CN104905859A - Fixing device, fixing method and application method for reconstruction of cruciate ligaments - Google Patents
Fixing device, fixing method and application method for reconstruction of cruciate ligaments Download PDFInfo
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- CN104905859A CN104905859A CN201510377194.1A CN201510377194A CN104905859A CN 104905859 A CN104905859 A CN 104905859A CN 201510377194 A CN201510377194 A CN 201510377194A CN 104905859 A CN104905859 A CN 104905859A
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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
-
- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Rheumatology (AREA)
- Rehabilitation Therapy (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a fixing device, a fixing method and an application method for reconstruction of cruciate ligaments. The fixing device comprises a driven nail and an expansion nail sleeve. In an unexpanded state, four axially-extending grooves are formed on the peripheral side surface of a sleeve body in an inwardly and radial sinking mode. By means of the grooves, splitting of ligaments is achieved. In an expansion state, the driven nail is inserted into a sleeve body by means of an opening. Under the effect of the driven nail, the grooves are outwardly extruded so that expansive fixation is achieved. The fixing device, fixing method and application method for reconstruction of cruciate ligaments have following beneficial effects: 360-degree uniform expansion of the expansion nail sleeve is ensured; the expansion nail sleeve is prevented from being broken; transported tendons are not cut by the surgery of reconstruction of ligament; tendons are divided into four bundles by extrusion in a radial direction for effective fixation; fine fixation effect is obtained; full contact among transported tendons and a bone tunnel is achieved; recovery of tendons and bones is further promoted so that the fixing device is suitable for operative habits of a doctor; and the fixing device is easily and conveniently used without additional learning.
Description
Technical field
The present invention relates to the technical field of medical bio internal fixation device, particularly relate to a kind of fixture for Cruciate ligament reconstruction, fixing means and using method.
Background technology
Ligamentaum cruciatum maintains the stable important feature of knee joint; after the damage of ligamentaum cruciatum, fracture; if malpractice can cause instability of knee; then articular cartilage and meniscal regression is accelerated; increase the occurrence probability of other structural damages of joint; cause patient's daily routines limited, and cause the decline of self-care ability gradually.
Along with the development of arthroscopic techniques, adopt and transplant the Main Means that tendon Reconstruct anterior cruciate ligament by arthroscopy has become treatment cross ligament damage.What transplant tendon is fixedly most important link in Healing in Anterior Cruciate Ligament Reconstruction operation, is also the weakest link.Good fixingly can meet early postoperation motion, muscular training and the requirement of heavy burden, contribute to the fusion of transplanting tendon and bone.
At present, ligamentaum cruciatum operation uses absorbable interference screw fixation or Bone condensing nail to be fixed tendon graft usually, the technical problem that these nails of great majority exist is, absorbable interference screw fixation causes cutting wearing and tearing to tendon graft, have impact on the tensile strength of tendon and tendon and symphysis further; And Bone condensing nail is due to surperficial relative smooth, cannot be formed with bone marrow road and extrude closely, fixed effect is not ideal enough.
By retrieval, the applicant finds that No. 201410128124.8th, Chinese patent discloses a kind of screw and preparation method of Absorbable rod compound interface, its screw, be made up of screw cap, screw rod, head of screw connector, gene thin layer, screw rod outer rim is provided with tapping screw thread, and gene thin layer covers thread surface.Its screw is easy as mentioned above causes cutting wearing and tearing to tendon graft, have impact on the tensile strength of tendon and tendon and symphysis further, and also cannot be formed with bone marrow road and extrude tight, fixed effect is not ideal enough.
No. 201120077535.0th, Chinese patent discloses Allogenous cortical bone squeezing nail, and its front end is coniform, and there are 4 annular grooves on nail body surface, and nail afterbody is cylindric, has a circular thread eye to run through the whole rivet nut longitudinal axis.Be embedding pressure condition after Allogenous cortical bone squeezing nail inserts osseous tunnel and between tunnel wall, make osseous tunnel wall with extruding follow closely combine tightr, and with tendon graft reach extrude fixing, effectively prevent because cortex hangs " pendulum effect " fixedly caused outward, prevent tunnel to widen one's influence tendon-knitting; The ring-shaped groove of nail body makes extruding nail be shed in articular cavity, and can not cause any damage to tendon graft.This Bone condensing nail still cannot be formed with bone marrow road and extrude closely, and fixed effect is not ideal enough.
For realizing extruding closely, No. 201310056296.4th, Chinese patent discloses a kind of expansion type extruding nail, comprises expansion type extruding nail body, eccentric band tooth spiral bull stick, expansion link, coil tension spring and lock-screw; Expansion type extruding nail body 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 and installs notch, and eccentric band tooth spiral bull stick is installed notch two ends and is provided with locating hole; Eccentric band tooth spiral bull stick one side is shiny surface, eccentric band tooth spiral bull stick another side is the band flank of tooth, locking slot is provided with in the middle part of eccentric band tooth spiral bull stick, eccentric band tooth spiral bull stick plugs to be installed in notch at bias band tooth spiral bull stick, and the rotating shaft that eccentric band tooth spiral bull stick upper and lower end is arranged plugs in the locating hole of expansion type extruding nail two ends; Coil tension spring is enclosed within expansion link, and expansion link plugs and in screw thread stepped hole, adopts lock-screw to compress expansion link in the middle part of extruding nail body.
No. 201020237483.4th, Chinese patent discloses a kind of Medical expansion interface bolt, comprise expansion sleeve and inner core screw, described expansion sleeve is divided into cannula tip and expansion pad two parts, described cannula tip is the cylinder with crown end face, cannula tip traverses in order to the ligament duct through ligament, the coronalplane center of sleeve pipe longitudinally has inserter duct downwards, described expansion pad be internal diameter be less than inner core screw diameter and have fracture breach hollow circuit cylinder, the inwall of expansion pad has the screw thread that can match with the screw thread of inner core screw, described expansion pad is fixed on below cannula tip.The inner core screw of this employing adopts saw-tooth thread design, can only enter in expansion sleeve by the mode rotated, therefore cannot ensure that the interior outer shaft in precession path is collinear, make there is deviation to the squeeze pressure of expansion sleeve, cannot expand smoothly.Secondly, according to the flexible nature of knee articulation, after long activity, expansion sleeve coordinates easy generation to loosen with the internal and external threads of inner core screw, cause fixed effect to be had a greatly reduced quality.
Therefore, the applicant is devoted to develop a kind of fixture for Cruciate ligament reconstruction, fixing means and using method, realizing the cutting that can not cause in ligament reconstructive operation transplanting tendon, can realize extruding beam splitting simultaneously, and there is good fixed effect.
Summary of the invention
Object of the present invention, proposes a kind of fixture for Cruciate ligament reconstruction, fixing means and using method exactly, realizes the cutting that can not cause in ligament reconstructive operation transplanting tendon, can realize extruding beam splitting simultaneously, and have good fixed effect.
The present invention is for solving the problems of the technologies described above, provide a kind of fixture for Cruciate ligament reconstruction, it comprises knock-in tack and expandable nail cover, one end of described expandable nail cover is nail tip shape, the other end is opening, the cover of described expandable nail cover is as tubulose, and the circumferential lateral surface of described cover body radially outward convexes to form the convex ring body that multi-turn is parallel to each other.
In the non-expanded state, the circumferential lateral surface of described cover body has radially-inwardly been recessed to form four axially extended grooves, realizes ligament beam splitting by described groove;
In the expanded state, described knock-in tack is plugged by described opening and is fixed in described cover body, and described groove is under the effect of described knock-in tack, and radially extruding realizes expanding and fixes.
The present invention is used for the cooperation of fixture by above-mentioned special shape structure of Cruciate ligament reconstruction, optimize radial pressure to distribute and power conduction, 360 degree of even inflation that expandable nail overlaps can be guaranteed, that expandable nail can be avoided again to overlap breaks, realize the cutting that can not cause in ligament reconstructive operation transplanting tendon simultaneously, can radial compression divide four bundles effectively to fix, and there is good fixed effect.
Preferably, one end of described expandable nail cover nail tip shape offers the first through hole along wherein axis direction, and described knock-in tack offers the second through hole along wherein axis direction, and under described swelling state, described first through hole and described second through hole are on same straight line.
Above-described first through hole and the second through hole change existing side direction perforate mode, use axial aperture structure instead, effectively reduce the operation easier that suture wears.
Preferably, described expandable nail cover is made by PEEK (polyether-ether-ketone, English name polyetheretherketone) material.
Preferably, described knock-in tack is made by PEEK material.
Preferred PEEK material makes expandable nail cover and knock-in tack respectively, PEEK toughness of material and rigidity can be effectively utilized to have both and the feature averaged out, and PEEK material is to the excellent endurance feature of alternate stress, according to as above enlightening and instructing, one-body molded produce inflatable respectively expandable nail cover and the knock-in tack of rigidity, directly can adopt the method machine-shaping of the processing plastics such as mold pressing, transfer modling or injection moulding, make simple and fast, and the structure of molding can meet the user demand of the different parts of the present invention preferably.
Preferably, the adjacent angle between four described grooves is equal, in the symmetrical circumferential lateral surface being formed at described cover body.
Preferably, described knock-in tack is cylinder or cone.
Preferably, described knock-in tack is made up of coniform tip, round table-like stage casing and cylindric tail end, a diameter minimum end face in described round table-like stage casing docks with the bottom surface at described coniform tip, one end face of described round table-like stage casing largest diameter docks with the face, one end of described cylindric tail end, and the equal diameters of each interface.
The present invention also proposes a kind of fixing means for Cruciate ligament reconstruction, and it comprises the steps:
Step one, set up bone passage at joint, implant the transplanting tendon rebuild;
Step 2, employing ligamentum cruciatum fixation, ligament is divided into four bundles, selecting the fixture described in any one of claim 1-7, with sending nail instrument to be sent in described bone passage by described expandable nail cover, and guaranteeing the beam splitting of described transplanting tendon in four described grooves that described expandable nail overlaps;
Step 3, to be squeezed into by described knock-in tack in the cover body of described expandable nail cover, described groove, under the effect of described knock-in tack, radially extrudes, and after described expandable nail cover expands completely, realizes fixedly securing described transplanting tendon.
The present invention also proposes a kind of using method of fixture, and described fixture is above-mentioned fixture, and its using method comprises the steps:
Step one, by sending nail instrument to send on assigned address by described expandable nail cover;
Step 2, described knock-in tack squeezed in the cover body of described expandable nail cover, described groove is extruded outwardly in the effect of described knock-in tack, described expandable nail cover changes described swelling state into by described unswollen state, realizes described expandable nail cover and radially expands fixing.
In sum, the present invention is used for the fixture of Cruciate ligament reconstruction, fixing means and using method and also comprises following or several somes beneficial effects:
1, the present invention can reduce and transplants lengthwise movement (bungee jumping campaign) between tendon-bone road and transverse movement (rain brush effect).
2, the present invention has fixed feature, and fixture can be avoided the cutting of transplanting tendon, relatively little to the bone destruction of local.
3, the present invention can realize making to transplant tendon and the comprehensive engagement of bone road, can promote tendon and symphysis further.
4, the present invention promotes that operation is easy for installation further, can effectively reduce patient's misery, be convenient to post-operative recovery in use procedure.
5, operation at present adopts fixed form transplanting tendon being divided into four bursts of formulas, the expandable nail cover that fixture of the present invention proposes has the groove design of the four sides axial depression of inflatable, meet the operation custom of doctor, easy to use, without the need to additional studies.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is specific embodiment fixture perspective view in the non-expanded state.
Fig. 2 is specific embodiment fixture another perspective view in the non-expanded state.
Fig. 3 is specific embodiment fixture perspective view in the expanded state.
Fig. 4 is specific embodiment fixture another perspective view in the expanded state.
Fig. 5 is specific embodiment fixture structural front view in the expanded state.
Fig. 6 is specific embodiment fixture structure upward view in the expanded state.
Fig. 7 is specific embodiment expandable nail cover perspective view in the non-expanded state.
Fig. 8 is specific embodiment expandable nail cover another perspective view in the non-expanded state.
Fig. 9 is specific embodiment fixture application process schematic diagram.
Figure 10 is the cross sectional representation of specific embodiment fixture application process.
Drawing reference numeral illustrates:
Knock-in tack 10, the second through hole 11, coniform most advanced and sophisticated 12, round table-like stage casing 13, cylindric tail end 14, expandable nail cover 20, cover body 21, convex ring body 22, groove 23, the first through hole 24, bone passage 30, transplants tendon 40.
Detailed description of the invention
As shown in Figures 1 to 6, present embodiment discloses a kind of fixture for Cruciate ligament reconstruction, it comprises knock-in tack 10 and expandable nail cover 20, one end of expandable nail cover 20 is nail tip shape, the other end is opening, the cover body 21 of expandable nail cover 20 be tubulose, overlaps the circumferential lateral surface of body 21 and radially outward convexes to form the convex ring body 22 that multi-turn is parallel to each other.
In the non-expanded state, as shown in Figure 7 and Figure 8, its circumferential lateral surface has radially-inwardly been recessed to form four axially extended grooves 23 to the cover body 21 of the present embodiment, realizes ligament beam splitting by groove 23.
In the expanded state, as shown in Figures 3 to 6, it is plugged by described opening and is fixed in cover body 21 knock-in tack 10 of the present embodiment, and groove 23 is under the effect of knock-in tack 10, and radially extruding realizes expanding and fixes.
Concrete, as shown in Figure 7, one end that the expandable nail of the present embodiment overlaps 20 nail tip shapes offers the first through hole 24 along wherein axis direction, and as depicted in figs. 1 and 2, the knock-in tack 10 of the present embodiment offers the second through hole 11 along wherein axis direction.Under described swelling state, as shown in Figure 3 and Figure 4, first through hole 24 of the present embodiment and the second through hole 11 are on same straight line.By as above axial aperture structure, effectively reduce operation easier that suture wears and further facilitate and send nail instrument compounding practice with outside.
Exemplary, the expandable nail cover 20 of the present embodiment and knock-in tack 10 are made by PEEK material, and adopt the method for the processing plastic of compression molding to carry out machine-shaping.
The expandable nail cover 20 of the present embodiment is formed in one makings, innerly forms the cavity plugging knock-in tack, outsidely forms opening, nail tip end, the groove 23 of beam splitting and the convex ring body 22 of increase frictional force.
Adjacent angle between four grooves 23 of the present embodiment equal (90 ° of angles), in the symmetrical circumferential lateral surface being formed at cover body 21, the size modes of each bar groove 23 is all identical, as shown in Figure 7 and Figure 8, one end of the nail tip shape of expandable nail cover 20 is the taper shape of direction, axis perforate, cover body 21 circumferential lateral surface around multi-turn convex ring body 22 arranged in parallelly not intersect, adjacent center spacing is not more than 1.5mm.As shown in Figure 5, the width of each convex ring body 22 not etc., overallly not to be formed for increasing the decorative pattern with bone road friction force, can effectively avoid again cutting damage occurs simultaneously.
The knock-in tack 10 of the present embodiment also adopts one-body molded making, the knock-in tack of the present embodiment is made up of coniform most advanced and sophisticated 12, round table-like stage casing 13 and cylindric tail end 14, a diameter minimum end face in round table-like stage casing 13 docks with the coniform bottom surface of most advanced and sophisticated 12, one end face of round table-like stage casing 13 largest diameter docks with the face, one end of cylindric tail end 14, and the equal diameters of each interface.Coniform most advanced and sophisticated 12, the round table-like stage casing 13 of the present embodiment knock-in tack 10 and cylindric tail end 14 three are that in die cavity, add the mold pressing of PEEK material integrated, after forming and hardening, under normal operating condition, it has good rigidity and solidness, can not be out of shape easily and nondistensible characteristic.
The outside dimension specification of the present embodiment expandable nail cover 20 is 3-12mm, and adopt consistent wall thickness, the cavity inner wall of cover body 21 is smooth inner wall form, the outside dimension of its internal diameter and knock-in tack 10 is adaptive, and the outer surface of knock-in tack 10 also adopts smooth morphology, ensure that it also can meet expansion and beam splitting demand by quick insertion.Concrete, the external diameter of knock-in tack 10 internal diameter be greater than under cover body 21 unswollen state is less than or equal to the internal diameter under cover body 21 swelling state, fixingly can to need and practical situation carry out suitable adjustment to each size according to concrete.
Of course, in other detailed description of the invention, knock-in tack of the present invention also can adopt other materials to make, also can be made as other forms such as cylinder or cone, the flexible material that expandable nail cover also can adopt other medical plastics, rubber or performance to be applicable to makes, and repeats no more herein.
Further, the present embodiment also discloses a kind of using method of the present embodiment fixture, and it comprises the steps:
Step one, by sending nail instrument to be sent on assigned addresses by expandable nail cover 20;
Step 2, to be squeezed into by knock-in tack 10 in the cover body 21 of expandable nail cover 20, groove 23 is extruded outwardly in the effect of knock-in tack 10, and expandable nail cover 20 changes described swelling state into by described unswollen state, realizes expandable nail cover 20 and radially expands fixing.
Exemplary, the present embodiment also discloses a kind of fixing means utilizing above-mentioned fixture to carry out for Cruciate ligament reconstruction, and it comprises the steps:
Step one, as shown in Figure 9, set up bone passage 30 at joint, implant the transplanting tendon 40 rebuild;
Step 2, employing ligamentum cruciatum fixation, ligament is divided into four bundles, select above-mentioned fixture, with sending nail instrument to be sent in bone passages 30 by expandable nail cover 20, and guarantee by transplant tendon 40 as shown in Figure 10 beam splitting in four grooves 23 of expandable nail cover 20;
Step 3, to be squeezed into by knock-in tack 10 in the cover body 21 of expandable nail cover 20, groove 23, under the effect of knock-in tack 10, radially extrudes, and after expandable nail cover 20 expands completely, realizes transplanting fixedly securing of tendon 40.
With above-mentioned be only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the fixture for Cruciate ligament reconstruction, comprise knock-in tack and expandable nail cover, it is characterized in that: one end of described expandable nail cover is nail tip shape, the other end is opening, the cover of described expandable nail cover is as tubulose, and the circumferential lateral surface of described cover body radially outward convexes to form the convex ring body that multi-turn is parallel to each other; In the non-expanded state, the circumferential lateral surface of described cover body has radially-inwardly been recessed to form four axially extended grooves, realizes ligament beam splitting by described groove;
In the expanded state, described knock-in tack is plugged by described opening and is fixed in described cover body, and described groove is under the effect of described knock-in tack, and radially extruding realizes expanding and fixes.
2. as claimed in claim 1 for the fixture of Cruciate ligament reconstruction, it is characterized in that: one end of described expandable nail cover nail tip shape offers the first through hole along wherein axis direction, described knock-in tack edge wherein axis direction offers the second through hole, under described swelling state, described first through hole and described second through hole are on same straight line.
3., as claimed in claim 1 or 2 for the fixture of Cruciate ligament reconstruction, it is characterized in that: described expandable nail cover is made by PEEK material.
4., as claimed in claim 3 for the fixture of Cruciate ligament reconstruction, it is characterized in that: described knock-in tack is made by PEEK material.
5., as claimed in claim 1 or 2 for the fixture of Cruciate ligament reconstruction, it is characterized in that: the adjacent angle between four described grooves is equal, in the symmetrical circumferential lateral surface being formed at described cover body.
6., as claimed in claim 1 or 2 for the fixture of Cruciate ligament reconstruction, it is characterized in that: described knock-in tack is cylinder or cone.
7. as claimed in claim 1 or 2 for the fixture of Cruciate ligament reconstruction, it is characterized in that: described knock-in tack is made up of coniform tip, round table-like stage casing and cylindric tail end, a diameter minimum end face in described round table-like stage casing docks with the bottom surface at described coniform tip, one end face of described round table-like stage casing largest diameter docks with the face, one end of described cylindric tail end, and the equal diameters of each interface.
8. for a fixing means for Cruciate ligament reconstruction, it is characterized in that, comprise the steps:
Step one, set up bone passage at joint, implant the transplanting tendon rebuild;
Step 2, employing ligamentum cruciatum fixation, ligament is divided into four bundles, selecting the fixture described in any one of claim 1-7, with sending nail instrument to be sent in described bone passage by described expandable nail cover, and guaranteeing the beam splitting of described transplanting tendon in four described grooves that described expandable nail overlaps;
Step 3, to be squeezed into by described knock-in tack in the cover body of described expandable nail cover, described groove, under the effect of described knock-in tack, radially extrudes, and after described expandable nail cover expands completely, realizes fixedly securing described transplanting tendon.
9. a using method for fixture, is characterized in that, described fixture is the fixture described in any one of claim 1-7, and its using method comprises the steps:
Step one, by sending nail instrument to send on assigned address by described expandable nail cover;
Step 2, described knock-in tack squeezed in the cover body of described expandable nail cover, described groove is extruded outwardly in the effect of described knock-in tack, described expandable nail cover changes described swelling state into by described unswollen state, realizes described expandable nail cover and radially expands fixing.
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 true CN104905859A (en) | 2015-09-16 |
| CN104905859B 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106491179A (en) * | 2016-12-27 | 2017-03-15 | 重庆嵘安医疗器材有限公司 | A kind of osseous tunnel expander and its it is detachably connected the preparation method of head |
| CN106510908A (en) * | 2016-12-01 | 2017-03-22 | 周大勇 | Inner implantation device used for reconstructing knee joint cruciate ligament |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106510908A (en) * | 2016-12-01 | 2017-03-22 | 周大勇 | Inner implantation device used for reconstructing knee joint cruciate ligament |
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| CN113974730A (en) * | 2021-12-30 | 2022-01-28 | 杭州锐健马斯汀医疗器材有限公司 | Fixing system |
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