CN113520513B

CN113520513B - Bone-taking and pressure-reducing bone grafting device capable of protecting hip through percutaneous minimally invasive precise positioning

Info

Publication number: CN113520513B
Application number: CN202110665745.XA
Authority: CN
Inventors: 袁代柱; 吴展羽; 杨龙; 叶川; 吴信
Original assignee: Individual
Current assignee: Zhejiang Baierke Biotechnology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2023-02-28
Anticipated expiration: 2041-06-16
Also published as: CN113520513A

Abstract

The invention discloses a hip-protecting percutaneous minimally invasive accurate positioning bone-taking and pressure-reducing bone grafting device, relates to the technical field of medical instruments, and can accurately regulate and control the angle of each patient according to the parameters of the anteversion angle and the cervical shaft angle of each patient, realize accurate positioning of a femoral head necrosis area, and accurately assist a medullary core drilling hole to fully reduce the pressure of the necrosis area. And the effects of reusing the drilled tunnel bone, completely delivering the graft, shortening the operation time and reducing the operation wound under percutaneous, closed and minimally invasive operations can be achieved. A kind of hip-protecting percutaneous minimally invasive accurate positioning bone-taking decompression bone grafting device includes: positioning guide component and bone taking and grafting component. The positioning needle passes through the positioning guide component and is inserted into the bone. The positioning guide component is used for adjusting the angle and the position of the positioning needle. The bone taking and grafting component can be sleeved on the positioning needle. The bone grafting component is used for taking out femoral head necrosis focus and healthy sclerotin in the head and neck and implanting filling material.

Description

Bone-taking and pressure-reducing bone grafting device with functions of protecting hip and minimally invasive percutaneous and accurate positioning

Technical Field

The invention relates to the technical field of medical instruments, in particular to a hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device.

Background

The femoral head necrosis is a common clinical refractory disease, and if the femoral head necrosis is treated improperly, the femoral head collapse and hip joint function damage can be caused, so that the hip protection treatment before the femoral head collapse (early femoral head necrosis) has important significance. At present, a femoral head core drilling decompression method is mainly used, high pressure in the femoral head can be reduced through drilling, venous reflux is improved, a channel penetrates through a sclerosing zone, and a channel is opened for the growth of new vessels in the postoperative femoral head. Meanwhile, artificial bone, allogeneic bone, autologous bone, mesenchymal stem cells and biological materials can be implanted into the necrotic area in the femoral head through the decompression channel, so that the creeping replacement and tissue repair of the dead bone are promoted.

However, the current core drilling decompression hip protection surgery has the following defects:

the necrotic area is difficult to locate due to the operation of an operator by subjective experience, the operator needs to perform C-arm fluoroscopy for many times in the operation, the location angles (the anteversion angle and the cervical shaft angle) are adjusted, and the operation wound is large. The X-ray repeated fluoroscopy, groping and positioning can prolong the operation time while increasing the radiation quantity. And the marrow core drilling process causes complete damage and waste of healthy bone in the femoral head and neck. After the medullary core is drilled, the necrotic area in the femoral head needs to be enlarged, drilled and decompressed, and the effective enlarging and decompressing operation is difficult to perform due to the limited diameter of a drilling channel; the marrow core is drilled, and after pressure reduction, bone grafting or related grafting materials in the necrotic area need to be carried out through a drilling channel. The defects can cause long operation and anesthesia time, large operation wound, difficult implantation or delivery of the implant, low experience of doctors, high medical cost and poor clinical effect, and are not beneficial to the clinical popularization of the operation.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art, and provides a hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device which can realize the following functions under percutaneous, closed and minimally invasive operations: 1. the angle of the femoral head necrosis focus can be accurately regulated and controlled according to specific parameters of an anteversion angle and a cervical shaft angle of each patient, so that accurate positioning of the femoral head necrosis focus is realized, and full decompression of a necrotic area by core drilling is accurately assisted; 2. in the process of drilling and decompressing the medullary core, the damage and the waste of the healthy bone inside the head and neck of the femur are avoided, the taken out healthy bone mixed filling material can be filled into the focus again, and the reutilization of the autogenous bone is realized; 3. under a narrow space in the pressure reduction pore channel, the reaming and pressure reduction of the necrotic focus area are realized; 4. realizes complete delivery of the graft and avoids difficult delivery and waste. The defects of long operation and anesthesia time, large operation wound, difficult implantation or delivery of the implant, low experience of doctors, high medical cost, poor clinical effect and the like are avoided.

According to a first aspect of the invention, a hip-protecting percutaneous minimally-invasive accurate-positioning bone-taking and pressure-reducing bone grafting device is provided, which comprises a positioning guide member, a positioning needle passes through the positioning guide member and is inserted into a bone, and the positioning guide member is used for adjusting the angle and the position of the positioning needle; and the bone taking and grafting component can be sleeved on the positioning needle and is used for taking out the femoral head necrosis focus and the healthy bone in the head and neck and implanting filling materials.

Has the advantages that: a device for protecting hip, taking bone, decompressing and implanting bone through percutaneous minimally invasive precise positioning comprises a positioning guide component and a bone taking and implanting component. The positioning guide component can accurately regulate and control the drilling angle of each patient according to the parameters of the anteversion angle and the shaft angle of each patient, so that the femoral head necrosis area is accurately positioned, and the marrow core drilling is accurately assisted to fully reduce the pressure of the necrosis area. The bone taking and grafting component can reuse the drilled hole bone under percutaneous, closed and minimally invasive operations, and achieves the effects of complete delivery of the graft, shortened operation time, reduced operation trauma and the like. The front end of the positioning guide component is designed to be blunt, soft tissue interference can be avoided through the blunt design, the operation process is optimized, and operation trauma is reduced. Thereby achieving the goal of minimally invasive surgery. The hip-protecting percutaneous minimally invasive accurate positioning bone-taking and pressure-reducing bone grafting device can realize rapid positioning, rapid bone-taking and rapid delivery of filling materials, greatly improves the speed of the operation, reduces the cost of the operation, and is beneficial to popularization of the operation.

According to the invention, the hip-protecting percutaneous minimally invasive accurate positioning bone-taking and pressure-reducing bone grafting device comprises a positioning guide member and a positioning guide component, wherein the positioning guide member comprises: the corner piece is penetrated by the positioning needle and inserted into a bone, and the corner piece is used for adjusting the angle of the positioning needle; and the positioning needle penetrates through the translation piece and is inserted into the bone, and the translation piece is used for adjusting the position of the positioning needle.

The invention discloses a hip-protecting percutaneous minimally-invasive accurate-positioning bone-taking and pressure-reducing bone grafting device, which is characterized in that a corner piece comprises: a first substrate; the first basal body is provided with a first base, the positioning pin penetrates through the first base and is inserted into a bone, the first base is fixed by the first base, two ends of the first base are respectively a first insertion end and a first insertion end, the first base comprises a plurality of first channels, and the first channels share the same first insertion end; the adjusting channel is arranged on the first base body, the positioning needle penetrates through the adjusting channel and is inserted into bone, the adjusting inserting end and the adjusting inserting end are respectively arranged at two ends of the adjusting channel, the number of the adjusting channels is multiple, and the adjusting channels share the same adjusting inserting end.

According to the invention, the hip-protecting percutaneous minimally invasive precise positioning bone-taking pressure-reducing bone grafting device comprises a translation part and a support part, wherein the translation part comprises: a second substrate; and the positioning through holes are formed in the second base body, the positioning needles penetrate through the positioning through holes and are inserted into bone, and the plurality of positioning through holes are formed.

According to the minimally invasive, percutaneous, accurate-positioning, bone-taking, pressure-reducing and bone-grafting device for hip protection, one end of the second base body is an arc end, and soft tissue interference can be avoided due to the arc end.

According to the invention, the hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device comprises: the positioning sleeve can be sleeved on the positioning needle; the bone taking kit can be sleeved on the positioning sleeve and is used for taking out necrotic lesions and healthy bone in the head and neck; and the bone grafting kit is connected with the bone taking kit and is used for implanting filling materials.

According to the hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device, the inner diameter of the positioning sleeve is equal to the diameter of the positioning needle.

According to the invention, the hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device comprises: the handle is used for holding and provided with a first through hole; the bone saw is detachably arranged on the handle, a second through hole is formed in the bone saw, and the second through hole is communicated with the first through hole; the bone taking part can penetrate through the handle and the bone saw and is screwed into the bone, one end of the bone taking part is a threaded end, the other end of the bone taking part is a handle end, and the threaded end can be drilled into the bone; and the depth limiting device is sleeved on the bone saw and used for limiting the bone taking depth of the bone saw.

According to the invention, the hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device comprises: the bone grafting inlet piece is detachably arranged on the handle and communicated with the first through hole; and the ejector rod can be inserted into the first through hole and the second through hole and is used for abutting against the filling material to a femoral head necrosis focus.

According to the hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device, the bone-taking and bone-grafting component further comprises a reaming and pressure-reducing component, and the reaming and pressure-reducing component comprises: the pressure reducing hole expanding rod can be inserted into a bone channel formed in the bone taking kit; the pressure reduction guide hole is formed in the pressure reduction reaming rod and comprises a first pore passage and a second pore passage, the first pore passage is communicated with the second pore passage, the joint of the first pore passage and the second pore passage is in smooth transition, the first pore passage and the second pore passage form a certain angle, and the included angle between the axes of the first pore passage and the second pore passage is 0-30 degrees; and the decompression reaming needle is inserted from one end of the decompression guide hole and penetrates out from the other end of the decompression guide hole, and the decompression reaming needle can extend out of the decompression guide hole after being bent at a certain angle along the decompression guide hole to perform reaming decompression.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of an angle fine-tuning device according to a preferred embodiment of the present invention;

FIG. 3 is a left side view of the fine angle adjustment device according to the preferred embodiment of the present invention;

FIG. 4 is a right side view of the fine angle adjustment device according to the preferred embodiment of the present invention;

FIG. 5 isbase:Sub>A cross-sectional view of section A-A of FIG. 4;

FIG. 6 is a schematic diagram of a distance fine-tuning assembly according to a preferred embodiment of the present invention;

FIG. 7 is a cross-sectional view of a distance adjustment assembly in accordance with a preferred embodiment of the present invention;

FIG. 8 is a first schematic structural view of a positioning guide member according to a second embodiment of the present invention;

FIG. 9 is a second schematic structural view of a positioning guide member according to a second embodiment of the present invention;

FIG. 10 is a schematic structural view of a bone-taking and bone-grafting member according to a preferred embodiment of the present invention;

FIG. 11 is an elevation view of a bone harvesting kit according to a preferred embodiment of the present invention (with the bone harvesting member omitted);

FIG. 12 is a cross-sectional view of section B-B of FIG. 11;

FIG. 13 is a schematic structural view of a bone removal member according to a preferred embodiment of the present invention;

FIG. 14 is a schematic view of a reaming pressure reducing member in accordance with a preferred embodiment of the invention;

FIG. 15 is a cross-sectional view of a reaming pressure relief member in accordance with a preferred embodiment of the invention;

FIG. 16 is a cross-sectional view of a pressure reducing reamer spindle according to a preferred embodiment of the present invention;

FIG. 17 is a schematic view of a bone graft portal of the preferred embodiment of the present invention;

FIG. 18 is a schematic view showing the structure of a knock-out pin according to a preferred embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

Referring to fig. 1, a hip-protecting percutaneous minimally invasive precise positioning bone-taking and pressure-reducing bone grafting device comprises: a positioning guide member 10 and a bone-taking bone-grafting member 20. The positioning pin 1 passes through the positioning guide member 10 and is inserted into the bone substance. The positioning guide member 10 is used to adjust the angle and position of the positioning pin 1. The bone taking and grafting member 20 can be sleeved on the positioning needle 1. The bone grafting member 20 is used to extract a necrotic portion of bone and implant a filling material.

Referring to fig. 1 to 7, the positioning guide member 10 includes: a corner piece 11 and a translation piece 12. The positioning pin 1 passes through the corner piece 11 and is inserted into the bone. The corner piece 11 is used for adjusting the angle of the positioning pin 1. The positioning pin 1 is inserted through the translator 12 and into the bone mass. The translator 12 is used to adjust the position of the locator pin 1.

Referring to fig. 2 to 5, the corner piece 11 includes: a first substrate 111, a reference channel 112 and an adjustment channel 113. The reference channel 112 opens on the first base 111. The positioning pin 1 passes through the reference channel 112 and is inserted into the bone. The reference channel 112 is used to fix the first substrate 111. The two ends of the reference channel 112 are a reference insertion end 112a and a reference insertion end 112b, respectively. The reference channels 112 are several. Several reference channels 112 share the same reference plug-in 112b. The adjustment channel 113 opens on the first base 111. The positioning pin 1 is inserted through the adjustment channel 113 into the bone substance. The two ends of the adjusting channel 113 are an adjusting insertion end 113a and an adjusting insertion end 113b. The number of the adjustment passages 113 is several. The adjustment channels 113 share the same adjustment insertion end 113b.

It can be understood that, when the corner piece 11 is used, firstly, a positioning needle 1 penetrates into a bone substance to be used as a positioning reference of an operation, if the angle of the first positioning needle 1 is not the optimal angle, the reference channel 112 of the corner piece 11 can be sleeved in the first positioning needle 1 in alignment, then, a proper adjusting channel 113 is found, and the second positioning needle 1 with the optimal angle is inserted, so that the optimal scheme of the operation is realized, the operation effect is improved, the difficulty of the subsequent operation is reduced, and the operation time is reduced.

It should be noted that, in some embodiments of the present invention, the included angle between the axes of two adjacent adjusting channels 113 is 3 degrees, and the maximum adjusting angle is 15 degrees, in other embodiments of the present invention, the included angle of the adjusting channels 113 may be changed by those skilled in the art according to actual requirements. Similarly, the maximum adjustment angle can also be achieved by increasing the adjustment channels 113 or adjusting the included angle between the adjustment channels 113.

It should be noted that, of course, the reference channel 112 and the adjustment channel 113 are interchangeable during the actual use of the corner member 11, that is, when the first positioning pin 1 is referenced to the reference channel 112, the second positioning pin 1 selects an optimal angle of the adjustment channel 113 to insert. When the first positioning pin 1 is based on the adjustment channel 113, the second positioning pin 1 selects an optimal angle of the reference channel 112 to insert. Both can achieve the purpose of adjusting the angle of the positioning needle 1.

Of course, it should be noted that the end of the corner piece 11 facing the surgical wound is designed to be blunt, so as to avoid interference of soft tissue and reduce the difficulty of the surgery.

Referring to fig. 6 to 7, the translation member 12 includes: a second base 121 and a positioning through hole 122. The positioning through hole 122 is opened on the second base 121. The positioning pin 1 passes through the positioning through hole 122 and is inserted into the bone. The positioning through holes 122 are several. The distance between the axes of any two adjacent positioning through holes 122 is 3mm, and the maximum adjusting distance is 12mm.

It is understood that the translation member 12 can achieve a maximum translation range of 12mm, and of course, a person skilled in the art can adaptively modify the adjustment range and the adjustment precision of the translation member 12 by adjusting the distance between any two adjacent positioning through holes 122 according to actual requirements.

It is of course worth noting that the maximum range of adjustment of the translator 12 is 12mm, complying with the concept of a minimally invasive surgical incision of less than 15 mm.

It can be understood that, when the insertion angle of the positioning needle 1 is correct, but the position is slightly deviated, one positioning through hole 122 can be selected to be sleeved in the positioning needle 1 in the translation member 12, then another suitable positioning through hole 122 is selected, and a second positioning needle 1 is inserted, that is, any positioning through hole 122 can be used as a positioning reference for position adjustment, so that the purpose of adjusting the position of the positioning needle 1 is achieved, the optimal surgical scheme is realized, the surgical effect is improved, the difficulty of subsequent surgery is reduced, and the surgical time is reduced.

Further, referring to fig. 6, one end of the second base 121 is an arc end, and the arc end can avoid soft tissue interference.

Of course, it should be noted that the arc end of the second base 121 is an end facing the surgical wound, so as to avoid interference of soft tissue.

Certainly, it is worth explaining that the positioning guide member 10 can achieve the beneficial effects of accurate positioning of the femoral head necrosis area, shortened operation time, reduced operation trauma, reduced X-ray transmission times in the operation and the like under the condition of only percutaneous, closed and minimally invasive operations. Reduces the operation trauma and is beneficial to the postoperative recovery of the patient.

Meanwhile, compared with the prior art, the positioning guide member 10 does not need to be customized specifically, and has wide applicability. Meanwhile, the medical disinfection device can be repeatedly used after disinfection, is more economical and practical, can reduce the treatment cost of patients, and is convenient for hospital use and popularization.

Of course, referring to fig. 8 and 9, in the second embodiment of the present invention, the corner member 11 and the translation member 12 may be integrated into a whole, and the reference channel 112, the adjustment channel 113 and the positioning through hole 122 may be disposed on a single substrate.

Referring to fig. 1 and 10, the bone-taking bone graft member 20 includes: a locating sleeve 21, a bone taking kit 22 and a bone grafting kit 23. The positioning sleeve 21 can be sleeved on the positioning needle 1. The bone removal kit 22 may be fitted over the positioning sleeve 21. The bone removal kit 22 is used for removing necrotic lesions and healthy bone in the head and neck. A bone grafting kit 23 is connected to the bone removal kit 22 for implantation of a filling material.

Further, the inner diameter of the positioning sleeve 21 is equal to the diameter of the positioning needle 1.

It can be understood that the inner diameter of the positioning sleeve 21 is equal to the diameter of the positioning needle 1, the positioning sleeve 21 is sleeved on the fixed positioning needle 1, and then the bone taking kit 22 is sleeved on the positioning sleeve 21, so that the fixation of the bone taking kit 22 can be realized.

Referring to fig. 10 to 13, the bone-taking kit 22 includes: a handle 221, a bone saw 222, and a bone removal member 223. The handle 221 is used for gripping. The handle 221 has a first through hole 221a. The bone saw 222 is detachably provided on the handle 221. The bone saw 222 is provided with a second through hole 222a. The second through hole 222a communicates with the first through hole 221a. Bone removal member 223 may be passed through handle 221 and bone saw 222 and threaded into the bone. The bone removal member 223 has a threaded end 223a at one end and a handle end 223b at the other end. Threaded end 223a may be drilled into bone. Of course, it should be noted that the bone saw 222 has a saw-toothed shape at one end and is connected to the handle 221 at the other end.

Of course, it should be noted that the connection portion between the bone saw 222 and the handle 221 is designed as an elastic lock, and the elastic lock includes a slot and an elastic lock core. The clamping groove is formed in the end portion of the bone saw 222, and the elastic lock cylinder is arranged on the handle 221. When the bone saw 222 is inserted into the handle 221, the resilient lock cylinder is received in the slot. The bone saw 222 is further provided with a hexagonal rotation stop block at the end thereof, and the hexagonal rotation stop block can be matched with the rotation stop groove on the handle 221 to prevent the handle 221 and the bone saw 222 from rotating relatively.

Further, the bone extraction kit 22 also includes a depth stop 224. The depth limiter 224 is sleeved on the bone saw 222 and used for limiting the bone-taking depth of the bone saw 222.

Of course, it is worth mentioning that the bone harvesting procedure is as follows: the positioning pin 1 is first penetrated into the bone, and then the position of the positioning pin 1 is adjusted using the positioning guide member 10. Then the positioning sleeve 21 is sleeved on the positioning needle 1. After the bone saw 222 is connected to the handle 221, the second through hole 222a of the bone saw 222 is sleeved on the positioning sleeve 21. The handle 221 is rotated to drill the bone. When the depth stop 224 abuts against the bone, drilling is stopped. The handle 221 is removed, the positioning pin and the positioning sleeve 21 are taken out, the threaded end 223a at the front end of the bone taking piece 223 is used for drilling into the bone, the rod-shaped bone is drawn out, and the bone taking process is completed.

Referring to fig. 14-16, bone-harvesting bone-grafting member 20 further includes a reaming relief member 24. The reaming pressure reducing member 24 includes: a pressure reducing reamer rod 241, a pressure reducing guide hole 242, and a pressure reducing reamer needle 243. The pressure reducing reaming rod 241 can be inserted into the bone tunnel formed by the bone removal kit 22. A decompression guide hole 242 is opened in the decompression hole expanding rod 241. The relief guide hole 242 includes a first orifice 242a and a second orifice 242b. The first and

second port passages

242a and 242b communicate. The junction of the first and

second orifices

242a, 242b is rounded. The first and

second orifices

242a, 242b are angled. The angle between the axes of the first and

second orifices

242a, 242b is between 0 and 30 degrees. A decompression-reaming needle 243 is inserted from one end of the decompression guide hole 242 and is pierced from the other end. The pressure reducing and hole expanding needle 243 can be bent along the pressure reducing guide hole 242 for a certain angle and then extended out for expanding and reducing pressure.

It should be noted that when the reaming pressure reducing member 24 is used, the pressure reducing reaming rod 241 is first inserted into the bone tunnel drilled by the bone saw 222, so that the pressure reducing reaming rod 241 reaches the vicinity of the lesion. Then, a pressure-reducing reaming needle 243 is used to insert into the pressure-reducing guiding hole 242, and the pressure-reducing reaming needle 243 is naturally bent during the insertion process and then inserted into the periphery of the lesion at a certain angle with respect to the bone canal. Then, the pressure-reducing and hole-expanding needle 243 is pulled out, the hole-expanding and pressure-reducing member 24 is rotated, and the above steps are repeated to complete the hole-expanding and pressure-reducing operation at the focus.

It can be understood that the reaming pressure reducing member 24 can be inserted into the bone canal drilled by the bone saw 222, and the lesion at the end of the bone canal is drilled and reduced by the pressure reducing reaming needle 243, so as to enlarge the pressure reducing range of the necrotic lesion and enhance the operation effect.

Referring to fig. 10, 17 and 18, the bone graft kit 23 includes: a bone graft portal 231 and a top rod 232. The bone graft inlet 231 is detachably provided on the handle 221. The bone graft inlet 231 communicates with the first through hole 221a. The top bar 232 may be inserted into the first through hole 221a and the second through hole 222a. The ejector rod 232 is used for ejecting the filling material to the femoral head necrosis focus.

Of course, it should be noted that in some embodiments of the present invention, the bone graft inlet 231 has a funnel shape, and the opening at the upper end is larger than the hole at the connection portion, so as to facilitate the entry of material and prevent material leakage.

Of course, it should be noted that the rod 232 can be inserted into one end of the first through hole 221a, and the end of the rod is a concave arc surface for binding and collecting bone grafting materials.

When the bone grafting is performed, the bone taking kit 22 is kept still, the bone grafting inlet 231 is arranged on the handle 221, the taken bone rod is broken or mixed with other filling materials and then placed into the bone grafting inlet 231, the bone grafting materials enter the first through hole 221a through the bone grafting inlet 231, and then the bone grafting materials enter the opened bone tunnel holes along the first through hole 22a1 and the second through hole 222a through the ejector rod 232. The bone grafting process is completed.

Of course, it should be noted that the filling material described herein may be used to mix the healthy bone portion extracted from the bone grafting member 20 into the filling material, so as to realize the reuse of the autologous bone. The bone taking and grafting component 20 solves the bone waste when the medullary core of the femoral head necrosis reduces the pressure, reduces the secondary injury of the autologous bone taking, provides a new technical means for effectively utilizing the bone in the femoral head and neck, obtains extremely satisfactory treatment effect, opens up a new way for treating the femoral head necrosis and has extremely good popularization value.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. The utility model provides a protect accurate location of hip percutaneous wicresoft and get bone decompression bone grafting device which characterized in that includes:

the bone locating device comprises a locating guide component (10), a locating needle (1) penetrates through the locating guide component (10) and is inserted into a bone, and the locating guide component (10) is used for adjusting the angle and the position of the locating needle (1); and

the bone taking and grafting component (20) can be sleeved on the positioning needle (1), and the bone taking and grafting component (20) is used for taking out femoral head necrosis focuses and healthy sclerotin in the head and neck and implanting filling materials;

the positioning guide member (10) comprises a corner piece (11) and a translation piece (12), the positioning needle (1) penetrates through the corner piece (11) and is inserted into a bone, the corner piece (11) is used for adjusting the angle of the positioning needle (1), the positioning needle (1) penetrates through the translation piece (12) and is inserted into the bone, and the translation piece (12) is used for adjusting the position of the positioning needle (1);

the corner piece (11) comprises a first base body (111), a reference channel (112) and an adjusting channel (113), wherein the reference channel (112) is arranged on the first base body (111), positioning pins (1) penetrate through the reference channel (112) and are inserted into a bone, the reference channel (112) is used for fixing the first base body (111), two ends of the reference channel (112) are a reference insertion end (112 a) and a reference insertion end (112 b), the reference channel (112) is provided with a plurality of reference channels, the reference channels (112) share the same reference insertion end (112 b), the adjusting channel (113) is arranged on the first base body (111), the positioning pins (1) penetrate through the adjusting channel (113) and are inserted into the bone, two ends of the adjusting channel (113) are an adjusting insertion end (113 a) and an adjusting insertion end (113 b), the adjusting channel (113) is provided with a plurality of adjusting channels, and the adjusting channels (113) share the same adjusting insertion end (113 b);

the translation piece (12) comprises a second base body (121) and a plurality of positioning through holes (122), the positioning through holes (122) are formed in the second base body (121), the positioning needles (1) penetrate through the positioning through holes (122) and are inserted into bone, and the plurality of positioning through holes (122) are formed;

the bone taking and grafting component (20) comprises a positioning sleeve (21), a bone taking kit (22) and a bone grafting kit (23), wherein the positioning sleeve (21) can be sleeved on the positioning needle (1), the inner diameter of the positioning sleeve (21) is equal to the diameter of the positioning needle (1), the bone taking kit (22) can be sleeved on the positioning sleeve (21), the bone taking kit (22) is used for taking out necrotic lesions and healthy sclerotin in the head and neck, and the bone grafting kit (23) is connected with the bone taking kit (22) and used for implanting filling materials;

the bone taking kit (22) comprises a handle (221), a bone saw (222) and a bone taking part (223), wherein the handle (221) is used for holding, a first through hole (221 a) is formed in the handle (221), the bone saw (222) is detachably arranged on the handle (221), a second through hole (222 a) is formed in the bone saw (222), the second through hole (222 a) is communicated with the first through hole (221 a), the bone taking part (223) can penetrate through the handle (221) and the bone saw (222) and can be screwed into a bone, one end of the bone taking part (223) is a threaded end (223 a), the other end of the bone taking part (223) is a handle end (223 b), and the threaded end (223 a) can be drilled into the bone;

the bone grafting kit (23) comprises a bone grafting inlet piece (231) and a top rod (232), the bone grafting inlet piece (231) is detachably arranged on the handle (221), the bone grafting inlet piece (231) is communicated with the first through hole (221 a), the top rod (232) can be inserted into the first through hole (221 a) and the second through hole (222 a), and the top rod (232) is used for abutting against a filling material to a femoral head necrosis focus.

2. The hip-protecting percutaneous minimally invasive precise-positioning bone-taking and pressure-reducing bone grafting device according to claim 1, wherein one end of the second base body (121) is a circular arc end, and the circular arc end can avoid soft tissue interference.

3. The hip-protecting percutaneous minimally invasive precise-positioning bone-taking and pressure-reducing bone grafting device as claimed in claim 1, wherein the bone-taking kit (22) further comprises a depth limiting device (224), and the depth limiting device (224) is sleeved on the bone saw (222) and used for limiting the bone-taking depth of the bone saw (222).

4. The hip-protecting percutaneous minimally invasive precise-positioning bone-taking and pressure-reducing bone grafting device according to claim 1, wherein the bone-taking and bone-grafting member (20) further comprises a reaming pressure-reducing member (24), the reaming pressure-reducing member (24) comprising:

the decompression hole expanding rod (241) can be inserted into a bone channel formed in the bone taking kit (22);

the decompression guide hole (242) is formed in the decompression reaming rod (241), the decompression guide hole (242) comprises a first hole channel (242 a) and a second hole channel (242 b), the first hole channel (242 a) is communicated with the second hole channel (242 b), the joint of the first hole channel (242 a) and the second hole channel (242 b) is in smooth transition, the first hole channel (242 a) and the second hole channel (242 b) form a certain angle, and the included angle between the axes of the first hole channel (242 a) and the second hole channel (242 b) is 0-30 degrees; and

and the pressure reducing and expanding needle (243) is inserted from one end of the pressure reducing guide hole (242) and penetrates out from the other end of the pressure reducing and expanding needle, and the pressure reducing and expanding needle (243) can be bent at a certain angle along the pressure reducing guide hole (242) and then extends out for expanding and reducing pressure.