CN108403174A - A kind of anchor apparatus and holdfast system of the loose sclerotin of confrontation - Google Patents
A kind of anchor apparatus and holdfast system of the loose sclerotin of confrontation Download PDFInfo
- Publication number
- CN108403174A CN108403174A CN201810761111.2A CN201810761111A CN108403174A CN 108403174 A CN108403174 A CN 108403174A CN 201810761111 A CN201810761111 A CN 201810761111A CN 108403174 A CN108403174 A CN 108403174A
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- holdfast
- threading hole
- thread
- anchor body
- ground anchor
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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
- A61B17/064—Surgical staples, i.e. penetrating the tissue
- A61B17/0642—Surgical staples, i.e. penetrating the tissue for bones, e.g. for osteosynthesis or connecting tendon to bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
- A61B2017/0408—Rivets
Abstract
The invention discloses a kind of anchor apparatus of the loose sclerotin of confrontation, and with two-stage anti-pulling mechanism, wherein first order anti-pulling mechanism is：The anchor apparatus of the loose sclerotin of the confrontation includes the pressurization holdfast being mutually matched by external screw thread and pulling force holdfast, and the pulling force holdfast when the pressurization holdfast pressurizes for bearing opposite force to increase the pulling capacity of anchor apparatus；Second level anti-pulling mechanism is：Full thread structure in the ground anchor body of the pulling force holdfast includes the cortex bone thread positioned at the cancellous threads of ground anchor body front and positioned at ground anchor body rear portion, and the screw pitch of the cancellous threads is big compared with the screw pitch of the cortex bone thread.Due to two-stage anti-pulling mechanism so that the anchor apparatus of the loose sclerotin of confrontation provided by the invention has preferable pulling capacity, is especially suitable for the patient of osteoporosis.Meanwhile the invention also discloses a kind of holdfast systems of the loose sclerotin of confrontation.
Description
Technical field
The present invention relates to the anchor apparatus and holdfast system of technical field of medical equipment more particularly to a kind of loose sclerotin of confrontation
System.
Background technology
Detaching completely or partially for ligament, tendon and/or other soft tissues and internal association skeleton is relatively common damage
Wound, especially in sportsman.It is this kind of damage be typically these tissue be applied in excess pressure as a result, for example, because fall,
It is sent out in Overexertion or accident resulted in many any other situations during production activity, sports tournament
It is raw.
Currently, clinically for the case for case and some parts separation being kept completely separate generally by band line anchor
Nail reconnects soft tissue and bone, and holdfast is embedded to stationary burst tendon tissue in sclerotin, to achieve the purpose that tendon-bone healing.
However existing band line holdfast is particular for osteoporosis patient, for the patient of osteoporosis, due to it
Bone density is small, and holdfast is during implantation, and with the constantly loose loss of sclerotin, the stretching resistance of holdfast gradually weakens, until loosening.
Thus, it is necessary to band line holdfast is redesigned.
Invention content
The present invention proposes a kind of anchor apparatus and holdfast system fighting loose sclerotin, to increase pulling capacity, keeps it suitable
Patient for osteoporosis.
To solve the above-mentioned problems, the present invention provides a kind of anchor apparatus of the loose sclerotin of confrontation, the loose sclerotin of the confrontation
Anchor apparatus there is two-stage anti-pulling mechanism, wherein first order anti-pulling mechanism is：The anchor apparatus of the loose sclerotin of the confrontation
Include the pressurization holdfast being mutually matched by external screw thread and pulling force holdfast, the pulling force holdfast is used to pressurize in the pressurization holdfast
When bear opposite force to increase the pulling capacity of anchor apparatus；
The pressurization holdfast includes respectively ground anchor body with the pulling force holdfast, and the ground anchor body is equipped with prolongs along its longitudinal direction
The inner cavity stretched, and suture wire connection structure is additionally provided in the ground anchor body, the suture wire connection structure is arranged described
The front end of ground anchor body, so that being provided with full thread structure on the outside of the ground anchor body；
Full thread structure in the ground anchor body of the pressurization holdfast includes the first screw thread, and flight pitch is uniform；
Second level anti-pulling mechanism is：Full thread structure in the ground anchor body of the pulling force holdfast includes before being located at ground anchor body
The cancellous threads in portion and cortex bone thread positioned at ground anchor body rear portion, the screw pitch cortex bone of the cancellous threads
The screw pitch of screw thread is big.
In one embodiment of the invention, the screw pitch of the cancellous threads and the cortex bone thread is 0.8-
1.1mm。
In one embodiment of the invention, the cancellous threads are equipped with one start screw, and the cortex bone thread is equipped with
Double thread；The double thread includes the second screw thread and the third screw thread that extends between second screw thread；The single head
Screw thread is connected together to a continuous screw thread with second screw thread or the third screw thread.
In one embodiment of the invention, the cancellous threads are equipped with one start screw with the cortex bone thread.
In one embodiment of the invention, the cortex bone thread is institute along the length of corresponding ground anchor body longitudinal direction
Cancellous threads and the cortex bone thread are stated along a quarter of the sum of the length of ground anchor body longitudinal direction to one third.
In one embodiment of the invention, the suture wire connection structure includes being arranged the of the side of ground anchor body
One threading hole, the second threading hole, third threading hole and the 4th threading hole, first threading hole is with second threading hole same
One side, the third threading hole and the 4th threading hole are threaded in same side, first threading hole with the third
Hole is opposite, and second threading hole is opposite with the 4th threading hole, first threading hole, second threading hole, described
Third threading hole and the 4th threading hole are connected with the inner cavity.
In one embodiment of the invention, the center of first threading hole and the third threading hole is to ground anchor body
The distance of front end is 5-6mm.
In one embodiment of the invention, the center of second threading hole and the 4th threading hole is to ground anchor body
The distance of front end is 8-10mm.
In one embodiment of the invention, the thread form angle of the cancellous threads and the cortex bone thread be 30 °-
60°。
In one embodiment of the invention, the front of the ground anchor body is taper, and the cancellous threads extend to
The cone angle of the front end of the ground anchor body, the front end of the ground anchor body is 45 ° -60 °.
In one embodiment of the invention, the longitudinal cross-section of the inner cavity is non-circular.
A kind of holdfast system of the loose sclerotin of confrontation, includes the holdfast dress of driving instrument and the above-mentioned loose sclerotin of confrontation
It sets, the driving instrument is matched with the inner cavity.
The present invention due to using the technology described above, is allowed to compared with prior art, have the advantages that following and actively imitate
Fruit：
1）The anchor apparatus of the loose sclerotin of confrontation provided by the invention passes through what is be mutually matched with two-stage anti-pulling mechanism
Pressurization holdfast and pulling force holdfast form first order anti-pulling mechanism, and pulling force holdfast is used to bear opposite force when pressurizeing holdfast pressurization
To increase the pulling capacity of anchor apparatus；By the way that the cancellous bone positioned at ground anchor body front is arranged in the ground anchor body of pulling force holdfast
Screw thread and cortex bone thread positioned at ground anchor body rear portion, by the screw pitch of cortex bone thread be arranged than cancellous threads screw pitch
It is small, second level anti-pulling mechanism is formed, to further increase the pulling capacity of anchor apparatus.So that confrontation provided by the invention is dredged
The anchor apparatus of spongy bone has preferable pulling capacity, is especially suitable for the patient of osteoporosis.
2）In the ground anchor body of the anchor apparatus of the loose sclerotin of confrontation provided by the invention, pressurization holdfast and pulling force holdfast
Suture wire connection structure is arranged in the front end of ground anchor body, so that being provided with full thread structure on the outside of ground anchor body, works as anchor
After spike devices implantation, as in Bone Ingrowth suture wire connection structure, the pulling capacity of the anchor apparatus further increases.
3）The anchor apparatus of the loose sclerotin of confrontation provided by the invention, by the way that mutually matched pressurization holdfast and pulling force is arranged
Holdfast, entire anchor apparatus have higher stability, can anti-rotation, prevent from cutting out, be particularly suitable for the patient of osteoporosis.
Description of the drawings
Fig. 1 is the structural schematic diagram of the anchor apparatus of the loose sclerotin of confrontation provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the helicitic texture for the pulling force holdfast that one embodiment of the invention provides；
Fig. 3 is the schematic diagram of the helicitic texture for the pulling force holdfast that another embodiment of the present invention provides.
Specific implementation mode
The anchor apparatus to the loose sclerotin of confrontation proposed by the present invention and holdfast system below in conjunction with the drawings and specific embodiments
System is described in further detail.According to following explanation and claims, advantages and features of the invention will become apparent from.It needs to illustrate
, attached drawing is all made of very simplified form and uses non-accurate ratio, only to it is convenient, lucidly aid in illustrating this
The purpose of inventive embodiments.
In the prior art, or band line holdfast screw-in power is very big；It is little to screw in power, but pulling capacity is smaller, band line anchor
It is unable to reach good balance between the screw-in power and pulling capacity of nail.By the study found that the existing outer wall with line holdfast
The screw pitch of screw thread is set as almost the same, and screw pitch is too small to be caused to screw in difficulty, and screw pitch can then lead to greatly very much drawing after screwing in
Power is smaller, so that being unable to reach good balance between screw-in power and pulling capacity with line holdfast.Also, sclerotin is dredged
The patient of pine, since bone density is small, holdfast is during implantation, and with the constantly loose loss of sclerotin, holdfast stretching resistance gradually weakens,
Until loosening.It is existing to carry out special design without the patient for osteoporosis with line holdfast.
In order to solve the above technical problems, the present invention proposes a kind of anchor apparatus of the loose sclerotin of confrontation, the confrontation
The anchor apparatus of loose sclerotin has two-stage anti-pulling mechanism, and wherein first order anti-pulling mechanism is：The loose sclerotin of the confrontation
Anchor apparatus includes the pressurization holdfast being mutually matched by external screw thread and pulling force holdfast, and the pulling force holdfast is used in the pressurization
Holdfast bears opposite force to increase the pulling capacity of anchor apparatus when pressurizeing；
The pressurization holdfast includes respectively ground anchor body with the pulling force holdfast, and the ground anchor body is equipped with prolongs along its longitudinal direction
The inner cavity stretched, and suture wire connection structure is additionally provided in the ground anchor body, the suture wire connection structure is arranged described
The front end of ground anchor body, so that being provided with full thread structure on the outside of the ground anchor body；
Full thread structure in the ground anchor body of the pressurization holdfast includes the first screw thread, and flight pitch is uniform；
Second level anti-pulling mechanism is：Full thread structure in the ground anchor body of the pulling force holdfast includes before being located at ground anchor body
The cancellous threads in portion and cortex bone thread positioned at ground anchor body rear portion, the screw pitch cortex bone of the cancellous threads
The screw pitch of screw thread is big.
The anchor apparatus of the loose sclerotin of confrontation provided by the invention, with two-stage anti-pulling mechanism, by being mutually matched
Pressurization holdfast and pulling force holdfast form first order anti-pulling mechanism, pulling force holdfast is used to bear when pressurizeing holdfast pressurization reversed
Power is to increase the pulling capacity of anchor apparatus；By the way that the spongiosa positioned at ground anchor body front is arranged in the ground anchor body of pulling force holdfast
Bone thread and cortex bone thread positioned at ground anchor body rear portion, by the screw pitch of cortex bone thread be arranged than cancellous threads spiral shell
Away from small, formation second level anti-pulling mechanism, to further increase the pulling capacity of anchor apparatus.Make confrontation provided by the invention
The anchor apparatus of loose sclerotin has preferable pulling capacity, is especially suitable for the patient of osteoporosis.
With reference to specific embodiment, the invention will be further described.
Embodiment 1
It please refers to Fig.1 and Fig. 2, as shown in Figures 1 and 2, the anchor apparatus packet of the loose sclerotin of confrontation provided in an embodiment of the present invention
The pressurization holdfast 10 being mutually matched by external screw thread and pulling force holdfast 20 are included, pressurization holdfast 10 includes respectively with pulling force holdfast 20
Ground anchor body（If pulling force holdfast 20 includes ground anchor body 25, the ground anchor body of pressurization holdfast 10 does not indicate）, set in ground anchor body
Have along the inner cavity that it is longitudinally extended, and is additionally provided with suture wire connection structure in ground anchor body（Label 12,23 in Fig. 1 is distinguished
The suture wire connection structure for representing the suture wire connection structure being arranged on pressurization holdfast 10 and being arranged on pulling force holdfast 20）, suture
Wire connection structure is arranged in the front end of ground anchor body, so that being provided with full thread structure on the outside of ground anchor body.
Wherein, the full thread structure in the ground anchor body of pressurization holdfast 10 includes the first screw thread 11, and flight pitch is uniform；
Full thread structure in the ground anchor body of pulling force holdfast 20 includes positioned at the cancellous threads 22 of ground anchor body front and positioned at anchor
The cortex bone thread 21 of rear body is followed closely, the screw pitch of cancellous threads 22 is big compared with the screw pitch of cortex bone thread 21；And spongiosa murices
The screw pitch of line 22 and cortex bone thread 21 is 0.8-1.1mm.
The anchor apparatus of the loose sclerotin of the confrontation has two-stage anti-pulling mechanism, wherein passes through the pressurization anchor being mutually matched
Nail 10 and pulling force holdfast 20 form first order anti-pulling mechanism, and pulling force holdfast 20 is used to bear when the holdfast 10 that pressurizes pressurizes reversed
Power is to increase the pulling capacity of anchor apparatus；By the way that the pine positioned at ground anchor body front is arranged in the ground anchor body of pulling force holdfast 20
Matter bone thread 22 and cortex bone thread 21 positioned at ground anchor body rear portion, are arranged the screw pitch of cortex bone thread 21 to compare cancellous bone
The screw pitch of screw thread 22 is small, second level anti-pulling mechanism is formed, to further increase the pulling capacity of anchor apparatus.So that the present invention
The anchor apparatus of the loose sclerotin of confrontation of offer has preferable pulling capacity, is especially suitable for the patient of osteoporosis.
Wherein, ground anchor body can have various structures, shape and size.In an exemplary embodiment, the anchor
Nail ontology is configured to implantation and beats in the bone hole on bone, and more preferably its size and shape allow it to completely penetrate through skin
The thickness of matter bone.In the illustrated embodiment, the ground anchor body has generally elongated cylindrical shape, has along the holdfast
The inner cavity that ontology is longitudinally extended.The hollow structure of ground anchor body allows driving instrument to be inserted into drive retainer body into the marrow
In.
As shown in Fig. 2, in the present embodiment, the cancellous threads 22 are equipped with one start screw 221, the cortex bone thread
21 are equipped with double thread；The double thread includes the second screw thread 211 and the third spiral shell that extends between second screw thread 211
Line 212；The one start screw 221 is connected together to a continuous spiral shell with second screw thread 211 or the third screw thread 212
Line.The structure setting may make the cancellous threads 22 and the screw-in of the junction of the cortex bone thread 21 more smooth.Institute
Stating one start screw 221 can also disconnect with second screw thread 211 or the third screw thread 212.The screw pitch of the one start screw 221
It can be identical or different with the screw pitch of second screw thread 211 or the third screw thread 212.
The cortex bone thread 21 each along the longitudinal length of corresponding ground anchor body 25 be the cancellous threads 22 with
The cortex bone thread 21 is along a quarter of the sum of the longitudinal length of ground anchor body 25 to one third.Because of the spongiosa of human body
Bone and the thickness of cortex bone are than about 3:1 to 2：1, by the cortex bone thread 21 along the longitudinal length of the ground anchor body 25
It is set as above-mentioned length range and can guarantee that all cortex bone threads are each attached in cortex bone, it is possible to increase pulling capacity.
Suture wire connection structure is illustrated by taking the suture wire connection structure on pulling force holdfast 20 as an example, pressurize anchor
Suture wire connection structure on nail 10 is similar, because without repeating.Suture wire connection structure 23 on pulling force holdfast 20 wraps
It includes and the first threading hole 231 in the side of ground anchor body 25, the second threading hole 232, third threading hole and the 4th threading hole is set,
First threading hole 231 is with second threading hole 232 in same side, the third threading hole and the 4th threading hole
In same side, first threading hole 231 is opposite with the third threading hole, second threading hole 232 and the described 4th
Threading hole is opposite, first threading hole 231, second threading hole 232, the third threading hole and the 4th threading hole
It is connected with the inner cavity.First threading hole 231, the second threading hole 232, third threading hole and the 4th threading hole shape can
For round, ellipse or other shapes.It is shiny surface between two threading holes of same side, which can be less than the anchor
Follow closely the side or highly consistent with the side of the ground anchor body 25 of ontology 25.
First threading hole 231 is 5-6mm at a distance from the center of the third threading hole to 25 front end of ground anchor body.
Before first threading hole 231 and the hypotelorism of center to 25 front end of the ground anchor body of the third threading hole can cause
The insufficient strength for holding screw thread, when screwing in, anchor apparatus is easily damaged；First threading hole 231 and the third threading hole
The hypertelorism of center to 25 front end of the ground anchor body may then make the first threading hole 231 and the close pine of the third threading hole
Matter bony site can not play and increase drawing force effect.And first threading hole 231 and the center of the third threading hole are arrived
The distance of 25 front end of the ground anchor body is set as 5-6mm, not only acts as and increases drawing force effect, also so that anchor apparatus is not easy
Damage.
Second threading hole 232 is 8- at a distance from the center to 25 front end of ground anchor body of the 4th threading hole
10mm.This distance range can guarantee that the second threading hole 232, in the middle front part of ground anchor body 25, can make with the 4th threading hole
The most of Grafting Cancellous Bone Bolt bits fallen on bone when ground anchor body screws in are packed into the second threading hole 232 and the 4th threading hole
It is interior, the gap of the second threading hole 232 and the 4th threading hole and suture can be reduced, make suture it is more firmly fixed described in
In ground anchor body, and Grafting Cancellous Bone Bolt bits are generally not exclusively fallen, and one end is connect with cancellous bone, and the other end is embedded in the second threading hole
In 232 or described 4th threading holes, therefore the pulling capacity of anchor apparatus can be further increased.
The thread form angle of the cancellous threads 22 and the cortex bone thread 21 is 30 ° -60 °.The thread form angle of screw thread is set
Be formed by when being set to 30 ° -60 ° cusp can guarantee screw in when cusp bone tissue can be easily cut in bone so that screw in quickly,
Easily, reliable pulling capacity can be provided after screwing in.
The front of the ground anchor body 25 is taper, is provided with tapered thread 24；The cancellous threads 22 extend
To the front end of the ground anchor body 25, the cone angle of the front end of the ground anchor body 25 is 45 ° -60 °.The cone angle of the range can be protected
Medical personnel can be screwed in soft tissue fixer in bone in a manner of self tapping in card operation.
The longitudinal cross-section of the inner cavity is non-circular, this construction of the inner cavity is corresponding with driving instrument non-circular
Complementary configuration so that driving instrument can be driven after being inserted into the inner cavity ground anchor body into the marrow.
The diameter of the ground anchor body of pulling force holdfast 20 can be 6.5 mm, 5.5 mm, 5.0 mm, 4.5 mm, 3.5mm or
2.8mm.The diameter of the ground anchor body of pressurization holdfast 10 can be 4.5 mm, 3.5 mm or 2.8mm.
In use, prior to squeezing into pulling force holdfast 20 in the bone tissue that need to be anchored, then be close to pulling force holdfast 20 be screwed into it is small plus
Holdfast 10 is pressed, since pulling force holdfast 20 is identical as the pressurization helical pitch of holdfast 10, by this wheel occlusal principle, is axially being screwed into pressurization
While holdfast 10, pulling force holdfast 20 drives bone reversely to retreat, to realize pressurization；Specifically, pulling force holdfast 20 with plus
The cooperation of holdfast 10 is pressed, the linear pressurization of gear sample can be carried out to bone block, while pulling force holdfast 20 is combined with the holdfast 10 of pressurizeing
Interlocking design can reduce cutting out for pulling force holdfast 20.
Embodiment 2
The present embodiment and embodiment 1 difference lies in：
Referring to Fig. 3, the cancellous threads 32 and the cortex bone thread 31 are equipped with one start screw.Specially：The pine
Matter bone thread 32 is equipped with the 4th screw thread 321, and the cortex bone thread 31 is equipped with the 5th screw thread 311, the screw pitch of the 4th screw thread 321 compared with
The screw pitch of 5th screw thread 311 is big.
The other aspects of embodiment 2 are same as Example 1, and details are not described herein.
The present invention also provides a kind of holdfast systems of the loose sclerotin of confrontation, which includes driving instrument and above-described embodiment
1 or embodiment 2 described in the loose sclerotin of confrontation anchor apparatus, the driving instrument can match with the inner cavity.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, present invention neck
Any change, the modification that the those of ordinary skill in domain does according to the disclosure above content, belong to the protection domain of claims.
Claims (12)
1. a kind of anchor apparatus of the loose sclerotin of confrontation, which is characterized in that the anchor apparatus of the loose sclerotin of the confrontation has two-stage
Anti-pulling mechanism, wherein first order anti-pulling mechanism are：The anchor apparatus of the loose sclerotin of the confrontation includes mutual by external screw thread
Matched pressurization holdfast and pulling force holdfast, the pulling force holdfast when the pressurization holdfast pressurizes for bearing opposite force to increase
The pulling capacity of anchor apparatus；
The pressurization holdfast includes respectively ground anchor body with the pulling force holdfast, and the ground anchor body is equipped with prolongs along its longitudinal direction
The inner cavity stretched, and suture wire connection structure is additionally provided in the ground anchor body, the suture wire connection structure is arranged described
The front end of ground anchor body, so that being provided with full thread structure on the outside of the ground anchor body；
Full thread structure in the ground anchor body of the pressurization holdfast includes the first screw thread, and flight pitch is uniform；
Second level anti-pulling mechanism is：Full thread structure in the ground anchor body of the pulling force holdfast includes before being located at ground anchor body
The cancellous threads in portion and cortex bone thread positioned at ground anchor body rear portion, the screw pitch cortex bone of the cancellous threads
The screw pitch of screw thread is big.
2. fighting the anchor apparatus of loose sclerotin as described in claim 1, which is characterized in that cancellous threads and described
The screw pitch of cortex bone thread is 0.8-1.1mm.
3. fighting the anchor apparatus of loose sclerotin as described in claim 1, which is characterized in that the cancellous threads are equipped with single
Head thread, the cortex bone thread are equipped with double thread；The double thread include the second screw thread and second screw thread it
Between the third screw thread that extends；The one start screw is connected together to a continuous spiral shell with second screw thread or the third screw thread
Line.
4. fighting the anchor apparatus of loose sclerotin as described in claim 1, which is characterized in that the cancellous threads with it is described
Cortex bone thread is equipped with one start screw.
5. as Claims 1-4 any one of them fights the anchor apparatus of loose sclerotin, which is characterized in that the cortex bone
Screw thread is the cancellous threads and the cortex bone thread along ground anchor body along the length of corresponding ground anchor body longitudinal direction
The a quarter of the sum of longitudinal length is to one third.
6. as Claims 1-4 any one of them fights the anchor apparatus of loose sclerotin, which is characterized in that the suture
Connection structure includes that the first threading hole in the side of ground anchor body, the second threading hole, third threading hole and the 4th threading is arranged
Hole, first threading hole exist with second threading hole in same side, the third threading hole and the 4th threading hole
Same side, first threading hole is opposite with the third threading hole, second threading hole and the 4th threading hole phase
It is right, first threading hole, second threading hole, the third threading hole and the 4th threading hole with the inner cavity phase
Connection.
7. fighting the anchor apparatus of loose sclerotin as claimed in claim 6, which is characterized in that first threading hole with it is described
The distance of the center of third threading hole to ground anchor body front end is 5-6mm.
8. fighting the anchor apparatus of loose sclerotin as claimed in claim 6, which is characterized in that second threading hole with it is described
The distance of the center of 4th threading hole to ground anchor body front end is 8-10mm.
9. the anchor apparatus of the loose sclerotin of confrontation according to any one of claims 1-4, which is characterized in that the spongiosa murices
Line and the thread form angle of the cortex bone thread are 30 ° -60 °.
10. the anchor apparatus of the loose sclerotin of confrontation according to any one of claims 1-4, which is characterized in that the holdfast sheet
The front of body is taper, and the cancellous threads extend to the front end of the ground anchor body, the cone of the front end of the ground anchor body
Angle is 45 ° -60 °.
11. the anchor apparatus of the loose sclerotin of confrontation according to any one of claims 1-4, which is characterized in that the inner cavity
Longitudinal cross-section is non-circular.
12. a kind of holdfast system of the loose sclerotin of confrontation, which is characterized in that including driving instrument and as claim 1-11 appoints
The anchor apparatus of the loose sclerotin of confrontation described in one, the driving instrument are matched with the inner cavity.
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| CN201810761111.2A CN108403174B (en) | 2018-07-12 | 2018-07-12 | A kind of anchor apparatus and holdfast system of the loose sclerotin of confrontation |
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| US20110208252A1 (en) * | 2008-08-20 | 2011-08-25 | Medizinische Universitaet Wien | Bone screw set |
| CN201668489U (en) * | 2010-04-23 | 2010-12-15 | 常州奥斯迈医疗器械有限公司 | Medical lag screw |
| CN104997540A (en) * | 2015-08-18 | 2015-10-28 | 上海凯利泰医疗科技股份有限公司 | Soft tissue fixator for orthopedic operation and soft tissue fixator assembly |
| CN106419981A (en) * | 2016-11-25 | 2017-02-22 | 上海市第六人民医院 | Novel medical rivet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108403174B (en) | 2018-11-02 |
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Address after: 201201 Shanghai Pudong New Area Zhangjiang hi tech Park East area 528, 23, 2 floor. Patentee after: SHANGHAI KINETIC MEDICAL Co.,Ltd. Patentee after: Shanghai ligetai Medical Equipment Co.,Ltd. Address before: 201201 Shanghai Pudong New Area Zhangjiang hi tech Park East area 528, 23, 2 floor. Patentee before: SHANGHAI KINETIC MEDICAL Co.,Ltd. Patentee before: SHANGHAI BOJIN KAILITAI MEDICAL TECHNOLOGY CO.,LTD. |