CN207384282U - A kind of lumbar vertebrae side intervertenral space struts bone grafting and prepares integration tool - Google Patents

Abstract

The utility model relates to an integrated tool for lumbar lateral intervertebral space expansion and bone grafting preparation, which comprises a guide, a protective sleeve and a trephine; the guide is provided with a guide handle and a guide detachably connected with the guide handle. The connecting rod of the guide device, the guide block arranged on the connecting rod of the guide device and the support head connected to the lower end of the connecting rod of the guide device; the protective sleeve is provided with a baffle plate and an anchor nail; The lower edge of the working sleeve is serrated; the guide block described in the operation is sleeved in the working sleeve, and the working sleeve is sleeved in the protective sleeve. Applying the device of the utility model to decompress the lumbar vertebra has better fusion effect, easier operation, less trauma and less damage.

Description

An integrated tool for lumbar lateral intervertebral space distraction and bone graft preparation

technical field

The utility model relates to the technical field of medical instruments, in particular to an integrated tool for preparing bone grafting by distracting the lateral intervertebral space of the lumbar spine.

Background technique

Lumbar fusion is a basic technique for the treatment of lumbar disorders, applicable to: vertebral destructive diseases, such as spinal tuberculosis or spinal tumors, which cause damage to one or several vertebrae; loss of spinal stability, such as spinal injury, degeneration, vertebral Instability of the spine from destruction or surgery; displacement or slippage with pain and dysfunction; prevention or correction of deformity; cooperation with corrective surgery.

In lumbar fusion, the lumbar intervertebral joints are osseointegrated through anterior and posterior lumbar surgery in facet joints, intertransverse process bone grafts, and intervertebral bone grafts, thereby establishing and maintaining lumbar spine stability. Bone graft fusion plays a key role in the reconstruction of lumbar spine stability, and the success of fusion has also become one of the important indicators of the success of spinal surgery. After a lot of clinical verification, intervertebral fusion has become the gold standard of clinical lumbar fusion due to its advantages of large bone graft bed area, reliable bone graft, and high fusion rate.

The specific operation process of conventional lumbar posterior intervertebral fusion in clinic is: 1. Reach the lumbar bone through the posterior lumbar approach; 2. Reach the spinal canal by removing part of the facet joints, ligamentum flavum and other posterior lumbar attachment structures; 3. Separate the nerve root and dural sac, stop bleeding, and expose the posterior part of the intervertebral disc; 4. After cutting the annulus fibrosus of the intervertebral disc with a sharp knife, use the nucleus pulposus forceps, spreader, scraper, and reamer to process the intervertebral space in sequence until the upper and lower cartilage The endplate was removed to form a good bone graft bed; 5. An intervertebral fusion device was implanted into the intervertebral space; 6. The posterior structure of the lumbar spine was fixed with a screw-rod system. Although this traditional surgical method has good clinical effect, it has the following disadvantages: 1. The operation is cumbersome, and the intervertebral space is processed in turn with nucleus pulposus forceps, spreader, scraper, and reamer. This step usually requires 3-4 cycles; 2. It is difficult to handle the bone graft bed in young patients and patients with osteoporosis; 3. If the implanted intervertebral fusion device is too small, it will easily prolapse backwards; if it is too large, it will easily damage the nerve and cause postoperative axial pain; 4. The posterior approach For intervertebral fusion, it is necessary to remove part of the appendage bony structure, resulting in iatrogenic instability. It is necessary to cooperate with the posterior screw-rod system to increase stability, which increases the complexity, risk and cost of the operation to a certain extent. In recent years, intervertebral fusion techniques such as XLIF, DLIF, and OLIF use the lumbar lateral approach. The operation process is: the lateral incision passes through the retroperitoneal space, passes through the psoas muscle to the side of the intervertebral disc, and then intervertebral fusion with the lumbar posterior approach Steps 4 and 5 of the procedure are the same. Lateral interbody fusion achieves indirect decompression by opening the intervertebral space. Although it does not damage the posterior structure of the lumbar spine, it still has the problem of cumbersome operation and has unique complications of lumbar plexus injury. Therefore, there is an urgent need for a lumbar interbody fusion method and related instruments that can obtain good fusion effects and are easier to operate, but there are no relevant reports so far.

Contents of the invention

The purpose of the utility model is to provide a lumbar lateral intervertebral space distraction bone graft preparation integrated tool aiming at the deficiencies in the prior art.

In order to achieve the above object, the technical scheme that the utility model takes is:

An integrated tool for lumbar lateral intervertebral space distraction and bone graft preparation, including a guide, a protective sleeve and a trephine;

The guide is provided with a guide handle, a guide connecting rod, a guide block and a support head, the upper end of the guide link is detachably connected to the guide handle and the lower end of the guide link is connected to the support head, the The above-mentioned guide block is arranged on the guider connecting rod;

The protective sleeve is provided with a hollow cylindrical protective sleeve body, one end of the protective sleeve body is in the shape of a bevel and extends out to form a baffle, and the lower end of the baffle is provided with an anchor fixed nail;

The trephine is provided with a trephine handle and a working sleeve with a serrated lower edge, and the inside of the trephine is a cavity through which both ends are connected;

The guide block described in the operation is socketed in the working sleeve and tangent to the working sleeve, with a gap of 0.08-0.12mm; the working sleeve is socketed in the protective sleeve and tangent to the protective sleeve, The gap is 0.08-0.12mm.

The brace head is a cuboid, and the two larger side walls of the brace head gradually converge at the lower end so that the lower end surface is a narrower curved surface.

Anti-slip lines are provided on the surface of the two side walls with smaller areas at the support head.

The length of the opening is 24-30mm, the width is 7-13mm, and the thickness is 7-8mm.

The detachable connection specifically includes: the handle wall of the guide is provided with a first through hole; the connecting rod of the guide is provided with one end fixed on the inner wall of the connecting rod of the guide and a triangular slide fixed at the other end. The spring of the block, the slider protrudes from the outside of the guide link through the second through hole on the side wall of the guide link; when the guide link is sleeved in the handle of the guide, the The slider protrudes from the outside of the guide handle through the first through hole.

The edge length of the lower edge of the baffle plate is equal to a quarter of the circumference of the protective sleeve body.

The inner diameter of the working sleeve is 9-15mm.

The distance from the lower edge of the trephine handle to the lower edge of the trephine is equal to the distance from the upper edge of the guide block to the lower edge of the guide.

The utility model also provides a lumbar posterolateral minimally invasive decompression fusion system, including a guide, a protective sleeve, a trephine, a gripper and a fusion device;

The guide is provided with a guide handle, a guide connecting rod, a guide block and a support head, the upper end of the guide link is detachably connected to the guide handle and the lower end of the guide link is connected to the support head, the The above-mentioned guide block is arranged on the guider connecting rod;

The protective sleeve is provided with a hollow cylindrical protective sleeve body, one end of the protective sleeve body is in the shape of a bevel and extends out to form a baffle, and the lower end of the baffle is provided with an anchor fixed nail;

The trephine is provided with a trephine handle and a working sleeve with a serrated lower edge, and the inside of the trephine is a cavity through which both ends are connected;

The guide block described in the operation is socketed in the working sleeve and tangent to the working sleeve, with a gap of 0.08-0.12mm; the working sleeve is socketed in the protective sleeve and tangent to the protective sleeve, The gap is 0.08-0.12mm;

The gripper is provided with a gripper handle and a gripper connecting rod whose upper end is connected to the gripper handle, the upper end surface of the gripper handle is a plane, and the inside of the gripper connecting rod is provided with a drainage channel;

The fusion device is provided with a cylindrical fusion device body, the interior of the fusion device body is provided with a fastening channel through which two ends pass through, the fusion device body is also provided with one end opening on the upper end surface of the fusion device body, and the other One end is open to the nail channel on the side wall of the fuser body, and the nail channel is equipped with fixing nails;

The lower end of the gripper connecting rod described in the operation is firmly connected with the fastening channel of the fusion device.

The brace head is a cuboid, and the two larger side walls of the brace head gradually converge at the lower end so that the lower end surface is a narrower curved surface.

Anti-slip lines are provided on the surface of the two side walls with smaller areas at the support head.

The length of the opening is 24-30mm, the width is 7-13mm, and the thickness is 7-8mm.

The detachable connection specifically includes: the handle wall of the guide is provided with a first through hole; the connecting rod of the guide is provided with one end fixed on the inner wall of the connecting rod of the guide and a triangular slide fixed at the other end. The spring of the block, the slider protrudes from the outside of the guide link through the second through hole on the side wall of the guide link; when the guide link is sleeved in the handle of the guide, the The slider protrudes from the outside of the guide handle through the first through hole.

The edge length of the lower edge of the baffle plate is equal to a quarter of the circumference of the protective sleeve body.

The inner diameter of the working sleeve is 9-15mm.

The distance from the lower edge of the trephine handle to the lower edge of the trephine is equal to the distance from the upper edge of the guide block to the lower edge of the guide.

The nail path is arc-shaped.

The fastened connection is a threaded connection.

The utility model has the advantages that:

1. The lumbar lateral intervertebral space distraction and bone graft preparation integrated tool of the present utility model is invented based on a new surgical method, and the lumbar vertebral decompression is performed by using the lumbar lateral intervertebral space distraction bone graft preparation integrated tool, which has little damage to the lumbar structure , the risk of nerve injury and lumbar plexus injury is small, and a larger bone graft bed area can be obtained, the fusion effect is better, the operation is easier, and it has the advantages of minimally invasive and fast postoperative recovery.

2. The shape and structure of the stretching head of the guide are reasonably set, which can be easily inserted into the intervertebral space and fully stretched, and are not easy to damage other tissues; the stretching head of the guide improves the stability of stretching through anti-slip lines; the handle of the guide and The connection method of the guide rod is convenient for intraoperative assembly and disassembly.

3. The protective sleeve is put into the operation area along the guider to block the nerve and fixed on the vertebral body through the end metal anchor nail to ensure that the trephine does not damage the nerve tissue when it enters.

4. The trephine with cylindrical working sleeve is convenient for rapid tissue removal, and can obtain a larger bone grafting bed to improve the fusion effect.

5. The guide block of the guide can accurately guide the trephine approach, and the cooperation of the two can prompt the tissue resection status, avoid excessive resection, and have good safety.

6. The holder facilitates fast and accurate placement of the fusion device, and provides a drainage channel to ensure a clear surgical field.

7. The cylindrical fusion cage expands the fusion area, and the fixation effect can be enhanced by fixing nails. In addition, the fusion cage also provides a drainage path to ensure a clear surgical field.

Description of drawings

Figure 1 is a front view of the guide.

Figure 2 is a right side view of the guide.

Fig. 3 is a schematic diagram of the connection mode between the handle of the guide and the connecting rod of the guide.

Fig. 4 is a structural schematic diagram of the protective sleeve.

Fig. 5 is a front view of the trephine.

Fig. 6 is a schematic diagram of the cooperating use of the guide, the protective sleeve and the trephine during the operation.

Fig. 7 is a front view of the gripper.

Fig. 8 is a schematic structural view of the fusion device.

Fig. 9 is a schematic diagram of the cooperative use of the grasper and the fusion device during the operation.

Detailed ways

Based on rich clinical experience, the inventor of the present application invented a new type of lumbar vertebra decompression and fusion, and based on this, invented a new set of equipment, that is, the lumbar lateral intervertebral space distraction bone grafting preparation of the utility model Integration tools. The specific method of operation is as follows:

1. Reach the root of the transverse process through the Watkins muscle space approach at the lateral rear of the lumbar spine;

2. Remove the transverse process, strip the root of the transverse process to the ventral side, and subperiosteum at the head end to the side of the upper intervertebral space to expose the intervertebral foramen;

3. After cutting the fibrous annulus of the intervertebral disc with a sharp knife, use the nucleus pulposus forceps and a distractor to process the intervertebral space, insert the guide into the intervertebral space and rotate it 90 degrees to distract the space;

4. Put the protective sleeve along the guide, and rotate the protective sleeve so that the end baffle of the protective sleeve blocks the nerve. After confirming that the nerve tissue is blocked, tap the protective sleeve to fix the metal anchor nail at the end of the protective sleeve. On the vertebral body, ensure that the trephine does not damage the nerve tissue when entering;

5. Remove the handle of the guide, insert a trephine of appropriate size along the guide, and remove the intervertebral disc and part of the endplate. When the trephine enters a specific depth, install the handle of the guide, and rotate the trephine and guide at the same time to take out the resected tissue ;

6. Insert a cylindrical intervertebral fusion device of appropriate size through the gripper. Stop bleeding, place drainage, close the incision, and the operation is over.

Compared with the existing lumbar decompression and fusion, this operation has the following advantages:

1. It does not damage the posterior lumbar bone structure, but only destroys the unilateral transverse process, which has little effect on the stability of the lumbar spine;

2. The operation is more convenient, and there is no need to deal with the intervertebral space and bone graft bed multiple times;

3. The bone graft bed is larger, the blood supply of the bone graft bed is better, and the bone graft conditions are better;

4. There is no need to involve the nerve root, and the risk of nerve injury is small;

5. During the approach, subperiosteal dissection is used under direct vision, and the possibility of damaging the lumbar plexus is small;

6. Minimally invasive approach, fast postoperative recovery.

The lumbar lateral intervertebral space distraction bone graft preparation integrated tool for this operation utility model includes: 1. a guide, 2. a protective sleeve, and 3. a trephine. Other instruments used in the operation such as sharp knife, nucleus pulposus forceps, spreader etc. are conventional instruments in the prior art.

The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings. Herein, the "upper end" and "lower end" are named according to the perspectives in the drawings.

The reference signs and components involved in the accompanying drawings are as follows:

1. Guide, 11. Guide handle, 111. First through hole, 12. Guide link, 121. Spring, 122. Slider, 123. Second through hole, 13. Guide block, 14. Support head , 141. Anti-skid pattern

2. Protective sleeve, 21. Protective sleeve body, 22. Baffle plate, 23. Anchor nail

3. Trephine, 31. Trepan handle, 32. Working sleeve

4. Manipulator, 41. Manipulator handle, 42. Manipulator connecting rod, 421. External thread, 422. Drainage channel

5. fusion device, 51. fusion device body, 52. fastening channel, 53. nail channel, 54. fixing nail

Example 1

The utility model's integrated tool for preparing the intervertebral space at the side of the lumbar vertebrae includes a guide 1 , a protective sleeve 2 and a trephine 3 .

The posterolateral minimally invasive decompression and fusion system of the lumbar spine of the utility model comprises a guide 1 , a protective sleeve 2 , a trephine 3 , a gripper 4 and a fusion device 5 .

guide

Please refer to Figure 1, Figure 1 is a front view of the guide. The guide is provided with a guide handle 11 , a guide connecting rod 12 , a guide block 13 and a brace head 14 . The guide handle 11 is "T" shaped, and the guide link 12 is a round bar with an upper end connected to the guide handle 11 . The guide block 13 is a cylinder and is arranged on the guide link 12 with the guide link 12 as the central axis. The opening 14 is connected to the lower end of the guide connecting rod 12; the opening 14 is a cuboid as a whole.

Please refer to Figure 2, Figure 2 is the right side view of the guide. The two larger sidewalls of the propping head 14 gradually meet at the lower end so that the lower end surface is a narrower curved surface; the two smaller sidewalls of the propping head 14 are provided with anti-skid lines 141 .

Please refer to FIG. 3 , which is a schematic diagram of the connection mode of the handle of the guide and the connecting rod of the guide. The guide handle 11 and the guide link 12 are detachably connected. Specifically, the inside of the lower end of the guide handle 11 is a cavity, and the side wall is provided with a first through hole 111; the inside of the upper end of the guide rod 12 is also a cavity, and a spring is provided inside. 121, one end of the spring 121 is fixed on the inner wall of the guide link 12, and the other end is fixed with a triangular slider 122, and the slider 122 passes through the second through hole on the side wall of the guide link 12 123 protrudes from the outside of the guide link 12; in the assembled state, the upper end of the guide link 12 is sleeved in the cavity of the guide handle 11, and the slider 122 passes through the first through hole 111 The inside protrudes from the outside of the guide handle 11, so that the guide handle 11 and the guide connecting rod 12 are relatively fixed.

It should be noted that: the guide 1 is used to expand the intervertebral space and guide the approach of the trephine 3 to accurately resect relevant tissues. The length of the stretching head 14 is 24-30mm, the width is 7-13mm, and the thickness is 7-8mm. This size can be easily inserted into the intervertebral space and fully stretched without damaging the radially outer tissue of the intervertebral disc. The anti-slip lines 141 can increase the frictional force with the end plate to prevent slipping. The lower end surface of the brace head 14 is designed as a narrow curved surface, which is more convenient for the insertion of the guide 1 . The guide block 13 is not limited to a cylinder, but can also be a rib structure arranged radially around the guide connecting rod 12, which can also play a guiding role. However, the cylindrical shape has the best guiding effect, and its surface is smooth, so it is not easy to The patient causes damage, and at the same time, it is not easy to hide bacteria, and it is easy to clean and disinfect. The guide block 13 can be assembled on the guide link 12 as a separate component, or can be integrally formed with the guide link 12 . The connection method of the guide handle 11 and the guide connecting rod 12 is not limited to this embodiment, and can also be threaded connection, etc., but the structural design of this embodiment can be quickly assembled and disassembled, which is convenient for intraoperative use and saves surgery. time. The guide handle 11 is "T" shaped, which is convenient for the operator to hold.

protective sleeve

Please refer to FIG. 4 , which is a schematic structural diagram of the protective sleeve. The protective sleeve 2 is provided with a protective sleeve body 21, the protective sleeve body 21 is hollow cylindrical, one end of which is in the shape of an oblique mouth, and extends a section, which is a baffle plate 22. The edge length of the lower end edge of the baffle plate 22 is equal to a quarter of the circumference of the protective sleeve body 21, and three anchor nails 23 are also provided on the lower end edge of the baffle plate 22, and the axial direction of the anchor nails 23 is aligned with the protective sleeve. The axial direction of the barrel body 21 is parallel, and the diameter of the anchor nail 23 is 1mm, and the length is 2-3mm.

It should be noted that: the protective sleeve 2 is used for anchoring on the lateral side of the vertebral body after the nerve is opened, so as to keep the operation area relatively fixed and ensure that the trephine does not damage the nerve after entering. One end of the protective sleeve body 21 is obliquely shaped, and the edge length of the lower edge of the baffle plate 22 is equal to a quarter of the circumference of the protective sleeve body 21. This design is convenient for removing nerves during the operation and for the operator to observe . The number of the anchor nails 23 is not limited thereto, and the axial direction thereof is parallel to the axial direction of the protective sleeve 2, which can be anchored more stably.

Trephine

Please refer to Fig. 5, which is a front view of the trephine. The trephine 3 is provided with a trephine handle 31 and a working sleeve 32 . The inside of the trephine 3 is a cavity through which the upper and lower ends pass through. The inner diameter of the working sleeve 32 is 9-15mm, and the edge of the lower end of the working sleeve 32 is serrated.

It should be noted that: the trephine 3 is used to resect the intervertebral disc and part of the endplate. The edge of the lower end of the trephine 3 is serrated, which is convenient for quick removal. The internal diameter of the working sleeve 32 is 9-15 mm, which is set according to the distance of the normal intervertebral space of a person. This size can remove the intervertebral disc and part of the end plates on both sides, and the bone grafting bed area is relatively large. The inner diameter of the working sleeve 32 can be customized into different specifications according to actual needs.

Use with guide, protective sleeve and trephine

Please refer to FIG. 6 , which is a schematic diagram of the cooperating use of the guide, the protective sleeve and the trephine during the operation. The working sleeve 32 of the trephine 3 is sleeved in the protective sleeve 2 and is tangent to the protective sleeve 2 with a gap of 0.08-0.12 mm. The total length of the protective sleeve 2 is less than that of the trephine 3. The length of the working sleeve 32; the working sleeve 32 is sleeved on the outside of the guider connecting rod 12 and the guide block 13, and the distance from the lower edge of the trephine handle 31 to the lower edge of the trepan drill 3 is equal to the guide block 13 The distance from the upper edge to the lower edge of the guide 1, the guide block 13 is tangent to the working sleeve 32 of the trephine 3, and the gap is 0.08-0.12mm, so that the trephine 3 can be entered strictly along the path of the guide 1 way without drifting. In addition, the above-mentioned design is convenient for indicating the excision status of the trephine 3 to the operator, which can remind the operator that the resection is complete and avoid excessive resection.

During the operation, insert the guide 1 into the intervertebral space and rotate it 90 degrees to expand the space, then remove the handle 11 of the guide, put the protective sleeve 2 along the guide, and rotate the protective sleeve 2 to make the protective sleeve 2 The baffle plate 22 blocks the nerve, and after confirming that the nerve tissue is blocked, knock the protective sleeve 2 to fix the anchor nail 23 on the vertebral body, then insert the trephine 3 along the guide block 13, rotate and press the trephine handle 31 to use the serrated lower edge to resect the intervertebral disc and part of the endplate. When the lower edge of the trepan drill 3 is flush with the lower edge of the guide 1, the lower edge of the trepan drill handle 31 is flush with the upper edge of the guide block 13 Flat, indicating that the operator has completed the resection, and at this time continue to rotate the trephine handle 31, the trephine 3 will drive the guide 1 to rotate together, also prompting the operator to complete the resection, and then the guide handle 11 can be installed, and at the same time The resected tissue is taken out by rotating the trephine 3 and the guide 1 .

Controller

Please refer to Fig. 7, Fig. 7 is a front view of the gripper. The gripper 4 is provided with a gripper handle 41 and a gripper connecting rod 42 . The handle 41 of the gripper is "T" shaped, and the upper end surface is a plane. The upper end of the gripper connecting rod 42 is connected to the gripper handle 41, the outer wall of the lower end of the gripper connecting rod 42 is provided with an external thread 421, and the inside of the gripper connecting rod 42 is provided with a drainage channel 422. The lower end of the channel 422 is open to the lower end surface of the gripper link 42 , and the upper end is opened to the side wall of the gripper link 42 .

It should be noted that: the holder 4 is used to hold the fusion device 5 to fill the resected tissue, and at the same time, it is used to drain blood and other exudates to keep the surgical field clear. The drainage channel 422 is used to connect a drainage tube to drain exudates such as blood. The handle 41 of the gripper is in the shape of a "T", which is easy to hold, and its upper end surface is a plane, which can be knocked down with a hammer or other instruments to promote the insertion of the fusion device 5 .

fuser

Please refer to Fig. 8, which is a schematic structural diagram of the fusion device. The fusion device 5 is provided with a fusion device body 51. The fusion device body 51 is cylindrical and provided with a fastening channel 52 passing through the upper and lower end surfaces. The fastening channel 52 is provided with an internal thread. The cage body 51 is also provided with two nail channels 53 , the nail channels 53 are arc-shaped, one end is opened on the upper surface of the cage body 51 , and the other end is opened on the side wall of the cage body 51 . Fixing nail 54 is assembled in the nail track 53, under the unfixed state, the nail head of described fixing nail 54 protrudes outside the upper end opening of nail track 53, and the nail tail of described fixing nail 54 is positioned at the nail track 53. internal.

It should be noted that: the fusion device 3 is used to osseointegrate adjacent vertebral bodies. The fusion device body 1 can be made of polyether ether ketone, titanium alloy or artificial bone material. The said fastening channel 52 is used for assembling with the gripper 4, and facilitates the drainage of exudates such as blood. The fixing nail 54 is used to fix the fusion cage 3 and the vertebral body. The nail track 53 is arc-shaped, so that the fixing nail 54 can be nailed into the vertebral body more deeply, the fixation is more reliable, and a better fusion effect can be obtained.

The holder is used in conjunction with the fuser

Please refer to FIG. 9 , which is a schematic diagram of the use of the grasper and the fusion device during the operation. The gripper connecting rod 42 is sleeved in the fastening channel 52 and connected by thread fastening. But its specific connection method is not limited to this, and other fixing methods such as bayonet type are also available.

During the operation, connect the gripper connecting rod 42 of the gripper 4 into the fastening channel 52 of the fusion cage 5, then hold the gripper handle 41 to place the fusion cage 5 into the intervertebral space, and knock the gripper handle 41 with a nail hammer during the operation. The upper end surface of the upper end surface of the fixed nail 54 can be fastened into the vertebral body through the drainage channel 422, and the exuded blood is attracted to the outside of the surgical field. .

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the method of the present invention, some improvements and supplements can also be made, and these improvements and supplements should also be considered Be the protection scope of the present invention.

Claims (8)

1. a kind of lumbar vertebrae side intervertenral space strut bone grafting prepare integration tool, which is characterized in that including guider, protection sleeve and Trepan；

The guider is equipped with guide handle, guider connecting rod, guide pad and struts head, the guider connecting rod it is upper The connection of the lower end of end detachable connection guide handle and guider connecting rod struts head, and the guide pad connects arranged on guider On bar；

The protection sleeve is equipped with the protection sleeve body of hollow cylindrical, and described protection sleeve body wherein one end is in oblique Mouth shape simultaneously extends one section of formation baffle, its lower ora terminalis of the baffle is equipped with anchoring nail；

The work sleeve that the trepan is equipped with trepan handle and lower edge is serrated, the sky that trepan inside penetrates through for both ends Chamber；

Guide pad described in art is socketed in work sleeve and, gap 0.08-0.12mm tangent with work sleeve；Described Work sleeve is socketed in protection sleeve and tangent with protection sleeve, gap 0.08-0.12mm.

2. lumbar vertebrae side according to claim 1 intervertenral space, which struts bone grafting, prepares integration tool, which is characterized in that described Head is strutted as cuboid, the larger side wall of first two areas is strutted and is progressively crossed in lower end so that lower face is a relatively narrow song Face.

3. lumbar vertebrae side according to claim 2 intervertenral space, which struts bone grafting, prepares integration tool, which is characterized in that struts head Two smaller sidewall surfaces of area are equipped with anti-skid chequer.

4. lumbar vertebrae side according to claim 2 intervertenral space, which struts bone grafting, prepares integration tool, which is characterized in that described Length is strutted as 24-30mm, width 7-13mm, thickness 7-8mm.

5. lumbar vertebrae side according to claim 1 intervertenral space, which struts bone grafting, prepares integration tool, which is characterized in that described Detachable connection is specially：The guide handle wall is equipped with first through hole；The guider connecting rod is internally provided with Guider connecting rod inner wall is fixed in one end and the other end is fixed with the spring of trigonal slider, and the sliding block is through guider connecting rod The second through hole on side wall is stretched out in outside guider connecting rod；When the guider connecting rod is socketed in guide handle, institute The sliding block stated stretches out in the outside of guide handle through first through hole.

6. lumbar vertebrae side according to claim 1 intervertenral space, which struts bone grafting, prepares integration tool, which is characterized in that described The edge length of its lower ora terminalis of baffle is equal to a quarter perimeter of protection sleeve body.

7. lumbar vertebrae side according to claim 1 intervertenral space, which struts bone grafting, prepares integration tool, which is characterized in that described Work sleeve diameter is 9-15mm.

8. lumbar vertebrae side according to claim 1 intervertenral space, which struts bone grafting, prepares integration tool, which is characterized in that described The distance of the lower edge of trepan handle to trepan lower edge is equal to guide pad upper limb to the distance of guider lower edge.