CN104905859B - For the fixing device of Cruciate ligament reconstruction, fixing means and application method - Google Patents
For the fixing device of Cruciate ligament reconstruction, fixing means and application method Download PDFInfo
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- CN104905859B CN104905859B CN201510377194.1A CN201510377194A CN104905859B CN 104905859 B CN104905859 B CN 104905859B CN 201510377194 A CN201510377194 A CN 201510377194A CN 104905859 B CN104905859 B CN 104905859B
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0805—Implements for inserting tendons or ligaments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0817—Structure of the anchor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0817—Structure of the anchor
- A61F2002/0841—Longitudinal channel for insertion tool running through the whole tendon anchor, e.g. for accommodating bone drill, guidewire
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0847—Mode of fixation of anchor to tendon or ligament
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- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
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- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
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- Transplantation (AREA)
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- Prostheses (AREA)
Abstract
The invention discloses a kind of for the fixing device of Cruciate ligament reconstruction, fixing means and application method, the fixing device includes knock-in tack and expandable nail set, in the non-expanded state, the circumferential lateral surface of the set body is radially-inwardly recessed formed with four axially extending grooves, and ligament beam splitting is realized by the groove；In the expanded state, the knock-in tack is plugged by the opening is fixed in the set body, and for the groove in the presence of the knock-in tack, radially extruding realizes that expansion is fixed.The present invention both can ensure that 360 degree of even inflations of expandable nail set, and can avoids the rupture that expandable nail covers, the cutting that will not be caused in ligament reconstructive operation to transplanting tendon is realized simultaneously, can radial compression point four beams carry out effectively fixed, and there is good fixed effect, can realize so that transplanting tendon and the comprehensive engagement of bone road, tendon and symphysis can further be promoted, meet the operation custom of doctor, it is easy to use, without additional studies.
Description
Technical field
The present invention relates to the technical field of medical bio internal fixation device, more particularly to it is a kind of for Cruciate ligament reconstruction
Fixing device, fixing means and application method.
Background technology
Ligamentaum cruciatum is the important feature for maintaining knee joint stable, after the damage of ligamentaum cruciatum, fracture, if malpractice
Instability of knee can be caused, then accelerate the regression of articular cartilage and meniscus, the generation of increase joint other structures damage
Probability, cause patient's daily routines to be limited, and gradually cause the decline of self-care ability.
With the development of arthroscopic techniques, before having become treatment using transplanting tendon Reconstruct anterior cruciate ligament by arthroscopy
The Main Means of cruciate ligament.The fixation of transplanting tendon is most important link in Healing in Anterior Cruciate Ligament Reconstruction operation, and
Most weak link.Good fixation can meet early postoperation motion, muscular training and the requirement born a heavy burden, and contribute to graft muscle
Tendon merges with bone.
At present, ligamentaum cruciatum operation is consolidated usually using absorbable interference screw fixation or Bone condensing nail to tendon graft
Fixed, technical problem existing for these most of nails is that absorbable interference screw fixation causes cutting to wear to tendon graft, enters one
Step have impact on the tensile strength and tendon and symphysis of tendon；, can not be with marrow road and Bone condensing is followed closely due to surface relative smooth
It is close to form extruding, fixed effect is not ideal enough.
By retrieval, applicants have discovered that Chinese Patent No. 201410128124.8 discloses a kind of absorbable compound boundary
The screw and preparation method in face, its screw, it is made up of screw cap, screw rod, head of screw connector, gene thin layer, screw rod outer rim is set
There is tapping screw thread, gene thin layer is covered in thread surface.Its screw easily causes cutting to grind tendon graft as described above
Damage, further have impact on the tensile strength and tendon and symphysis of tendon, also extruding can not be formed with marrow road closely, fixed effect
Fruit is not ideal enough.
Chinese Patent No. 201120077535.0 discloses Allogenous cortical bone squeezing nail, its front end in coniform,
There are 4 annular grooves on nail body surface, and nail afterbody is cylindrical, has a circular thread eye to run through the whole rivet nut longitudinal axis.Allogeneic
Cortex Bone condensing nail is inserted after osseous tunnel between tunnel wall in state is snapped, and osseous tunnel wall is more stepped up with extruding nail combination
It is close, and reach extruding with tendon graft and fix, effectively prevent caused by cortex hangs fix outside " pendulum effect ", prevent
Only tunnel widens one's influence tendon-knitting；The ring-shaped groove of nail body makes extruding nail will not fall off in articular cavity, and will not be to flesh
Tendon graft causes any damage.Bone condensing nail still can not form extruding with marrow road closely, and fixed effect is not ideal enough.
To realize that extruding is close, Chinese Patent No. 201310056296.4 discloses a kind of expansion type extruding nail, including
Expansion type extruding nail body, eccentric band tooth spiral bull stick, expansion link, adjustable spring and lock-screw；Nail body is extruded in expansion type
Side is provided with a screw thread stepped hole, and expansion type extruding nail body opposite side is provided with eccentric band tooth spiral bull stick installation notch, partially
Its central band tooth spiral bull stick installation notch are provided at both ends with positioning hole；Eccentric band tooth spiral bull stick one side is shiny surface, and eccentric band tooth spiral turns
Bar another side is the band flank of tooth, and locking slot is provided with the middle part of eccentric band tooth spiral bull stick, and eccentric band tooth spiral bull stick is plugged in eccentric band tooth
In swingle installation notch, the eccentric rotating shaft set with tooth spiral bull stick upper and lower end plugs extrudes nail both ends positioning hole in expansion type
It is interior；Adjustable spring is enclosed on expansion link, and expansion link plugs to be followed closely in the middle part of body in screw thread stepped hole, using lock-screw pressure in extruding
Tight expansion link.
Chinese Patent No. 201020237483.4 discloses a kind of Medical expansion interface bolt, including expansion sleeve and interior
Core screw, the expansion sleeve are divided into two parts of cannula tip and expansion pad, are with coronal top surface at the top of described sleeve pipe
Cylinder, cannula tip traversed to through the ligament duct of ligament, the coronal-plane center of sleeve pipe is longitudinally opened downwards
There is device for posting duct, the expansion pad is that internal diameter is less than the diameter of inner core screw and has the hollow circuit cylinder of fracture breach,
The inwall of expansion pad has the screw thread that can be matched with the screw thread of inner core screw, and the expansion pad is fixed under cannula tip
Side.The inner core screw of the use is designed using saw-tooth thread, can only be entered by way of rotation in expansion sleeve, therefore nothing
Method ensures that the interior outer shaft in precession path is collinear so that has deviation to the squeeze pressure of expansion sleeve, can not smoothly expand.Secondly,
According to the flexible nature of knee articulation, after prolonged activity, the internal and external threads of expansion sleeve and inner core screw, which coordinate, to be held
Easily loosen, cause fixed effect to be had a greatly reduced quality.
Therefore, the applicant is directed to developing a kind of for the fixing device of Cruciate ligament reconstruction, fixing means and use
Method, realizing will not cause in ligament reconstructive operation to transplanting the cutting of tendon, while can realize extruding beam splitting, and have
Good fixed effect.
The content of the invention
The purpose of the present invention, exactly propose a kind of for the fixing device of Cruciate ligament reconstruction, fixing means and user
Method, realizing will not cause in ligament reconstructive operation to transplanting the cutting of tendon, while can realize extruding beam splitting, and with good
Good fixed effect.
The present invention is in order to solve the above technical problems, provide a kind of fixing device for Cruciate ligament reconstruction, it includes
Knock-in tack and expandable nail set, one end of expandable nail set be nail tip shape, and the other end is opening, the set that the expandable nail covers as
Tubulose, the convex ring body that the circumferential lateral surface radially outwardly projecting for covering body is parallel to each other formed with multi-turn.
In the non-expanded state, the circumferential lateral surface of the set body is radially-inwardly recessed axially extending recessed formed with four
Groove, ligament beam splitting is realized by the groove；
In the expanded state, the knock-in tack is plugged by the opening is fixed in the set body, and the groove is in institute
In the presence of stating knock-in tack, radially extruding realizes that expansion is fixed.
The present invention is used for the fixing device of Cruciate ligament reconstruction by the cooperation of above-mentioned special shape structure, optimizes radially
Pressure is distributed and power conduction, both can ensure that 360 degree of even inflations of expandable nail set, and can avoids the rupture that expandable nail covers, simultaneously
Realize the cutting that will not be caused in ligament reconstructive operation to transplanting tendon, can radial compression point four beams carry out it is effectively fixed,
And there is good fixed effect.
Preferably, one end of the expandable nail set nail tip shape offers first through hole along wherein axis direction, it is described to squeeze into
Nail offers the second through hole along wherein axis direction, under the swelling state, the first through hole and second through hole
In on same straight line.
Above-described first through hole and the second through hole change existing lateral perforate mode, use axial aperture knot instead
Structure, effectively reduce the operation difficulty that suture is worn.
Preferably, the expandable nail set is by PEEK (polyether-ether-ketone, English name polyetheretherketone) material
It is made.
Preferably, the knock-in tack is made by PEEK materials.
It is preferred that PEEK materials make expandable nail set and knock-in tack respectively, PEEK toughnesss of material and rigidity can be effectively utilized
The characteristics of having both and obtaining balance, and PEEK materials according to as above enlightenment and are taught the excellent endurance feature of alternate stress
Lead, be integrally formed the expandable nail set for producing inflatable respectively and rigid knock-in tack, can be directly using molding, transfer modling
Or the method machine-shaping of the processing plastics such as injection moulding, simple and fast is made, and the structure being molded can preferably meet this
Invent the use demand of different parts.
Preferably, the adjacent angle between four grooves is equal, the symmetrical periphery for being formed at the set body
On side.
Preferably, the knock-in tack is cylinder or cone.
Preferably, the knock-in tack is made up of coniform sophisticated, round table-like stage casing and cylindric tail end, it is described it is round table-like in
The minimum end face of section diameter dock with the coniform sophisticated bottom surface, the end face of the round table-like stage casing diameter maximum and
The end face docking of the cylindric tail end, and the diameter of each interface is equal.
The present invention also proposes a kind of fixing means for Cruciate ligament reconstruction, and it comprises the following steps：
Step 1: establishing bone passage in joint, the transplanting tendon of reconstruction is implanted into；
Step 2: using ligamentum cruciatum ligamentopexis, ligament is divided into four beams, selected described in claim any one of 1-7
Fixing device, it is sent into the bone passage, and is ensured the transplanting tendon beam splitting with sending nail instrument to cover the expandable nail
In four grooves of expandable nail set；
Step 3: the knock-in tack is squeezed into the set body of the expandable nail set, work of the groove in the knock-in tack
Under, radially extrude, after expandable nail set expansion completely, realize and the transplanting tendon is fixedly secured.
The present invention also proposes a kind of application method of fixing device, and the fixing device is above-mentioned fixing device, and it makes
Comprised the following steps with method：
Step 1: it is sent into by sending nail instrument to cover the expandable nail in specified location；
Step 2: the knock-in tack is squeezed into the set body of the expandable nail set, make the groove in the knock-in tack
Effect is extruded outwardly, and the expandable nail set is changed into the swelling state by the unswollen state, realizes the expansion
Nail set radially fix by expansion.
In summary, the present invention be used for Cruciate ligament reconstruction fixing device, fixing means and application method also include with
Subsequent point or several beneficial effects：
1st, the present invention can reduce the lengthwise movement (bungee jumping campaign) and transverse movement (rain brush effect) between transplanting tendon-bone road.
2nd, the present invention has the characteristics of fixed, and is avoided that cutting of the fixing device to transplanting tendon, to part
Destruction of bone is relatively small.
3rd, the present invention can be realized so that transplant tendon and the comprehensive engagement of bone road, can further promote tendon and bone more
Close.
4th, the present invention further promotes operation easy for installation, and patient's pain can be effectively reduced during use, is easy to art
After recover.
5th, operation at present uses the fixed form that transplanting tendon is divided into four bursts of formulas, what fixing device of the invention proposed
The groove design of four sides axial depression of the expandable nail set with inflatable, meet the operation custom of doctor, it is easy to use,
Without additional studies.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 is the dimensional structure diagram of specific embodiment fixing device in the non-expanded state.
Fig. 2 is another dimensional structure diagram of specific embodiment fixing device in the non-expanded state.
Fig. 3 is the dimensional structure diagram of specific embodiment fixing device in the expanded state.
Fig. 4 is another dimensional structure diagram of specific embodiment fixing device in the expanded state.
Fig. 5 is the structural front view of specific embodiment fixing device in the expanded state.
Fig. 6 is the structure upward view of specific embodiment fixing device in the expanded state.
Fig. 7 is the dimensional structure diagram of specific embodiment expandable nail set in the non-expanded state.
Fig. 8 is another dimensional structure diagram of specific embodiment expandable nail set in the non-expanded state.
Fig. 9 is specific embodiment fixing device application process schematic diagram.
Figure 10 is the cross-sectional view of specific embodiment fixing device application process.
Drawing reference numeral explanation：
Knock-in tack 10, the second through hole 11, coniform sophisticated 12, round table-like stage casing 13, cylindric tail end 14, expandable nail set
20, body 21 is covered, convex ring body 22, groove 23, first through hole 24, bone passage 30, transplants tendon 40.
Embodiment
As shown in Figures 1 to 6, present embodiment discloses a kind of fixing device for Cruciate ligament reconstruction, it includes beating
Enter nail 10 and expandable nail set 20, one end of expandable nail set 20 is nail tip shape, and the other end is opening, and the set body 21 of expandable nail set 20 is
Tubulose, cover the convex ring body 22 that the circumferential lateral surface radially outwardly projecting of body 21 is parallel to each other formed with multi-turn.
In the non-expanded state, as shown in Figure 7 and Figure 8, its circumferential lateral surface is radially-inwardly recessed the set body 21 of the present embodiment
Formed with four axially extending grooves 23, ligament beam splitting is realized by groove 23.
In the expanded state, as shown in Figures 3 to 6, it plugs fixation to the knock-in tack 10 of the present embodiment by the opening
In body 21 is covered, for groove 23 in the presence of knock-in tack 10, radially extruding realizes that expansion is fixed.
Specifically, as shown in fig. 7, one end that the expandable nail of the present embodiment covers 20 nail tip shapes offers along wherein axis direction
First through hole 24, as depicted in figs. 1 and 2, the knock-in tack 10 of the present embodiment offer the second through hole 11 along wherein axis direction.
Under the swelling state, as shown in Figure 3 and Figure 4, the through hole 11 of first through hole 24 and second of the present embodiment is on same straight line.
By as above axial aperture structure, effectively reduce operation difficulty that suture wears and further facilitate and send nail instrument with outside
Compounding practice.
Exemplary, the expandable nail set 20 and knock-in tack 10 of the present embodiment are made by PEEK materials, and use mould
The method of molded processing plastics is processed shaping.
The expandable nail set 20 of the present embodiment is formed in one makings, is internally formed the cavity for plugging knock-in tack, outside formation
Openend, nail tip end, beam splitting groove 23 and increase frictional force convex ring body 22.
Adjacent angle between four grooves 23 of the present embodiment is equal (90 ° of angles), and symmetrical is formed at set body
In 21 circumferential lateral surface, the size modes all same of each bar groove 23, as shown in Figure 7 and Figure 8, the nail tip shape of expandable nail set 20
One end is the cone of axis direction perforate, and the circular multi-turn convex ring body 22 of the set circumferential lateral surface of body 21 is arranged in parallel not to be handed over
Fork, adjacent center spacing are not more than 1.5mm.As shown in figure 5, the width of each convex ring body 22, be integrally formed for increase with
The decorative pattern of bone road friction force, while and can effectively avoids that cutting damage occurs.
The knock-in tack 10 of the present embodiment also using being integrally formed making, the knock-in tack of the present embodiment by coniform sophisticated 12,
Round table-like stage casing 13 and cylindric tail end 14 form, the minimum end face of the round table-like diameter of stage casing 13 and coniform sophisticated 12 bottom
Face is docked, and the maximum end face of the round table-like diameter of stage casing 13 docks with the end face of cylindric tail end 14, and each interface is straight
Footpath is equal.The present embodiment knock-in tack 10 coniform sophisticated 12, round table-like stage casing 13 and the three of cylindric tail end 14 be in die cavity
Middle addition PEEK materials molding is integrally formed, and after forming and hardening, under normal operating condition, it has preferably rigidity and heavily fortified point
Soundness, it will not deform easily and nondistensible characteristic.
The outside dimension specification of the present embodiment expandable nail set 20 is 3-12mm, and uses consistent wall thickness, covers body 21
Cavity inner wall be smooth inner wall form, its internal diameter is adapted to the outside dimension of knock-in tack 10, and the outer surface of knock-in tack 10
Also use smooth morphology, ensure its can quick insertion and meet expansion and beam splitting demand.Specifically, the external diameter of knock-in tack 10 is big
, can be according to specific fixed needs in covering the internal diameter under the unswollen state of body 21 less than or equal to the internal diameter under the set swelling state of body 21
Appropriate adjustment is carried out to each size with actual conditions.
Of course, in other embodiments, knock-in tack of the invention can also be made using other materials,
Can also be made as other forms such as cylinder or cone, expandable nail set can also use other medical plastics, rubber or
The suitable flexible material of performance is made, and here is omitted.
Further, the present embodiment also discloses a kind of application method of the present embodiment fixing device, and it includes following step
Suddenly：
Step 1: by sending nail instrument that expandable nail set 20 is sent into specified location；
Step 2: knock-in tack 10 is squeezed into the set body 21 of expandable nail set 20, groove 23 is set to enter in the effect of knock-in tack 10
Row extrudes outwardly, and expandable nail set 20 is changed into the swelling state by the unswollen state, realize expandable nail set 20 radially towards
Outer expansion is fixed.
Exemplary, the present embodiment also discloses a kind of carries out consolidating for Cruciate ligament reconstruction using above-mentioned fixing device
Determine method, it comprises the following steps：
Step 1: as shown in figure 9, establish bone passage 30 in joint, the transplanting tendon 40 of reconstruction is implanted into；
Step 2: using ligamentum cruciatum ligamentopexis, ligament is divided into four beams, selects above-mentioned fixing device, with sending nail work
Expandable nail set 20 is sent into bone passage 30 by tool, and ensures to transplant 40 beam splitting as shown in Figure 10 of tendon in expandable nail set 20
In four grooves 23；
Step 3: knock-in tack 10 is squeezed into the set body 21 of expandable nail set 20, groove 23 is in the presence of knock-in tack 10, footpath
To extruding outwardly, after the expansion completely of expandable nail set 20, being fixedly secured to transplanting tendon 40 is realized.
With it is above-mentioned be only the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications should also regard
For protection scope of the present invention.
Claims (6)
1. a kind of fixing device for Cruciate ligament reconstruction, including knock-in tack and expandable nail set, it is characterised in that：The expansion
One end of nail set is nail tip shape, and the other end is opening, and the set of the expandable nail set is as tubulose, the outer circumferential side face diameter of the set body
The convex ring body being parallel to each other to outwardly convex formed with multi-turn；
Expandable nail set is formed in one making, is internally formed the cavity for plugging knock-in tack；
One end of expandable nail set nail tip shape offers first through hole along wherein axis direction, and the knock-in tack is along its axis
Direction offers the second through hole, and in the expanded state, the first through hole and second through hole are on same straight line；
In the non-expanded state, the circumferential lateral surface of the set body is radially-inwardly recessed formed with four axially extending grooves, leads to
Cross the groove and realize ligament beam splitting；
In the expanded state, the knock-in tack is plugged by the opening is fixed in the set body, and the groove is beaten described
In the presence of entering nail, radially extruding realizes that expansion is fixed.
2. it is used for the fixing device of Cruciate ligament reconstruction as claimed in claim 1, it is characterised in that：The expandable nail set by
PEEK materials are made.
3. it is used for the fixing device of Cruciate ligament reconstruction as claimed in claim 1, it is characterised in that：The knock-in tack is by PEEK
Material is made.
4. it is used for the fixing device of Cruciate ligament reconstruction as claimed in claim 1, it is characterised in that：Between four grooves
Adjacent angle it is equal, symmetrical is formed in the circumferential lateral surface of the set body.
5. it is used for the fixing device of Cruciate ligament reconstruction as claimed in claim 1, it is characterised in that：The knock-in tack is cylinder
Body or cone.
6. it is used for the fixing device of Cruciate ligament reconstruction as claimed in claim 1, it is characterised in that：The knock-in tack is by circular cone
Shape is sophisticated, round table-like stage casing and cylindric tail end composition, the minimum end face of the round table-like stage casing diameter with it is described coniform
The bottom surface docking at tip, the maximum end face of the round table-like stage casing diameter dock with the end face of the cylindric tail end, and
The diameter of each interface is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377194.1A CN104905859B (en) | 2015-07-01 | 2015-07-01 | For the fixing device of Cruciate ligament reconstruction, fixing means and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377194.1A CN104905859B (en) | 2015-07-01 | 2015-07-01 | For the fixing device of Cruciate ligament reconstruction, fixing means and application method |
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| Publication Number | Publication Date |
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| CN104905859A CN104905859A (en) | 2015-09-16 |
| CN104905859B true CN104905859B (en) | 2017-11-24 |
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| CN201510377194.1A Active CN104905859B (en) | 2015-07-01 | 2015-07-01 | For the fixing device of Cruciate ligament reconstruction, fixing means and application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510908B (en) * | 2016-12-01 | 2018-03-27 | 周大勇 | A kind of interior planting apparatus rebuild for cruciate ligaments of knee joint |
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