CN105286944B - A kind of novel hollow bores medical micro fractures instrument - Google Patents
A kind of novel hollow bores medical micro fractures instrument Download PDFInfo
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- CN105286944B CN105286944B CN201510816922.4A CN201510816922A CN105286944B CN 105286944 B CN105286944 B CN 105286944B CN 201510816922 A CN201510816922 A CN 201510816922A CN 105286944 B CN105286944 B CN 105286944B
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- pusher
- core bar
- drill
- cavity
- outer diameter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
Abstract
The invention discloses a kind of novel hollows to bore medical micro fractures instrument, including subchondral bone can be made to generate the drill of micro fractures, the drill is by the sequentially connected circular tube shaped hollow boring bit with the first cavity, drill head, rigid solid pipe and drill shank composition, the drill head is internally provided with the second cavity, drill is provided with strip-shaped groove on head, first cavity of the hollow boring bit, second cavity on drill head is connected with strip-shaped groove three, the micro fractures instrument further includes pusher, the strip-shaped groove that the pusher can stretch into is moved in second cavity on drill head by the bone tissue release in the first cavity of embedded hollow boring bit.The novel hollow of the present invention, which bores medical micro fractures instrument, has the advantages that damage is small, easy to operation, the effect of can effectively reducing the damage of subchondral bone, greatly improve microfrature.
Description
Technical field
The present invention relates to a kind of micro fractures instruments more particularly to a kind of novel hollow to bore medical micro fractures instrument.
Background technology
Articular cartilage damage is the common disease and refractory disease of musculoskeletal system.Articular cartilage damage is mainly cartilage
Defect often involves subchondral bone.Articular cartilage and subchondral bone have the relationship of " with bared lips ", and subchondral bone is to upper strata cartilage
Play the role of important mechanical support and nutritional support.Currently for cartilage defect, basic treatment technology is micro fractures
Art.Microfrature is on exposed subchondral bone face, and miniature bone is manufactured using special bradawl or special micro fractures instrument
It rolls over (drilling on subchondral bone), so as to overflow marrow components, promotes a kind of minimally-invasive treatment technology of cartilage defect repair.It is logical
It crosses the small fracture of manufacture subchondral bone and causes local hemorrhage, formed at focal cartilage defect rich in medulla mesenchyma
The blood clot of stem cell, under the regulation and control stimulation of human body repair mechanism, mesenchymal stem cells differentiation generation includes fiber group
It knits, the tissues such as fibrocartilage and hyaline cartilage, repairs cartilage defect, restore function of joint to a certain extent, relieve pain.
United States Patent (USP) 6,960,214 discloses a kind of micro fractures instrument.Chinese patent CN102781346A also discloses that one
Plant the instrument for generating micro fractures in bone.However, some researches show that about 1/3 receives the patient of above-mentioned micro fractures treatment
The variation of series occurs for region under cartilage：Subchondral bone thickens, subchondral cyst is sexually revised with intralesional spur etc..These pathology change
Become the performance for being considered cartilage and subchondral bone regression and microfrature failure.Clinic needs one kind in microfrature, energy
Reduce the micro fractures instrument of subchondral bone damage.
Invention content
The medical micro fractures of novel hollow brill small, easy to operation are damaged the technical problem to be solved in the present invention is to provide a kind of
The effect of instrument can effectively reduce the damage of subchondral bone, greatly improve microfrature.
In order to solve the above technical problems, a kind of novel hollow of the present invention bores medical micro fractures instrument, including that can make cartilage
Sending down the fishbone generates the drill of micro fractures, and the drill is by the sequentially connected circular tube shaped hollow boring bit with the first cavity, brill
Hole device head, rigid solid pipe and drill shank composition, the drill head is internally provided with the second cavity, drill
Strip-shaped groove, the first cavity of the hollow boring bit, second cavity on drill head and strip-shaped groove are provided on head
Three is connected, and the micro fractures instrument further includes pusher, and the pusher can stretch into strip-shaped groove in drill head
It is moved in second cavity in portion and releases the bone tissue in the first cavity of embedded hollow boring bit.
Preferably, the front end of the hollow boring bit is zigzag or sharp inclined-plane, hollow boring bit and the drill head
Portion is coaxially arranged, symmetrical rotation handle is provided on the rigid solid pipe, the pusher is by sequentially connected pusher
Core bar, pusher connecting portion and pusher handle composition, the pusher core bar include core bar leading portion and core bar back segment, the core
Bar leading portion is cylinder, and core bar leading portion is matched with hollow boring bit.
Preferably, the pusher core bar and pusher handle are at a right angle, the pusher connecting portion for straight rod-shaped or
Arc.
Preferably, the core bar back segment of the pusher core bar is cylinder, the outer diameter of core bar back segment is not less than before core bar
The outer diameter of section.
Preferably, there are one guide portion, institutes for setting between the front end on the drill head and strip-shaped groove front end
The centre for stating guide portion is provided with third cavity, and the third cavity is circular through hole, and the of the core bar back segment and guide portion
Three cavitys match.
Preferably, the core bar back segment is cylinder, the outer diameter of core bar back segment is not less than the outer diameter of core bar leading portion, described
Thickness is identical up and down for the third cavity of guide portion, and the diameter of the third cavity of guide portion is bigger 0.1- than the outer diameter of core bar back segment
0.2mm, the length of guide portion are not less than the length of core bar leading portion.
Preferably, the core bar back segment is truncated cone-shaped, the outer diameter of core bar back segment is from core bar leading portion to pusher connecting portion
Gradually increase, the diameter of the third cavity of the guide portion gradually increase, and the diameter of the third cavity of guide portion is than core bar back segment
The big 0.1-0.2mm of outer diameter of corresponding position, the length of guide portion are not less than the length of core bar leading portion.
Preferably, the material of the drill and pusher is good 304 stainless steel, 316 stainless steels or titanium
Each connecting component of alloy, drill and pusher is connected using welding manner.
Preferably, the hollow boring bit length is 4-5mm, the outer diameter of hollow boring bit is 0.8-1.5mm, hollow boring bit
Internal diameter is 0.4-0.8mm, and the outer diameter of the core bar leading portion 18 of the pusher core bar 15 is smaller 0.1mm than the internal diameter of hollow boring bit 2, core
The length of bar leading portion is longer 1mm than the length of hollow boring bit, the drill head be hollow cylinder, the length on drill head
It spends for 45mm, the outer diameter 8mm on drill head, the length of the strip-shaped groove is 20mm, and the width of strip-shaped groove is
5mm, the distance of strip-shaped groove front end and drill head front end are 10mm, and the length of the pusher core bar is 16mm, institute
State pusher connecting portion thickness up and down is identical and section is circle, the length of pusher connecting portion is 15mm, pusher connection
The outer diameter in portion is 4mm.
Preferably, the length of the rigid solid pipe is 135mm, the outer diameter of rigid solid pipe is 6mm, the pusher
Handle is cylinder, and the length of pusher handle is 100mm, and the outer diameter 12mm of pusher handle, the drill shank is circle
Dish type, the discoidal outer diameter are 20mm, and the rotation handle is cylinder, and the length for rotating handle is respectively 40mm, rotation
The distance of the outer diameter 12mm of handle, rotation handle and drill shank is 50mm.
The advantageous effect that a kind of novel hollow of the present invention bores medical micro fractures instrument is：
(1) micro fractures instrument of the invention is made of drill and pusher, and drill has first by sequentially connected
The circular tube shaped hollow boring bit of cavity, drill head, rigid solid pipe and drill shank composition, the drill head it is interior
Portion is provided with the second cavity, and strip-shaped groove, the first cavity of the hollow boring bit, drill head are provided on drill head
The second cavity be connected with strip-shaped groove three, the micro fractures instrument further includes pusher, and the pusher can be stretched
Enter strip-shaped groove mobile bone tissue by the first cavity of embedded hollow boring bit in second cavity on drill head to push away
Go out.The micro fractures instrument of the present invention can take out the bone tissue generated when subchondral bone punches, can mitigate or even avoid
Crush injury is generated to subchondral bone around, and is conducive to the ingredients such as the cell under cartilage in cancellous bone spilling, improves micro fractures hand
The effect of art.By applicant to micro fractures postoperative subchondral bone and repair cartilage degeneration symptom long-term further investigation,
It has been found that the reason of causing subchondral bone lesion after micro fractures operation mainly has two：First, use solid bit pair
Subchondral bone around drilling causes " crush injury ".Due to not taking out the bone tissue in hole, to solid bit instant impact
Subchondral bone in hole is subjected to pressure extruding down and toward surrounding, cause the subchondral bone around drilling be extruded it is impaired (i.e.
" crush injury ").Aperture is more, and crush injury is more serious.Second is that using solid electric drilling machine, by subchondral bone high speed rotation into
Powder reaches drilling purpose.The bone tissue around heat device to hole that the high speed rotation generates causes " thermal damage ", and articular cavity
Interior bone powder is not easy fully erased.And the micro fractures instrument of the present invention, using hollow drill bit, taken out in boring procedure
Embedded bone tissue, it is possible to reduce " crush injury " and " thermal damage " are caused to the subchondral bone around drilling, protect subchondral bone,
Microfrature infectious-related complication is substantially reduced, curative effect greatly improved.
(2) front end of hollow boring bit is zigzag or sharp inclined-plane, can accurately be anchored punching site, make drill bit in cartilage
It is preferably positioned in sending down the fishbone, prevents from slipping during drilling, reduced and scratch or abrade surrounding tissue.Hollow boring bit and the drill head
Portion is coaxially arranged, can make hollow boring bit uniform force, and the cartilage near hollow boring bit is prevented to be damaged due to discontinuity.Just
Property solid tubes on be provided with symmetrical rotation handle, drill bit can not only in a manner of tapping punched, brill can also be made
Head is punched in a rotative pattern, facilitates punch operation.Pusher is connected by sequentially connected cylindric pusher core bar, pusher
Socket part and pusher handle composition, the pusher core bar include core bar leading portion and core bar back segment, and the core bar leading portion is cylinder
Shape, core bar leading portion are matched with hollow boring bit, it may be convenient to bone tissue embedded in hollow boring bit be released, and by core drill
Bone tissue in head is cleaned out.
(3) pusher core bar and pusher handle are at a right angle, and the pusher connecting portion is straight rod-shaped or arc, can be made
Pusher releases the bone tissue in hollow boring bit, and operation is more convenient, and operates accurately, laborsaving.
(4) the core bar back segment of pusher core bar is cylinder, and the outer diameter of core bar back segment is not less than the outer diameter of core bar leading portion, can
To increase the intensity of pusher core bar, pusher core bar especially core bar leading portion is prevented to be broken.
(5) it is set between the front end on drill head and strip-shaped groove front end there are one guide portion, the guide portion
Centre is provided with third cavity, and the third cavity is circular through hole, and the third cavity of the core bar back segment and guide portion matches
It closes.By guiding of the third cavity of guide portion to pusher core bar, the core bar leading portion of pusher core bar can be made easily to be inserted into
Into the first cavity of hollow boring bit, the core bar leading portion of pusher core bar is prevented to be broken.
(6) core bar back segment is cylinder, and the outer diameter of core bar back segment is not less than the outer diameter of core bar leading portion, the of the guide portion
Thickness is identical up and down for three cavitys, and the diameter of the third cavity of guide portion is bigger 0.1-0.2mm than the outer diameter of core bar back segment, guide portion
Length is not less than the length of core bar leading portion, matches the third cavity of guide portion and the core bar back segment of larger outer diameter, Ke Yizeng
Add the intensity of pusher core bar, pusher core bar can be made easily to be inserted into the third cavity of guide portion, pusher core bar can be made
Core bar leading portion be easily inserted into the first cavity of hollow boring bit, prevent core bar leading portion from encountering the hole wall of guide portion, anti-thrust
Go out the core bar leading portion fracture of device core bar.
(7) core bar back segment is truncated cone-shaped, and the outer diameter of core bar back segment gradually increases from core bar leading portion to pusher connecting portion, institute
The diameter for stating the third cavity of guide portion gradually increases, and the diameter of the third cavity of guide portion is than core bar back segment corresponding position
The big 0.1-0.2mm of outer diameter, the length of guide portion are not less than the length of core bar leading portion, make the third cavity of guide portion and larger outer diameter
Core bar back segment match, the intensity of pusher core bar can be increased, the third cavities open of guide portion is big, can make pusher
Core bar is easily inserted into the third cavity of guide portion, and the core bar leading portion of pusher core bar can be made to be easily inserted into the of hollow boring bit
It in one cavity, prevents core bar leading portion from encountering the hole wall of guide portion, the core bar leading portion of pusher core bar is prevented to be broken.
(8) material of drill and pusher is good 304 stainless steel, 316 stainless steels or titanium alloy, can be to prevent
Only drill and pusher get rusty, and conveniently carry out disinfection and preserve, and avoid postoperative infection.Each connecting portion of drill and pusher
Part is connected using welding manner, and drill and pusher can be made solid reliable, sturdy and durable.
(9) hollow boring bit length is 4-5mm, and because the thickness of general subcartilaginous osseous lamella is 1-3mm, which can make core drill
Head arrives at the cancellous bone below subcartilaginous osseous lamella, it is ensured that the marrow blood outflow under cartilage in cancellous bone.The outer diameter of hollow boring bit is
0.8-1.5mm, the internal diameter of hollow boring bit is 0.4-0.8mm, it can be ensured that marrow blood can smoothly flow out.Hollow boring bit is too small, meeting
Make the hole beaten too small, cause marrow blood that cannot flow out, it is impossible to play the effect of reparation.Outside the core bar leading portion of pusher core bar
Diameter is smaller 0.1mm than the internal diameter of hollow boring bit, and the length of core bar leading portion is longer 1mm than the length of hollow boring bit, can make pusher core
Core bar leading portion and the hollow boring bit of bar are worked in coordination, and the bone tissue being embedded in hollow boring bit is cleaned out.Drill head is
Hollow cylinder, the length on drill head are 45mm, the outer diameter 8mm on drill head, the length of the strip-shaped groove
For 20mm, the width of strip-shaped groove is 5mm, and the distance of strip-shaped groove front end and drill head front end is 10mm, described
The length of pusher core bar is 16mm, and the thickness up and down of pusher connecting portion is identical and section is circle, the pusher connection
The length in portion is 15mm, and the outer diameter of pusher connecting portion is 4mm.Pusher core bar and pusher connecting portion can be made easily to stretch
Enter in strip-shaped groove, and pusher core bar and pusher connecting portion is made easily to be moved in the cavity on drill head, make to push away
Go out device core bar to be easily inserted into the cavity of hollow boring bit, and pusher core bar is made to be stretched out from the front end of hollow boring bit, by core drill
The cartilage of head is released, and is cleaned out.The thickness up and down of pusher connecting portion is identical and section is circle, makes the operation of pusher more
Add smooth.
(10) length of rigid solid pipe is 135mm, and the outer diameter of rigid solid pipe is 6mm, can make the length of drill
Facilitate carry out drilling operation with weight, prevent too short or long, kick the beam or overweight, ensure the accuracy of operation.The pusher
Handle is cylinder, and the length of pusher handle is 100mm, and the outer diameter 12mm of pusher handle can make pusher handle side
Just it holds, can make the length of pusher and weight facilitates the release operation for carrying out cartilage, prevent too short or long, kick the beam or mistake
Weight.Drill handle designs are into disc, and dynamics evenly distributes when so that the hollow boring bit is drilled.Discoidal outer diameter is
20mm can increase forced area, be conveniently operated.The rotation handle is cylinder, and the length for rotating handle is respectively 40mm, rotation
The outer diameter 12mm of handle is changed hands, rotation handle and the distance of drill shank are 50mm, can make the length and outer diameter of rotation handle
Facilitate gripping, facilitate carry out drilling operation, prevent it is too short or long, it is too small or excessive, ensure operation accuracy.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the signal that a kind of novel hollow of the present invention bores the first embodiment of the drill of medical micro fractures instrument
Figure.
Fig. 2 is the sectional view of Fig. 1 drills.
Fig. 3 is the sectional view of pusher the first embodiment to match with Fig. 1 drills.
Fig. 4 is the sectional view of second of embodiment of pusher to match with Fig. 1 drills.
Fig. 5 is the sectional view of pusher the third embodiment to match with Fig. 1 drills.
Fig. 6 is the sectional view of the 4th kind of embodiment of pusher to match with Fig. 1 drills.
Fig. 7 is the section view of second of embodiment of drill that a kind of novel hollow of the present invention bores medical micro fractures instrument
Figure.
Fig. 8 is the section view that a kind of novel hollow of the present invention bores the third embodiment of the drill of medical micro fractures instrument
Figure.
Fig. 9 is the section view for the 4th kind of embodiment of drill that a kind of novel hollow of the present invention bores medical micro fractures instrument
Figure.
Figure 10 is the sectional view of the 7th kind of embodiment of pusher to match with Fig. 9 drills.
Figure 11 is the sectional view of the 8th kind of embodiment of pusher to match with Fig. 9 drills.
Specific embodiment
As shown in Figure 1 to 11, a kind of novel hollow bores medical micro fractures instrument, by subchondral bone can be made to generate micro fractures
Drill 1 and the pusher 14 of releasing bone tissue embedded in drill 1 form.
As shown in Figure 1 and Figure 2, the first embodiment of drill 1, drill 1 have first cavity by sequentially connected
Circular tube shaped hollow boring bit 2, drill head 4, rigid solid pipe 5 and drill shank 6 form, and the inside on drill head 4 is set
The second cavity 3 is equipped with, is provided with strip-shaped groove 7 on drill head 4, the first cavity of hollow boring bit 2, drill head 4
Second cavity 3 is connected with 7 three of strip-shaped groove, and symmetrical rotation handle 8, drill head are provided on rigid solid pipe 5
The shape in portion 4 for cylinder, be respectively arranged on the front end on drill head 49 and rear end 10 corresponding circular seal piece 11,
12, the middle part of diaphragm seal 11 opens that there are one the holes to match with the rear end of hollow boring bit 2, and the front end 13 of hollow boring bit 2 is zigzag
Or sharp inclined-plane, hollow boring bit 2 and drill head 4 are coaxially arranged.Second cavity 3 is the circle coaxial with drill head 4
Hole.2 length of hollow boring bit is 4-5mm, preferably 5mm.The outer diameter of hollow boring bit 2 is 0.8-1.5mm, preferably 1.5mm.Hollow boring bit
2 internal diameter is 0.4-0.8mm, preferably 0.8mm.The length on drill head 4 is 45mm, and the outer diameter on drill head 4 is 8mm,
The internal diameter on drill head 4 is 6mm, and the thickness of diaphragm seal 11,12 is 1mm, and the length of strip-shaped groove 7 is 20mm, strip
The width of groove 7 is 5mm, and the distance of 7 front end of strip-shaped groove and 4 front end 9 of drill head is 10mm.Drill head 4
Wall thickness is 1mm, and drill head can be made to have higher intensity, be unlikely to deform.The length of rigid solid pipe 5 is 135mm, just
Property solid tubes 5 outer diameter be 6mm.Drill shank 6 is the disc of outer diameter 20mm.Handle 8 is rotated for cylinder, rotates handle
8 length is respectively 40mm, and the outer diameter of rotation handle 8 is 12mm, and the distance for rotating handle 8 and drill shank 6 is 50mm.Drilling
Each component hollow boring bit 2 of device 1, drill head 4, rigid solid pipe 5, rotation handle 8 and drill shank 6 material be
The appropriate hardness such as good 304 stainless steel, 316 stainless steels or titanium alloy and toughness and corrosion resistant metal material is made, energy
Hollow boring bit 2 is made to drill through the cancellous bone below subchondral bone arrival subcartilaginous osseous lamella, it is ensured that the marrow blood under cartilage in cancellous bone
Outflow.Each connecting component of drill 1 is connected using welding manner.
As shown in figure 3, the first embodiment of pusher 14, the first embodiment is used in combination with drill 1, is pushed away
Go out device 14 to be made of sequentially connected cylindrical pusher core bar 15, pusher connecting portion 16 and pusher handle 17.Pusher
Connecting portion 16 and 17 shape of pusher handle are cylinder.The outer diameter of pusher core bar 15 matches with the internal diameter of hollow boring bit 2
It closes.Pusher core bar 15 is at a right angle with pusher handle 17, and pusher connecting portion 16 is straight rod-shaped.The pusher core of pusher 14
Bar 15, pusher connecting portion 16 can stretch into second cavity 3 on strip-shaped groove 7 and drill head 4 by the of hollow boring bit 2
Embedded bone tissue is released in one cavity.The outer diameter of pusher core bar 15 is smaller 0.1mm than the internal diameter of hollow boring bit 2, pusher core
The outer diameter of bar 15 is the outer diameter 0.7mm of 0.3-0.7mm, preferably pusher core bar 15.The length of pusher core bar 15 is 16mm, is pushed away
The length for going out device connecting portion 16 is 15mm, and the outer diameter of pusher connecting portion 16 is 4mm.The length of pusher handle 17 is 100mm,
The outer diameter of pusher handle 17 is 12mm.Each component pusher core bar 15, pusher connecting portion 16 and the pusher of pusher 14
The material of handle 17 is the appropriate hardness such as good 304 stainless steel, 316 stainless steels or titanium alloy and toughness and corrosion resistant
Metal material is made, and each connecting component of pusher 14 is connected using welding manner.
As shown in figure 4, second of the embodiment of pusher 14, the first embodiment is used in combination with drill 1, figure
The pusher 14 of 4 pusher 14 and Fig. 3 is essentially identical.The difference lies in the pusher connecting portions 16 of the pusher 14 of Fig. 4
For arc solid circular pipe, upper and lower thickness is identical.
As shown in figure 5, the third embodiment of pusher 14, the first embodiment is used in combination with drill 1, figure
The pusher 14 of 5 pusher 14 and Fig. 3 is essentially identical.The difference lies in the pusher core bar 15 of the pusher 14 of Fig. 5 wraps
The core bar leading portion 18 of interconnection and core bar back segment 19 are included, core bar back segment 19 is connected with pusher connecting portion 16.Core bar leading portion
18 be cylinder, and core bar leading portion 18 is matched with hollow boring bit 2.The outer diameter of the core bar leading portion 18 of pusher core bar 15 compares core drill
The first 2 small 0.1mm of internal diameter, the outer diameter of core bar leading portion 18 are the outer diameter 0.7mm of 0.3-0.7mm, preferably core bar leading portion 18.Before core bar
The length of section 18 is longer 1mm than the length of hollow boring bit 2, and the length of core bar leading portion 18 is 5-6mm, preferably 6mm.Pusher core bar 15
Core bar back segment 19 be cylinder, the outer diameter of core bar back segment 19 is more than the outer diameter of core bar leading portion 18, and preferably core bar back segment 19 is outer
Diameter is 1-3mm.
As shown in fig. 6, the 4th kind of embodiment of pusher 14, the first embodiment is used in combination with drill 1, figure
The pusher 14 of 6 pusher 14 and Fig. 5 is essentially identical.The difference lies in the pusher connecting portions 16 of the pusher 14 of Fig. 6
For arc solid circular pipe, upper and lower thickness is identical.
As shown in fig. 7, second of the embodiment of drill 1, the drill 1 of drill 1 and Fig. 2 of Fig. 7 is essentially identical.No
It is with part, there are one draw for setting between 7 front end of front end 9 and strip-shaped groove on the drill head 4 of the drill 1 of Fig. 7
Portion 20 is led, the centre of guide portion 20 is provided with third cavity, and third cavity is circular through hole.First cavity of hollow boring bit 2 bores
Second cavity 3 on hole device head 4, the third cavity of guide portion 20 are connected with strip-shaped groove 7.Thickness phase above and below third cavity
With and size it is identical with the internal diameter of hollow boring bit 2.The length of guide portion is 5-10mm, preferably 10mm.
The pusher 14 of the first and second of embodiment can be with second as shown in Figure 7 in fact as shown in Figure 3, Figure 4
The drill 1 for applying mode is used in combination.
As shown in figure 8, the third embodiment of drill 1, the drill 1 of drill 1 and Fig. 7 of Fig. 8 is essentially identical.No
It is with part, thickness is identical up and down and size and the pusher that is used cooperatively for the third cavity of the guide portion 20 of Fig. 8 drills 1
19 outer diameter of core bar back segment of core bar 15 matches.The outer diameter of core bar back segment 19 is more than the outer diameter of core bar leading portion 18, preferably core bar back segment
19 outer diameter is 1-3mm.The diameter of the circular through hole of guide portion 20 is bigger 0.1-0.2mm than the outer diameter of core bar back segment 19, guide portion
20 length is not less than the length of core bar leading portion 18, and the preferably length of guide portion 20 is 7-10mm.
The 5th kind of embodiment of pusher 14, is used in combination with the drill 1 of the third embodiment shown in Fig. 8, with
The pusher 14 of the third embodiment is essentially identical shown in Fig. 5, the difference is that, the pusher of the 5th kind of embodiment
19 outer diameter of core bar back segment of 14 pusher core bar 15 and the third cavity of the guide portion 20 of Fig. 8 drills 1 match, guide portion 20
Third cavity diameter it is bigger 0.1-0.2mm than the outer diameter of core bar back segment 19, the outer diameter of core bar back segment 19 is more than core bar leading portion 18
Outer diameter, preferably the outer diameter of core bar back segment 19 be 1-3mm.
The 6th kind of embodiment of pusher 14, is used in combination with the drill 1 of the third embodiment shown in Fig. 8, with
The pusher 14 of the 4th kind of embodiment is essentially identical shown in Fig. 6, the difference is that, the pusher of the 6th kind of embodiment
19 outer diameter of core bar back segment of 14 pusher core bar 15 and the third cavity of the guide portion 20 of Fig. 8 drills 1 match, guide portion 20
Third cavity diameter it is bigger 0.1-0.2mm than the outer diameter of core bar back segment 19, the outer diameter of core bar back segment 19 is more than core bar leading portion 18
Outer diameter, preferably the outer diameter of core bar back segment 19 be 1-3mm.
As shown in figure 9, the 4th kind of embodiment of drill 1, the drill 1 of drill 1 and Fig. 7 of Fig. 9 are essentially identical.No
Be with part, the diameter of the third cavity of the guide portion 20 of Fig. 9 drills 1 gradually increases from front to back, with the use of
The core bar back segment 19 of 14 truncated cone-shaped of pusher matches, and the diameter of the third cavity of guide portion 20 is than 19 corresponding position of core bar back segment
The big 0.1-0.2mm of outer diameter at place.The a diameter of 1mm of upper bottom surface of core bar back segment 19, a diameter of 2- of bottom surface of core bar back segment 19
3mm.The length of guide portion 20 is not less than the length of core bar leading portion 18, and the preferably length of guide portion 20 is 7-10mm.
As shown in Figure 10, the 7th kind of embodiment of pusher 14, the drill with the 4th kind of embodiment as shown in Figure 9
1 is used in combination.The pusher 14 of pusher 14 and Fig. 5 of Figure 10 is essentially identical.The difference is that the pusher of Figure 10
14 core bar back segment 19 is truncated cone-shaped, and the outer diameter of core bar back segment 19 gradually increases from core bar leading portion 18 to pusher connecting portion 16,
The a diameter of 1mm of upper bottom surface of core bar back segment 19, a diameter of 2-3mm of bottom surface of core bar back segment 19, core bar back segment 19 and Fig. 9 drill
The third cavity of the guide portion 20 of device 1 matches, and the diameter of the third cavity of guide portion 20 is than 19 corresponding position of core bar back segment
The big 0.1-0.2mm of outer diameter.
As shown in figure 11, the 8th kind of embodiment of pusher 14, the drill with the 4th kind of embodiment as shown in Figure 9
1 is used in combination.The pusher 14 of pusher 14 and Fig. 6 of Figure 11 is essentially identical.The difference is that the pusher of Figure 11
14 core bar back segment 19 is truncated cone-shaped, and the outer diameter of core bar back segment 19 gradually increases from core bar leading portion 18 to pusher connecting portion 16,
The a diameter of 1mm of upper bottom surface of core bar back segment 19, a diameter of 2-3mm of bottom surface of core bar back segment 19, core bar back segment 19 and Fig. 9 drill
The third cavity of the guide portion 20 of device 1 matches, and the diameter of the third cavity of guide portion 20 is than 19 corresponding position of core bar back segment
The big 0.1-0.2mm of outer diameter.
Certainly, rigid solid pipe 5 can be cylindrical or square cylindricality, hexagonal cylindricality, octagonal cylindricality etc. other
Shape.The length of rigid solid pipe 5 can be longer than 135mm, can also be shorter than 135mm, but long or too short be unfavorable for rigidity
The grip of solid tubes 5.The outer diameter of rigid solid pipe 5 can be 6~10mm, but the big weight of outer diameter of rigid solid pipe 5 is with regard to big,
It holds and easily tires out, be unfavorable for long-time operation.The shape of drill shank 6 can be disc, and outer diameter can be more than 20mm,
20mm can be less than；Can also be other shapes, such as oval, rectangular, rectangle, triangle.It can be round to rotate handle 8
Cylindricality or rectangular shaped post, square cylindricality, hexagonal cylindricality, octagonal cylindricality etc..The length of rotation handle 8 can be more than
40mm might be less that 40mm.12mm can be more than by rotating the outer diameter of handle 8, might be less that 12mm.Handle 8 is rotated with boring
The distance of hole device shank 6 can be more than 50mm, might be less that 50mm.
Certainly, the angle between pusher core bar 15 and pusher handle 17 can be 90 degree, can also be more than 90 degree,
90 degree, generally 60-120 degree can be less than.It is not easy to manipulate under remaining angle.The shape of pusher connecting portion 16 can be cylinder
Shape or truncated cone-shaped, rectangular shaped post, square cylindricality, triangle cylindricality etc..The size of pusher connecting portion 16 can carry out phase
The adjustment answered, to be suitble to operate in drill head 4.The length of pusher handle can be more than 100mm, might be less that
100mm.The outer diameter of pusher handle can be more than 12mm, might be less that 12mm.The shape of pusher handle can be cylinder
Shape or hexagonal cylindricality, rectangular shaped post, square cylindricality etc..The shape of the core bar back segment 19 of pusher core bar 15 can be
Cylindrical or truncated cone-shaped or rectangular shaped post, square cylindricality, triangle cylindricality, hexagonal cylindricality, octagonal cylindricality etc..
Drill 1 and pusher 14 can also use the processing technologies such as integrated abrasive tool moulding to prepare.
The specifically used method that novel hollow of the present invention bores medical micro fractures instrument is as follows：(1) in open operation state
Under, debridement is carried out to damaged cartilage region；(2) site punched is needed with hollow boring bit anchoring, makes drill perpendicular to cartilage
Section with hammering drilling device shank or can be manually rotated drill rotation handle, until hollow boring bit punctures subchondral bone, have
Marrow blood oozes out；(3) drill is extracted, is released the bone tissue in drill hollow boring bit with pusher；(4) continue positioning of anchor
Point repeats aforesaid operations, until microfrature is completed.The spacing of wells is 4-5mm during operation, can effective protection subchondral bone.
It should be noted that specific embodiment is only the explanation and illustration to technical solution of the present invention, it should not be by it
The restriction to technical solution of the present invention is interpreted as, it is any only to make what is locally changed using the substantive invention content of the present invention, it should
It falls within the scope of protection of the present invention.
Claims (9)
1. a kind of novel hollow bores medical micro fractures instrument, special including subchondral bone can be made to generate the drill (1) of micro fractures
Sign is：The drill (1) is by the sequentially connected circular tube shaped hollow boring bit (2) with the first cavity, drill head
(4), rigid solid pipe (5) and drill shank (6) composition, the drill head (4) are internally provided with the second cavity
(3), strip-shaped groove (7), the first cavity of the hollow boring bit (2), drill head (4) are provided on drill head (4)
The second cavity (3) be connected with strip-shaped groove (7) three, the micro fractures instrument further includes pusher (14), described to push away
Go out device (14) can stretch into that strip-shaped groove (7) is mobile in second cavity (3) of drill head (4) will embedded hollow boring bit
(2) bone tissue in the first cavity is released；
The front end (13) of the hollow boring bit (2) is zigzag or sharp inclined-plane, hollow boring bit (2) and the drill head
(4) it is coaxially arranged, symmetrical rotation handle (8) is provided on the rigid solid pipe (5), the pusher (14) by connecting successively
Pusher core bar (15), pusher connecting portion (16) and pusher handle (17) composition connect, pusher core bar (15) packet
Core bar leading portion (18) and core bar back segment (19) are included, the core bar leading portion (18) is cylinder, core bar leading portion (18) and hollow boring bit
(2) it matches.
2. a kind of novel hollow according to claim 1 bores medical micro fractures instrument, it is characterised in that：The pusher core
With pusher handle (17) at a right angle, the pusher connecting portion (16) is straight rod-shaped or arc to bar (15).
3. a kind of novel hollow according to claim 1 bores medical micro fractures instrument, it is characterised in that：The pusher core
The core bar back segment (19) of bar (15) is cylinder, and the outer diameter of core bar back segment (19) is not less than the outer diameter of core bar leading portion (18).
4. a kind of novel hollow according to claim 1 bores medical micro fractures instrument, it is characterised in that：The drill head
Setting is there are one guide portion (20) between the front end (9) in portion (4) and strip-shaped groove (7) front end, in the guide portion (20)
Between be provided with third cavity, the third cavity is circular through hole, and the core bar back segment (19) and the third of guide portion (20) are empty
Chamber matches.
5. a kind of novel hollow according to claim 4 bores medical micro fractures instrument, it is characterised in that：The core bar back segment
(19) it is cylinder, the outer diameter of core bar back segment (19) is not less than the outer diameter of core bar leading portion (18), the third of the guide portion (20)
Thickness is identical up and down for cavity, and the diameter of the third cavity of guide portion (20) is bigger 0.1-0.2mm than the outer diameter of core bar back segment (19), draws
The length for leading portion (20) is not less than the length of core bar leading portion (18).
6. a kind of novel hollow according to claim 4 bores medical micro fractures instrument, it is characterised in that：The core bar back segment
(19) it is truncated cone-shaped, outer diameter gradually increase from core bar leading portion (18) to pusher connecting portion (16) of core bar back segment (19) is described
The diameter of the third cavity of guide portion (20) gradually increases, and the diameter of the third cavity of guide portion (20) is than core bar back segment (19) phase
The big 0.1-0.2mm of the outer diameter at position is answered, the length of guide portion (20) is not less than the length of core bar leading portion (18).
7. a kind of novel hollow according to claim 1 bores medical micro fractures instrument, it is characterised in that：The drill
(1) and the material of pusher (14) is good 304 stainless steel, 316 stainless steels or titanium alloy, drill (1) and is released
Each connecting component of device (14) is connected using welding manner.
8. a kind of novel hollow according to claim 1 bores medical micro fractures instrument, it is characterised in that：The hollow boring bit
(2) length is 4-5mm, and the outer diameter of hollow boring bit (2) is 0.8-1.5mm, and the internal diameter of hollow boring bit (2) is 0.4-0.8mm, described
The outer diameter of the core bar leading portion (18) of pusher core bar (15) is smaller 0.1mm than the internal diameter of hollow boring bit (2), the length of core bar leading portion (18)
Degree it is longer 1mm than the length of hollow boring bit (2), the drill head (4) be hollow cylinder, the length of drill head (4)
It spends for 45mm, the outer diameter 8mm of drill head (4), the length of the strip-shaped groove (7) is 20mm, strip-shaped groove (7)
Width is 5mm, and the distance of strip-shaped groove (7) front end and drill head (4) front end (9) is 10mm, the pusher core bar
(15) length is 16mm, and the thickness up and down of the pusher connecting portion (16) is identical and section is round, pusher connecting portion
(16) length is 15mm, and the outer diameter of pusher connecting portion (16) is 4mm.
9. a kind of novel hollow according to claim 1 bores medical micro fractures instrument, it is characterised in that：The rigid solid
The length for managing (5) is 135mm, and the outer diameter of rigid solid pipe (5) is 6mm, and the pusher handle (17) is cylindrical, pusher
The length of handle (17) is 100mm, and the outer diameter 12mm of pusher handle (17), the drill shank (6) is disc, described
Discoidal outer diameter is 20mm, and the rotation handle (8) is cylinder, and the length of rotation handle (8) is respectively 40mm, rotates handle
(8) distance of outer diameter 12mm, rotation handle (8) and drill shank (6) is 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510816922.4A CN105286944B (en) | 2015-11-23 | 2015-11-23 | A kind of novel hollow bores medical micro fractures instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510816922.4A CN105286944B (en) | 2015-11-23 | 2015-11-23 | A kind of novel hollow bores medical micro fractures instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105286944A CN105286944A (en) | 2016-02-03 |
| CN105286944B true CN105286944B (en) | 2018-06-29 |
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| CN201510816922.4A Active CN105286944B (en) | 2015-11-23 | 2015-11-23 | A kind of novel hollow bores medical micro fractures instrument |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5556399A (en) * | 1995-02-14 | 1996-09-17 | Huebner; Randall J. | Bone-harvesting drill apparatus and method for its use |
| CN202104980U (en) * | 2011-04-19 | 2012-01-11 | 徐苗 | Bone block hollow drill |
| CN202288395U (en) * | 2011-06-30 | 2012-07-04 | 北京爱康宜诚医疗器材股份有限公司 | Intercondylar bone drill |
| BE1020047A3 (en) * | 2011-07-05 | 2013-04-02 | Janssens Johan | INSTRUMENT TO TAKE A BOTBIOPSY. |
| CN203935241U (en) * | 2014-06-16 | 2014-11-12 | 李万里 | Micro-wound bone taking device |
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| Publication number | Publication date |
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| CN105286944A (en) | 2016-02-03 |
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