CN212650879U - Minimally invasive percutaneous pedicle drilling and pressing bone grafting device - Google Patents

Abstract

The utility model discloses a minimally invasive percutaneous pedicle drilling and pressing bone grafting device; comprises a bone grafting funnel, a built-in pointed cone and a broken bone pressing device; the built-in pointed cone is directionally inserted into the bone grafting funnel, and the lower end of the built-in pointed cone extends out of the lower end of the bone grafting funnel; the bone grafting funnel comprises a hopper and a guide sleeve which is fixedly arranged at the lower end of the lower part of the hopper and forms a ring notch; the outer wall of the lower end of the guide sleeve is provided with a side opening communicated with the notch of the ring. Has the advantages that: during the operation, only need open a 5 mm's little wound through the skin, under the X-ray perspective, will plant bone funnel and built-in awl location through pedicle of vertebral arch puncture drilling, cut the bone grafting passageway to centrum fracture department, when rotating built-in awl and planting bone funnel, ring incision and side opening synergism, it is mellow and regular to make the bone grafting passageway, and the excavation speed accelerates, the adjustment side opening just needs the position of bone grafting to the internal most of vertebra, realize directional swift bone grafting, promote more effective healing of bone, this process is safe simple and convenient to be created a little, obviously alleviate patient's misery, reduce the operation cost, let the patient reach faster better clinical rehabilitation.

Description

Minimally invasive percutaneous pedicle drilling and pressing bone grafting device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a minimally invasive percutaneous pedicle drilling and pressing bone grafting device.

Background

Clinically, for thoracolumbar fracture, the most frequently used operation mode is incision reduction pedicle screw fixation, and with the high-speed development of minimally invasive concepts and operation skills, closed reduction percutaneous minimally invasive pedicle screw internal fixation which avoids operations such as large incision, stripping, traction of soft tissue blood circulation and vertebral plate exposure gradually becomes the main operation mode. However, if the bone injury is large or the bone is osteoporosis, no matter the incision reduction pedicle screw fixation or the closed reduction percutaneous minimally invasive pedicle screw internal fixation is easy to cause complications such as spinal bone disunion, spinal height loss, spinal kyphosis and the like, and the bone can be locally packed by pressing and implanting the bone through the pedicle, so that the bone mass in the fracture defect area is increased, the bone healing is promoted, and the occurrence of the adverse complications is reduced and avoided.

The normal incision skin is pressed through the pedicle of vertebral arch and the bone grafting operation has large wound, obvious damage of blood circulation of soft tissues, slow postoperative recovery and bone healing, and increased pain of patients and operation cost. At present, a minimally invasive percutaneous and pedicle-matched integrated positioning, drilling and bone grafting funnel is not found clinically.

Therefore, there is a need to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a minimally invasive percutaneous pedicle drilling and pressing bone grafting device.

The utility model provides a technical scheme that prior art problem adopted is: comprises a bone grafting funnel and a built-in pointed cone;

the built-in pointed cone can be lifted and is inserted into the bone grafting funnel in a non-rotatable manner; the lower end of the built-in pointed cone extends out of the lower end of the bone grafting funnel;

the bone grafting funnel comprises a funnel-shaped hopper and a guide sleeve, wherein the guide sleeve is downwards fixed at the lower end of the lower part of the hopper to form a ring notch; the guide sleeve and the hopper are integrally formed, and a side opening communicated with the notch of the lower end ring of the guide sleeve is formed in the outer wall of the lower end of the guide sleeve.

The above technical solution is further described as follows:

preferably, the built-in pointed cone comprises a clamping table A with an inverted cone-shaped structure, a guide rod A fixed downwards at the lower part of the clamping table A and a conical tip fixed downwards at the lower part of the guide rod A;

the clamping table A, the guide rod A and the conical tip are integrally formed; the external shape and size of the clamping table A are the same as the internal shape and size of the hopper, so that the hopper is clamped in an adaptive manner; the outer diameter of the guide rod A is slightly smaller than the inner diameter of the guide sleeve so as to be sleeved in the guide sleeve in a matching manner; the conical tip extends out of the annular notch at the lower part of the guide sleeve.

Preferably, a clamping protrusion is vertically arranged on the outer wall of the clamping table A; a clamping groove suitable for clamping and limiting the clamping protrusion is arranged on the inner wall of the hopper in an outward protruding mode, and the side opening is located right below the clamping groove;

when the clamping table A is arranged in the hopper and the clamping protrusion is limited and fixed in the clamping groove, the built-in pointed cone cannot rotate relative to the bone grafting hopper.

Preferably, the guide sleeve comprises a guide sleeve main body and a throat arranged at the lower part of the guide sleeve main body;

the outer laryngeal contraction wall is cut inwards from top to bottom, so that the lower periphery of the outer laryngeal contraction wall forms the ring cut, and the side opening is formed in the outer laryngeal contraction wall from top to bottom;

the length of the guide rod A is equal to that of the guide sleeve main body; the conical tip comprises an upper connecting part and a lower spike part which are integrally formed; the external shape and size of the upper connecting part are matched with the internal shape and size of the laryngeal constriction so as to enable the upper connecting part to be clamped in the laryngeal constriction; the lower spine portion is exposed out of the throat portion, and a plurality of working teeth are annularly arranged on the outer wall of the lower spine portion.

Preferably, the outer wall of the lower spine part is provided with external threads, the external threads are uniformly cut into multiple sections so as to correspondingly form a plurality of working teeth, and the correspondingly formed working teeth are distributed in a staggered manner from top to bottom.

Preferably, the built-in pointed cone further comprises a top platform A which is formed into a cylindrical structure;

the top platform A is vertically fixed on the upper portion of the clamping platform A and integrally formed with the clamping platform A, anti-skid grains A are arranged on the outer wall of the top platform A, and the top surface of the top platform A protrudes upwards to form a smooth protruding portion A suitable for abutting against the palm of a hand.

Preferably, the bone crushing and pressing device is further included;

the broken bone pressing device can be lifted and can be rotatably inserted into the bone grafting funnel.

Preferably, the broken bone pressing device comprises a clamping table B with an inverted cone-shaped structure and a guide rod B fixed downwards at the lower part of the clamping table B;

the clamping table B and the guide rod B are integrally formed; the outer shape and the size of the clamping table B are the same as those of the inner shape and the size of the hopper so as to be matched with and clamped in the hopper; the length of the guide rod B is equal to that of the guide sleeve main body, and the outer diameter of the guide rod B is slightly smaller than the inner diameter of the guide sleeve main body so as to be sleeved in the guide sleeve main body in a matching mode.

Preferably, the broken bone beater further comprises a top platform B which is formed into a cylindrical structure;

the top platform B is vertically fixed on the upper part of the clamping platform B and integrally formed with the clamping platform B, anti-skid grains B are arranged on the outer wall of the top platform B, and the top surface of the top platform B protrudes upwards to form a smooth protruding part B which is suitable for being abutted to the palm of a hand.

The utility model has the advantages that:

the utility model provides a bone grafting device is suppressed in drilling of wicresoft's percutaneous pedicle of vertebral arch drilling, when concrete implementation, will the bone grafting funnel carries out structural improvement, and with the supporting integration of built-in awl, can direct percutaneous pedicle of vertebral arch drilling bone grafting, so that replace traditional open operation the bone grafting through pedicle of vertebral arch drilling, on the one hand, during operation, only need open a 5 mm's little wound through the skin, under X line perspective, with supporting integrated bone grafting funnel and built-in awl fix through the pedicle of vertebral arch puncture drilling by the wicresoft mouth location, cut out the bone grafting passageway to centrum fracture department, this process wicresoft's percutaneous operation, the wicresoft theory is totally unanimous with percutaneous pedicle of vertebral arch nail is fixed, avoided cutting and peeled off operations such as soft tissue blood transportation and tractive show, can obviously alleviate patient's misery, reduce the operation wound and reduce the operation cost, reach faster better recovery simultaneously, on the other hand, in the bone grafting funnel with an improved structure, because the lower end of the guide sleeve is formed into a ring notch and the side opening is arranged, when the built-in pointed cone and the bone grafting funnel are rotated to cut a bone grafting channel, the ring notch and the side opening cooperate with each other, so that the cutting speed of the bone grafting channel can be greatly accelerated, the cut bone grafting channel is round and regular, and the corresponding built-in pointed cone is taken out subsequently, the bone grafting funnel is kept in the corresponding cut bone grafting channel, a crushing bone arranged in the corresponding bone grafting funnel is pressed to a centrum bone defect area by using a pressing device, in the process, because the clamping groove on the hopper of the bone grafting funnel is positioned right above the side opening, and the part of the throat inner wall of the lower part of the guide sleeve, which is right opposite to the side opening, is bent inwards and downwards, a certain crushing bone implantation guiding effect can be played, therefore, during actual operation, the clamping groove position can be adjusted, the side opening is opposite to the position which is most needed to be implanted with bone in the vertebral body, the crushed bone which is pressed is guided by the laryngeal contraction inner wall of the lower part of the guide sleeve opposite to the position of the side opening, the bone can be quickly and conveniently implanted through the side opening and the tail end opening, and the bone implantation effect is better.

Drawings

FIG. 1 is an exploded view of the minimally invasive percutaneous pedicle drilling and impacting bone grafting device of the present invention;

fig. 2 is a schematic view of the overall structure of the bone grafting funnel inserted with the built-in awl when the present invention is implemented;

FIG. 3 is an enlarged partial cross-sectional view of the lower end of the built-in awl of FIG. 2 after the built-in awl is inserted into the bone grafting funnel;

fig. 4 is a schematic view of the overall structure of the bone crushing presser inserted into the bone grafting funnel in the embodiment of the present invention;

FIG. 5 is an enlarged partial cross-sectional view of the entire lower end of the crushed bone punch of FIG. 4 after being inserted into the bone grafting funnel;

FIG. 6 is an enlarged view of the cone tip in this embodiment;

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Reference numerals:

minimally invasive percutaneous pedicle drilling and pressing bone grafting instrument 1000;

a bone grafting funnel 10;

a hopper 101; a card slot 1011; a guide sleeve 102; a guide sleeve body 102A; a laryngeal constriction 102B; a ring cut 1021; side openings 1022;

a built-in pointed cone 20;

a chuck A201; a snap 2011; a guide bar A202; a cone tip 203; an upper connection portion 203A; a lower spike 203B; a working tooth 2031; a top stage A204; anti-skid lines A2041; a smooth protrusion a 2042;

a broken bone punch 30;

a chuck B301; a guide bar B302; a top stage B303; anti-skid lines B3031; rounded protrusion B3032.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, so as to more clearly and intuitively understand the essence of the present invention.

As shown in connection with fig. 1-6;

the utility model provides a minimally invasive percutaneous pedicle drilling and pressing bone grafting device 1000, which comprises a bone grafting funnel 10 and a built-in pointed cone 20;

the built-in pointed cone 20 can be lifted and is inserted into the bone grafting funnel 10 in a non-rotatable manner; the lower end of the built-in pointed cone 20 extends out of the lower end of the bone grafting funnel 10;

the bone grafting funnel 10 comprises a funnel-shaped hopper 101 and a guide sleeve 102 which is downwards fixed at the lower end of the lower part of the hopper 101 to form a circular cut 1021; the guide sleeve 102 and the hopper 101 are integrally formed, and the outer wall of the lower end of the guide sleeve 102 is provided with a side opening 1022 communicated with a lower end ring cut 1021 of the guide sleeve.

In addition, in the present embodiment, the built-in pointed cone 20 includes a clamping platform a201 with an inverted cone-shaped structure, a guide rod a202 fixed downward at the lower part of the clamping platform a201, and a pointed cone 203 fixed downward at the lower part of the guide rod a 202;

the clamping table A201, the guide rod A202 and the conical tip 203 are integrally formed; the external shape and size of the clamping table A201 are the same as the internal shape and size of the hopper 101, so that the adapter is clamped in the hopper 101; the outer diameter of the guide rod A202 is slightly smaller than the inner diameter of the guide sleeve 102 so as to be matched and sleeved in the guide sleeve; the conical tip 203 protrudes out of the lower ring cut 1021 of the guide sleeve 102.

In the technical scheme, a clamping protrusion 2011 is vertically arranged on the outer wall of the clamping table A201; a clamping groove 1011 which is suitable for clamping and limiting the clamping protrusion 2011 is outwards and convexly arranged on the inner wall of the hopper 101, and the side opening 1022 is positioned right below the clamping groove 1011;

when the clamping platform A201 is placed in the hopper 101, and the clamping protrusion 2011 is limited and fixed in the clamping groove 1011, the built-in pointed cone 20 cannot rotate relative to the bone grafting funnel 10.

The clamping groove 1011 can play a certain guiding role so as to guide the clamping platform A201 to slide into the clamping platform A from top to bottom, so that the built-in pointed cone 20 is inserted into the bone grafting funnel 10 to have good inosculation and can not rotate when being inserted into the bone grafting funnel.

Meanwhile, in the present technical solution, the guide sleeve 102 includes a guide sleeve main body 102A and a throat 102B disposed at a lower portion of the guide sleeve main body 102A;

the outer wall of the throat 102B is cut inwards from top to bottom, so that the ring cut 1021 is formed at the lower periphery of the outer wall, and the side opening 1022 is formed in the outer wall of the throat 102B from top to bottom;

the guide rod a202 has a length equal to the guide sleeve body 102A; the conical tip 203 comprises an upper connecting part 203A and a lower spike part 203B which are integrally formed; the external shape and size of the upper connecting part 203A are matched with the internal shape and size of the throat 102B, so that the upper connecting part is clamped in the throat 102B; the lower spike 203B is exposed to the throat 102B, and a plurality of working teeth 2031 are annularly arranged on the outer wall of the lower spike 203B.

Based on the above, it can be clearly understood that, when the minimally invasive percutaneous pedicle drilling and pressing bone grafting device is specifically implemented, the minimally invasive percutaneous pedicle drilling and pressing bone grafting device is mainly used as the minimally invasive percutaneous pedicle drilling and pressing bone grafting device 1000, the bone grafting funnel 10 is structurally improved and is integrated with the built-in pointed cone 20 in a matching manner, and the minimally invasive percutaneous pedicle drilling and bone grafting can be directly performed, so that the traditional open-operation transpedicular drilling and bone grafting can be replaced.

On one hand, during specific operation, only a micro wound of 5mm needs to be cut through the skin, under X-ray perspective, the bone grafting funnel 10 and the built-in pointed cone 20 which are matched and integrated are positioned through a micro wound and punctured and drilled through the vertebral pedicle, a bone grafting channel is dug to the vertebral fracture part, in the process, minimally invasive percutaneous operation is performed, the minimally invasive idea is completely consistent with percutaneous vertebral pedicle nail fixation, the operations of cutting and stripping soft tissue blood transportation, pulling and exposing vertebral plates and the like are avoided, the pain of a patient can be obviously relieved, the operation wound is reduced, the operation cost is reduced, and meanwhile, faster and better recovery is achieved.

On the other hand, in the bone grafting funnel 10 with the improved structure, since the lower end of the guide sleeve 102 is formed as the annular notch 1021 and the side opening 1022 is provided, when the built-in awl 20 and the bone grafting funnel 10 are rotated to cut the bone grafting passage, the annular notch 1021 and the side opening 1022 cooperate with each other, so that the cutting speed of the bone grafting passage can be greatly increased, and the cut bone grafting passage is rounded and regular.

And then the corresponding built-in awl 20 is taken out, the bone grafting funnel 10 is left in the corresponding cut bone grafting channel, and the crushed bone arranged in the corresponding bone grafting funnel 10 is pressed to the bone defect area of the vertebral body by using a pressing device, in the process, as the clamping groove 1011 on the hopper 101 of the bone grafting funnel 10 is positioned right above the side opening 1022, and the part of the inner wall of the laryngeal constriction 102B at the lower part of the guide sleeve 102, which is opposite to the side opening 1022, is bent inwards and downwards, a certain bone crushing implantation guiding effect can be achieved, during the actual operation, the position of the clamping groove 1011 can be adjusted, so that the side opening 1022 is opposite to the part, which is most needed to be implanted with bone, of the vertebral body, and the pressed crushed bone can be quickly led out through the side opening 1022 and the end opening under the guiding of the part, which is opposite to the side opening 1022, of the inner wall of the laryngeal constriction 102B at the lower part of the guide, so that the bone grafting effect is better.

Therefore, the clinical practicality of the application is strong, the clinical bone grafting curative effect is good, and the operation is minimally invasive and simple, so that the application is suitable for popularization.

Obviously, in the present technical solution, the contour of the bone grafting funnel 10 is similar to that of the built-in awl 20, and the built-in awl 20 is just inserted into the bone grafting funnel 10, so that the outer wall of the built-in awl is tightly attached to the inner wall of the bone grafting funnel 10, and the built-in awl and the inner wall of the bone grafting funnel 10 cannot rotate during subsequent operations, so that the operations are stable.

Meanwhile, when the built-in pointed cone 20 is rotated, the plurality of working teeth 2031 annularly arranged on the outer wall of the lower pointed spine part 203B of the conical point 203 also rotate, so that the cutting of bone at the pedicle screw of the patient is facilitated, and a bone grafting channel can be quickly and effectively constructed.

Preferably, when the operation is performed, the outer wall of the lower spike 203B is provided with an external thread, the external thread is uniformly cut into a plurality of sections to form a plurality of corresponding working teeth 2031, and the plurality of corresponding working teeth 2031 are distributed in a staggered manner from top to bottom.

Therefore, when the built-in awl 20 is rotated, the plurality of working teeth 2031 facilitate rapid drilling to construct a bone grafting channel, and the plurality of correspondingly formed working teeth 2031 are distributed in a staggered manner from top to bottom, so that gaps between the plurality of working teeth 2031 are also distributed in a staggered manner from top to bottom, a certain space can be reserved to guide drilled bone upwards, and the built-in awl 20 has an excellent use effect.

Furthermore, in the present application, the built-in pointed cone 20 further includes a top platform a204 formed into a cylindrical structure;

the top platform A204 is vertically fixed on the upper portion of the clamping platform A201 and integrally formed with the clamping platform A201, anti-skid grains A2041 are arranged on the outer wall of the top platform A204, and the top surface of the top platform A204 protrudes upwards to form a smooth protruding portion A2042 suitable for abutting against the palm of a hand.

Therefore, the top platform a204 is provided for convenient hand holding, and the smooth protrusion a2042 formed by the upward protrusion of the top surface of the top platform a204 is suitable for abutting against the palm of the hand of the medical staff, so that the hand holding is compact and convenient for operation and force application.

In addition, when the bone crushing and pressing device is implemented, the bone crushing and pressing device 30 is further included; the crushed bone pressing device 30 can be held by hand and can be rotatably inserted into the bone grafting funnel 10.

Preferably, in this embodiment, the bone crushing squeezer 30 includes a clamping table B301 with an inverted cone-shaped structure and a guide rod B302 fixed downward at a lower portion of the clamping table B301;

the clamping table B301 and the guide rod B302 are integrally formed; the outer shape and the size of the clamping table B301 are the same as those of the inner shape and the size of the hopper 101 so as to be matched with the hopper 101 in a clamping manner; the length of the guide rod B302 is equal to the length of the guide sleeve main body 102A, and the outer diameter of the guide rod B302 is slightly smaller than the inner diameter of the guide sleeve main body 102A so as to be fittingly sleeved therein.

The broken bone pressing device 30 further includes a top platform B303 formed into a cylindrical structure;

the top platform B303 is vertically fixed on the upper part of the clamping platform B301 and is integrally formed with the clamping platform B301, anti-skid lines B3031 are arranged on the outer wall of the top platform B303, and a smooth protruding part B3032 suitable for being propped against the palm of a hand is formed by upward protruding of the top surface of the top platform B303.

From the above, it can be summarized that:

on the one hand, the outer wall of the clamping platform B301 of the broken bone pressing device 30 is not provided with the clamping protrusion 2011 matched with the clamping groove 1011 on the hopper 101 of the corresponding bone grafting funnel 10, so that the broken bone pressing device is rotatable relative to the hopper 101 of the bone grafting funnel 10, and the guide rod B302 of the broken bone pressing device 30 is also rotatable, so that as a whole, the broken bone pressing device 30 is rotatably inserted into the bone grafting funnel 10, so that the broken bone can be more effectively pressed to the bone grafting area through downward rotation.

On the other hand, the top platform B303 is also provided for easy holding, and the smooth protrusion B3032 formed by the upward protrusion of the top surface of the top platform B303 is suitable for abutting against the palm of the hand of the medical staff, so that the hand can be held compactly for easy operation and force.

Obviously, in the present technical solution, the broken bone pressing device 30 has a similar outline to the bone grafting funnel 10, and the broken bone pressing device 30 is just inserted into the bone grafting funnel 10, so that the outer wall of the broken bone pressing device is tightly attached to the inner wall of the bone grafting funnel 10, and the broken bone entering the guide sleeve 102 is not easy to flow out during the subsequent operation.

Furthermore, from the above, it can be understood that, in actual operation, the position of the locking groove 1011 can be adjusted to make the side opening 1022 on the guide sleeve 102 align with the position of the vertebral body to be implanted with bone, the bone crushing presser 30 is inserted downwards into the bone implantation funnel 10, the crushed bone is crushed by rotation, and the crushed bone can be guided out through the side opening 1022 and filled to the position of the vertebral body to be implanted with bone under the guidance of the inner wall of the laryngeal constriction 102B at the lower part of the guide sleeve 102 facing the side opening 1022, so that the bone implantation can be perfectly achieved.

It is further added that, in the specific implementation, the bone grafting funnel 10, the built-in pointed cone 20 and the broken bone pressing device 30 are all made of stainless steel or titanium alloy material, so that the bone grafting funnel has the advantages of hard texture, long service life and cleaning, disinfection and reuse.

Other embodiments, etc., will not be described herein.

To sum up, the utility model has the advantages that the whole structure is simple, the wicresoft is easy to implement, easy operation, and the practicality is strong, and the specificity is strong, and low in manufacturing cost all need not increase too many cost in the improvement of structure and technique, makes the utility model discloses must have fine market spreading value, the utility model discloses can welcome very, can effectively popularize.

The above only is the preferred embodiment of the present invention, not limiting the patent protection scope of the present invention, all the changes of the equivalent structure or equivalent flow made by the contents of the specification and the drawings of the present invention or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (9)

1. The minimally invasive percutaneous pedicle drilling and pressing bone grafting device is characterized in that: comprises a bone grafting funnel and a built-in pointed cone;

the built-in pointed cone can be lifted and is inserted into the bone grafting funnel in a non-rotatable manner; the lower end of the built-in pointed cone extends out of the lower end of the bone grafting funnel;

the bone grafting funnel comprises a funnel-shaped hopper and a guide sleeve, wherein the guide sleeve is downwards fixed at the lower end of the lower part of the hopper to form a ring notch; the guide sleeve and the hopper are integrally formed, and a side opening communicated with the notch of the lower end ring of the guide sleeve is formed in the outer wall of the lower end of the guide sleeve.

2. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 1, wherein: the built-in pointed cone comprises a clamping platform A with an inverted cone-shaped structure, a guide rod A fixed at the lower part of the clamping platform A downwards and a conical tip fixed at the lower part of the guide rod A downwards;

the clamping table A, the guide rod A and the conical tip are integrally formed; the external shape and size of the clamping table A are the same as the internal shape and size of the hopper, so that the hopper is clamped in an adaptive manner; the outer diameter of the guide rod A is slightly smaller than the inner diameter of the guide sleeve so as to be sleeved in the guide sleeve in a matching manner; the conical tip extends out of the annular notch at the lower part of the guide sleeve.

3. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 2, wherein: a clamping protrusion is vertically arranged on the outer wall of the clamping table A; a clamping groove suitable for clamping and limiting the clamping protrusion is arranged on the inner wall of the hopper in an outward protruding mode, and the side opening is located right below the clamping groove;

when the clamping table A is arranged in the hopper and the clamping protrusion is limited and fixed in the clamping groove, the built-in pointed cone cannot rotate relative to the bone grafting hopper.

4. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 3, wherein: the guide sleeve comprises a guide sleeve main body and a throat arranged at the lower part of the guide sleeve main body;

the outer laryngeal contraction wall is cut inwards from top to bottom, so that the lower periphery of the outer laryngeal contraction wall forms the ring cut, and the side opening is formed in the outer laryngeal contraction wall from top to bottom;

the length of the guide rod A is equal to that of the guide sleeve main body; the conical tip comprises an upper connecting part and a lower spike part which are integrally formed; the external shape and size of the upper connecting part are matched with the internal shape and size of the laryngeal constriction so as to enable the upper connecting part to be clamped in the laryngeal constriction; the lower spine portion is exposed out of the throat portion, and a plurality of working teeth are annularly arranged on the outer wall of the lower spine portion.

5. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 4, wherein: the outer wall of the lower spine part is provided with external threads, the external threads are uniformly cut into multiple sections so as to correspondingly form a plurality of working teeth, and the working teeth correspondingly formed are distributed in a staggered manner from top to bottom.

6. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 2, wherein: the built-in pointed cone also comprises a top platform A which is formed into a cylindrical structure;

the top platform A is vertically fixed on the upper portion of the clamping platform A and integrally formed with the clamping platform A, anti-skid grains A are arranged on the outer wall of the top platform A, and the top surface of the top platform A protrudes upwards to form a smooth protruding portion A suitable for abutting against the palm of a hand.

7. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 4, wherein: also comprises a broken bone pressing device;

the broken bone pressing device can be lifted and can be rotatably inserted into the bone grafting funnel.

8. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 7, wherein: the broken bone pressing device comprises a clamping table B with an inverted cone-shaped structure and a guide rod B which is downwards fixed at the lower part of the clamping table B;

the clamping table B and the guide rod B are integrally formed; the outer shape and the size of the clamping table B are the same as those of the inner shape and the size of the hopper so as to be matched with and clamped in the hopper; the length of the guide rod B is equal to that of the guide sleeve main body, and the outer diameter of the guide rod B is slightly smaller than the inner diameter of the guide sleeve main body so as to be sleeved in the guide sleeve main body in a matching mode.

9. The minimally invasive percutaneous pedicle hole drilling and pressing bone grafting device according to claim 8, wherein: the broken bone pressing device also comprises a top platform B which is formed into a cylindrical structure;

the top platform B is vertically fixed on the upper part of the clamping platform B and integrally formed with the clamping platform B, anti-skid grains B are arranged on the outer wall of the top platform B, and the top surface of the top platform B protrudes upwards to form a smooth protruding part B which is suitable for being abutted to the palm of a hand.

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