CN113974730B - Fixing system - Google Patents
Fixing system Download PDFInfo
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- CN113974730B CN113974730B CN202111638295.1A CN202111638295A CN113974730B CN 113974730 B CN113974730 B CN 113974730B CN 202111638295 A CN202111638295 A CN 202111638295A CN 113974730 B CN113974730 B CN 113974730B
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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
- A61B17/04—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
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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
- A61B17/04—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
- A61B2017/0403—Dowels
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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
- A61B17/04—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
- A61B2017/042—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors plastically deformed during insertion
Abstract
The invention relates to the technical field of medical instruments, in particular to a fixing system. The invention provides a fixation system comprising: a plurality of sheaths, extrusions, and shaped elastic bands; the plurality of sheath bodies are connected through the shaping elastic girdle band to form a fixing sheath with an extrusion hole, the fixing sheath comprises a near end, a far end and an outer cambered surface, the shaping elastic girdle band is sleeved on the outer cambered surface, and the extrusion hole is positioned at the near end and extends towards the far end; the extruded piece sets up in the extrusion hole, and can slide along the extending direction in extrusion hole to make a plurality of sheaths to the direction motion of keeping away from the extruded piece. Through adjusting the extruded piece along the gliding distance of the extending direction of extrusion hole, make a plurality of sheath bodies to the direction motion of keeping away from the extruded piece, realize that fixed sheath is fixed to the extrusion of graft in different specification bone tunnels, the outside surface of fixed sheath is the cambered surface, makes the graft can not cut, and the graft can cover in outside cambered surface and tendon area of contact big, does benefit to tendon healing and growth.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a fixing system.
Background
In cruciate ligament reconstruction surgery, fixation of implants typically includes compression fixation and indirect fixation. The interface screws with different specifications provide different strength and effect for the extrusion fixation of the graft, the extrusion strength is low when the specification is smaller, the graft is not easy to fix, the extrusion strength is high when the specification is larger, but the graft is easy to cut, the strength of the graft is reduced, and the reconstruction of the cruciate ligament is ineffective; indirect fixation through the pin typically results in a gap between the graft and the bone tunnel, which can create a "wiper effect" or/and a "bungee effect" that can affect cruciate ligament reconstruction. Therefore, in order to provide a more efficient cruciate ligament reconstruction operation for patients and overcome the above problems of the implant fixation in the operation, it is necessary to provide an implant fixation system which can satisfy the compression fixation of the implants in the bone tunnels with different specifications, reduce the cutting influence of the fixation tools on the implants, and avoid the occurrence of the "wiper effect" or/and the "bungee effect".
Disclosure of Invention
The invention aims to provide a fixing system to solve the technical problems that the existing extrusion fixing device cannot meet the extrusion fixing of implants in bone tunnels with different specifications, so that the implants are cut and a 'wiper effect' or/and a 'bungee effect' is generated.
The invention provides a fixing system, comprising: a plurality of sheaths, extrusions, and shaped elastic bands;
the sheath bodies are connected through the shaping elastic ring band to form a fixing sheath with an extrusion hole, the fixing sheath comprises a near end, a far end and an outer cambered surface, the shaping elastic ring band is sleeved on the outer cambered surface, and the extrusion hole is located at the near end and extends towards the far end;
the extruded piece set up in the extrusion hole, and can follow the extending direction in extrusion hole slides, so that it is a plurality of the sheath body is to keeping away from the direction motion of extruded piece.
As a further technical solution, the extrusion hole penetrates the distal end and the proximal end, and has a circular cross section, and the cross section area of the extrusion hole gradually decreases along the extension direction of the extrusion hole;
the extrusion piece is conical or truncated cone-shaped and is matched with the extrusion hole.
As a further technical scheme, a limiting structure is arranged between the sheath body and the extrusion piece along the extension direction of the extrusion hole;
the limiting structure is provided with a plurality of limiting gears, and the extrusion piece can slide among the limiting gears relative to the sheath body.
As a further technical solution, the limiting structure includes a first limiting groove, a second limiting groove, and an elastic limiting member engaged with the first limiting groove and the second limiting groove;
the first limit groove is arranged on the sheath body, and the second limit groove is arranged on the extrusion piece.
As a further technical scheme, a sliding-out groove is further arranged between the sheath body and the extrusion piece along the extension direction of the extrusion hole;
the sliding groove is located at a plurality of limiting gears and can be matched with the elastic limiting part to enable the extrusion piece to slide out of the extrusion hole.
As a further technical scheme, a plurality of first limiting grooves are formed for forming a plurality of limiting gears, and the number of the second limiting grooves is less than that of the first limiting grooves;
the sliding-out groove is formed in the sheath body, and the first limiting grooves are communicated with the sliding-out groove;
the elastic limiting piece is arranged in the second limiting groove.
As a further technical solution, the elastic limiting member is spherical, and the first limiting groove and the second limiting groove are both spherical grooves.
As a further technical scheme, the extrusion part is provided with a torsion part for rotating.
As a further technical scheme, the outer arc surface is provided with at least one annular mounting groove;
the shaping elastic ring belt is arranged in the annular mounting groove.
As a further technical scheme, the device further comprises a pressure monitoring device arranged in the annular mounting groove, wherein the pressure monitoring device is positioned on the inner side of the shaping elastic girdle and matched with the shaping elastic girdle.
As a further technical scheme, the pressure monitoring device comprises a pressure monitoring assembly, an exciting piece and an elastic sealing shell;
an accommodating cavity is formed in the elastic sealing shell, and the pressure monitoring assembly is arranged in the accommodating cavity;
the excitation piece is arranged on the elastic sealing shell and is positioned between the elastic sealing shell and the shaping elastic annular band, and the excitation piece is matched with the pressure monitoring assembly through the elastic sealing shell.
As a further technical scheme, the pressure monitoring assembly comprises a base, a circuit board, a piezoelectric vibrator, a pressure signal emitter and a toggle spring, wherein the piezoelectric vibrator, the pressure signal emitter and the circuit board are electrically connected;
the base is fixed on the inner wall of the elastic sealing shell, which is far away from one side of the exciting piece, and the circuit board and the pressure signal transmitter are both fixed on the base;
one end of the toggle spring is fixed on the base, and the other end of the toggle spring is connected to the inner wall of the elastic sealing shell, which is close to one side of the exciting piece and corresponds to the exciting piece;
one end of the piezoelectric vibrator is fixed on the base, and the other end of the piezoelectric vibrator is matched with the toggle spring and is positioned in a spiral gap of the toggle spring.
As a further technical scheme, the pressure monitoring assembly further comprises a limiting guide post connected to the base, and the shifting spring is sleeved on the limiting guide post.
As a further technical scheme, the piezoelectric vibrator comprises a piezoelectric wafer and a metal substrate which are connected with each other, one end of the metal substrate is fixed on the base, the other end of the metal substrate is located in a spiral gap of the toggle spring, and a wedge-shaped arc structure matched with the toggle spring is arranged.
As a further technical scheme, a scale indicating line used for judging the sliding distance of the extrusion piece is arranged on the sheath body.
As a further technical proposal, a plurality of bone lengthening holes are arranged on the sheath body.
As a further technical solution, a guiding arc is arranged between the outer arc surface and the distal end.
As a further technical scheme, the device also comprises a mounting bracket and a mandril arranged on the mounting bracket;
the mounting bracket is connected to the proximal end, and the extrusion piece is provided with a top groove matched with the ejector rod.
Compared with the prior art, the fixing system provided by the invention has the technical advantages that:
the invention provides a fixation system comprising: a plurality of sheaths, extrusions, and shaped elastic bands; the plurality of sheath bodies are connected through the shaping elastic girdle band to form a fixing sheath with an extrusion hole, the fixing sheath comprises a near end, a far end and an outer cambered surface, the shaping elastic girdle band is sleeved on the outer cambered surface, and the extrusion hole is positioned at the near end and extends towards the far end; the extruded piece sets up in the extrusion hole, and can slide along the extending direction in extrusion hole to make a plurality of sheaths to the direction motion of keeping away from the extruded piece.
The sliding distance of the extrusion piece along the extension direction of the extrusion hole is adjusted, so that the plurality of sheath bodies move towards the direction far away from the extrusion piece, the fixed sheath can extrude and fix the graft in bone tunnels with different specifications, the elastic fixation of the shaped elastic ring band on the fixed sheath can keep the integral appearance of an outer cambered surface, the possibility of the plurality of sheath bodies moving towards the direction far away from the extrusion piece can be provided, the elastic extrusion can also improve the pulling resistance of the fixed sheath in the bone tunnels with different specifications, the problem of expansion of the bone tunnels is solved, the graft is prevented from sliding, the outer surface of the fixed sheath is a cambered surface, the graft cannot be cut, the graft can cover the outer cambered surface of the fixed sheath, the graft is filled in the bone tunnels, and the windshield wiper effect and the bungee effect are effectively avoided; meanwhile, the contact area of the bone tendon and the bone tendon is large, so that the bone tendon is favorable for healing and growing.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a cross-sectional view of an extrusion inserted into a retaining sheath according to an embodiment of the present invention;
FIG. 2 is a view taken along direction A of FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a view of FIG. 2 taken along line C in accordance with an embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of B-B of FIG. 1 according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a pressure monitoring device according to an embodiment of the present invention;
FIG. 6 is an enlarged view F of FIG. 5 according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a retaining sheath provided in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of the embodiment of the present invention shown in direction D in FIG. 7;
FIG. 9 is a cross-sectional view of an extrusion provided by an embodiment of the present invention;
FIG. 10 is a schematic view of direction E of FIG. 9 according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a fixing system according to an embodiment of the present invention.
Icon: 1-fixing sheath; 101-left half sheath; 102-right half sheath body; 103-sliding out of the groove; 104-a first limit groove; 105-scale indicator lines; 106-bone lengthening holes; 107-pilot arc; 2-a threaded hole; 3-extrusion; 301-a second limit groove; 302-a straight slot; 4-an elastic limit piece; 5-shaping the elastic girdle band; 6-an excitation member; 7-elastic sealing shell; 8-a pressure monitoring device; 801-a base; 802-limit guide posts; 803-a circuit board; 804-a piezoelectric vibrator; 804 a-piezoelectric wafer; 804 b-a metal substrate; 805-a pressure signal transmitter; 806-toggle spring; 807-a cushion block; 808-wedge arc structure; 9-a top rod; and 10, mounting a bracket.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
The specific structure is shown in fig. 1-11.
The present embodiments provide a fixation system, comprising: a plurality of sheaths, extrusions 3 and shaped elastic bands 5;
the plurality of sheaths are connected through the shaped elastic girdle 5 to form a fixed sheath 1 with an extrusion hole, the fixed sheath 1 comprises a near end, a far end and an outer cambered surface, the shaped elastic girdle 5 is sleeved on the outer cambered surface, and the extrusion hole is positioned at the near end and extends towards the far end;
the extrusion piece 3 is arranged in the extrusion hole, and can slide along the extension direction of the extrusion hole, so that the plurality of sheath bodies move towards the direction far away from the extrusion piece 3.
In this embodiment, design elastic ring clitellum 5 cover is on a plurality of sheaths, elastic fixation through design elastic ring clitellum 5 makes a plurality of sheaths constitute and has the near-end, the distal end, the fixed sheath 1 of outside cambered surface and extrusion hole, fixed sheath 1 is cylindrical, round platform type or conical, fixed sheath 1 in this embodiment is cylindrical, the extrusion hole is located the near-end, and be located fixed sheath 1's axis, thus, when making a plurality of sheaths move to the direction of keeping away from extruded article 3 and be the radial motion to the axis promptly, a plurality of sheaths atress are even, make the even of whole fixed sheath 1 inflation, and it is higher with bone tunnel matching degree, make the graft and the tendon attachability of covering in fixed sheath 1 outside cambered surface better simultaneously.
The preferred, the sheath body is provided with two, be left half sheath body 101 and right half sheath body 102 respectively, moreover, the steam generator is simple in structure, it is fixed to conveniently utilize design elastic girdle 5, simultaneously when extruded article 3 slides by near-end to distal end along the extrusion hole, all act on left half sheath body 101 along the left radial force of fixed sheath 1 axis, the radial force on right side all acts on right half sheath body 102, the whole atress is comparatively concentrated, left half sheath body 101 and right half sheath body 102 are stable along the radial motion of fixed sheath 1 axis, the whole reliability is higher. The number of the sheaths is not limited to two, and may be three, four, five, six, seven, eight, or the like, or may be any number of eight or more.
Wherein, the proximal end of the fixing sheath 1 is the end close to the operator, and the distal end is the end far away from the operator.
In the embodiment, the plurality of sheaths move towards the direction far away from the extrusion piece 3 by adjusting the sliding distance of the extrusion piece 3 along the extension direction of the extrusion hole, so that the extrusion fixation of the fixing sheath 1 on the graft in the bone tunnels with different specifications is realized, the elastic fixation of the shaped elastic ring band 5 on the fixing sheath 1 can keep the integral shape of an outer cambered surface, and the possibility of the movement of the plurality of sheaths towards the direction far away from the extrusion piece 3 is provided, meanwhile, the elastic extrusion can also improve the anti-pulling effect of the fixing sheath 1 in the bone tunnels with different specifications, the problem of the enlargement of the bone tunnels and the prevention of the sliding of the graft, the outer surface of the fixing sheath 1 is a cambered surface, so that the graft cannot be cut, and the graft can cover the outer cambered surface of the fixing sheath 1, so that the graft is full of the bone tunnels, and the windshield wiper effect and the bungee effect are effectively avoided; meanwhile, the contact area of the bone tendon and the bone tendon is large, so that the bone tendon is favorable for healing and growing.
Specifically, the extrusion hole link up distal end and near-end, and the cross section is circular, and along the extending direction in extrusion hole, the cross-sectional area in extrusion hole reduces gradually, and extruded article 3 is conical or round platform shape, and matches with the extrusion hole, makes extruded article 3 get into and has the auto-lock nature behind the extrusion hole, need just can make extruded article 3 slide to the distal end along the extrusion hole through applying along fixed sheath 1 axial power promptly the power of extrusion hole extending direction.
The preferred of this embodiment, extruded piece 3 is the round platform shape, and the shape both had been matchd with the extrusion hole, and extruded piece 3's tip is the plane simultaneously, prevents to stretch out and causes the damage to the bone tunnel behind the extrusion hole. The diameter of the extrusion hole of the fixing sheath 1 after insertion into the extrusion member 3 satisfies the following formula: d = DS/(L + S) + d0. Wherein D is the major-end diameter of extrusion piece 3, S is extrusion piece 3 process, i.e. the distance from the major end to the proximal end of extrusion piece 3 after entering the extrusion hole, L is the length of the fixed sheath 1, D0To fix the initial diameter of the sheath 1, i.e., the diameter of the extrusion hole into which the extrusion 3 is not inserted. So, through adjusting the process of extruded piece 3 in the extrusion hole, can change the diameter of fixed sheath 1 gradually, and then satisfy fixed sheath 1 to the extrusion of graft in different specification bone tunnels fixed. Simple structure, the diameter of adjusting fixed sheath 1 is convenient.
In the optional technical scheme of the embodiment, a limit structure is arranged between the sheath body and the extrusion piece 3 along the extension direction of the extrusion hole; limiting structure is formed with a plurality of spacing gears, and extruded article 3 can slide between a plurality of spacing gears for the sheath body. Exert fixed sheath 1 axial power through the outside and make extruded article 3 slide between a plurality of spacing gears to the distal end, because every spacing gear all has limiting displacement to extruded article 3, prevent when not exerting fixed sheath 1 axial power, design elastic ring belt 5 and bone tunnel make extruded article 3 slide to the near-end to the radial effort of left half sheath body 101 and right half sheath body 102, guarantee fixed sheath 1 stability, improve the fixed effect of extrusion and the resistance to plucking ability of fixed sheath 1 to the graft, and then improve the tendon healing and the growth effect.
In this embodiment, be provided with limit structure between half left sheath body 101 and the extruded article 3, or be provided with limit structure between half right sheath body 102 and the extruded article 3, it is preferred, be provided with limit structure between half left sheath body 101 and half right sheath body 102 and the extruded article 3, so, better to extruded article 3's spacing effect, whole more stable.
In an optional technical solution of this embodiment, the limiting structure includes a first limiting groove 104, a second limiting groove 301, and an elastic limiting member 4 engaged with the first limiting groove 104 and the second limiting groove 301; the first limit groove 104 is provided on the sheath body, and the second limit groove 301 is provided on the extrusion member 3. When elasticity locating part 4 is located between first spacing groove 104 and the second spacing groove 301, the one end of elasticity locating part 4 is located first spacing groove 104, the other end is located second spacing groove 301, elasticity locating part 4 is located spacing gear promptly this moment, when applying the axial force to extruded article 3, elasticity locating part 4 produces deformation, roll-off and get into next spacing gear in by a spacing gear, so realize spacing effect, moreover, the steam generator is simple in structure, spacing effectual, and elasticity locating part 4 can promote the anti extraction capacity of whole fixed sheath 1 in the bone tunnel to the elasticity extrusion of the sheath body, can also improve the adaptive capacity of fixed sheath 1 when the bone tunnel increases, do not influence the natural growth of bone tunnel.
Further, a sliding-out groove 103 is arranged between the sheath body and the extrusion piece 3 along the extension direction of the extrusion hole; the sliding-out groove 103 is located at a plurality of limiting gears and can be matched with the elastic limiting piece 4 for sliding the extrusion piece 3 out of the extrusion hole. When applying torsional force to extruded article 3, elastic limiting part 4 produces elastic deformation, by in the spacing gear roll-off groove 103 that slides in, and then apply the pulling force to extruded article 3, elastic limiting part 4 slides along roll-off groove 103, limit structure does not have spacing effect this moment, make extruded article 3 can easily be pulled out, after extracting extruded article 3, design elastic ring clitellum 5 makes fixed sheath 1 diameter reduce to fixed sheath 1 is whole to be applied radial force, make things convenient for fixed sheath 1 to wholly take out bone tunnel.
Specifically, the second limiting groove 301 is provided with a plurality of for form a plurality of limiting gears, the number that first limiting groove 104 set up is less than the number of second limiting groove 301, roll-off groove 103 sets up on extruded piece 3, a plurality of second limiting grooves 301 all communicate with roll-off groove 103, elasticity locating part 4 sets up on first limiting groove 104. So, when extruded piece 3 was moved to the distal end by the near-end in the extrusion hole, elasticity locating part 4 can get into a plurality of second spacing grooves 301 in proper order, realizes limit function. Simple structure, it is spacing effectual, can carry on spacingly to extrusion piece 3 different processes, the suitability is strong.
Preferably, a plurality of first limiting grooves 104 are arranged for forming a plurality of limiting gears, and the number of the second limiting grooves 301 is less than that of the first limiting grooves 104; the sliding-out groove 103 is arranged on the sheath body, and the plurality of first limiting grooves 104 are communicated with the sliding-out groove 103; the elastic limiting member 4 is disposed in the second limiting groove 301. So can reach above-mentioned effect equally, simultaneously because elasticity locating part 4 is located second spacing groove 301, can effectively avoid extruded article 3 in the extrusion hole by the near-end when to the distal end motion, extruded article 3's tip is unimpeded, slides more smoothly.
It should be noted that, when the first limiting grooves 104 are provided in plurality, the plurality of first limiting grooves 104 are arranged in equal intervals, and when the second limiting grooves 301 are provided in plurality, the plurality of second limiting grooves 301 are arranged in equal intervals, and the distance between adjacent first limiting grooves 104 is equal to the distance between adjacent second limiting grooves 301, so that when the extrusion member 3 moves from the near end to the far end in the extrusion hole, the adjacent first limiting grooves 104 and the adjacent second limiting grooves 301 can correspond to each other, thereby achieving the limiting effect.
In this embodiment, preferably, the left half sheath body 101 is provided with four first limiting grooves 104, the right half sheath body 102 is provided with four first limiting grooves 104, and the extrusion member 3 is provided with two second limiting grooves 301 corresponding to the left half sheath body 101 and the right half sheath body 102, respectively. Like this, extruded piece 3, left half sheath body 101 and right half sheath body 102 all receive the force equilibrium, and spacing stability, simple structure simultaneously.
In an optional technical solution of this embodiment, the elastic limiting member 4 is spherical, and the first limiting groove 104 and the second limiting groove 301 are both spherical grooves. Place the second spacing groove 301 in globular elastic limiting part 4 in, can not fall out under the natural state, and extruded article 3 is when the extrusion downthehole motion, the easy roll-off or the roll-off of first spacing groove 104 in the globular elastic limiting part 4 warp the back, also easily by first spacing groove 104 roll-off in the roll-off groove 103, simultaneously when extruded article 3 does not move, and when the globular elastic limiting groove was located first spacing groove 104 and realized limit function, bone tunnel and design elastic ring area 5 were difficult for making globular elastic limiting part 4 roll-off first spacing groove 104 or second spacing groove 301 to the radial force that fixed sheath 1 was applyed, make the overall stability, high reliability.
In the optional technical scheme of this embodiment, the elastic limiting member 4 is rod-shaped, one end of the elastic limiting member is connected to the first limiting groove 104 or the second limiting groove 301, the other end of the elastic limiting member has the first guide structure, the first limiting groove 104 or the second limiting groove 301 connected to the elastic limiting member 4 has the second guide structure, and the first guide structure is matched with the second guide structure to facilitate sliding in and sliding out, so that the above effects can be achieved.
Among the optional technical scheme of this embodiment, limit structure including be formed with a plurality of spacing gears the tooth's socket and with tooth's socket complex slider, slider and tooth's socket set up respectively on extruded article 3 and sheath body, tooth's socket and roll-off groove 103 intercommunication, the slider can be by the tooth's socket roll-off in the roll-off groove 103, so, the slider has better spacing effect with the tooth's socket cooperation equally, and simple structure.
Among the optional technical scheme of this embodiment, be provided with the expanding structure between extruded article 3 and the sheath body, the expanding structure includes protruding and along the recess that extrusion hole extending direction degree of depth reduces gradually, wherein, can be that the arch sets up on extruded article 3, and the recess setting is on the sheath body, also can be that the arch sets up on the sheath body, and the recess setting is on extruded article 3. Extruded piece 3 slides along the extending direction in extrusion hole, makes the arch slide along the recess, because the recess reduces along extrusion hole extending direction degree of depth gradually, and the arch is applyed along fixed sheath 1 radial power to the sheath body, makes the sheath body along fixed sheath 1's radial motion, so, through adjusting extruded piece 3 in the downthehole process of extrusion, equally can change the diameter of fixed sheath 1 gradually, and then satisfies fixed sheath 1 fixed to the extrusion of graft in different specification bone tunnels. Simple structure, the diameter of adjusting fixed sheath 1 is convenient.
Further, be provided with limit structure in the recess, limit structure is including setting up the spacing bump in the recess, and spacing bump is provided with a plurality ofly, and forms spacing gear, and wherein, the arch has elasticity and/or the bump has elasticity, and limit function can be realized to arch and bump cooperation, makes things convenient for the arch to slide along the recess through elastic deformation simultaneously, simple structure, and is spacing convenient.
Wherein, roll-off groove 103 is located the groove and communicates with the recess, and extruded piece 3 can make the arch get into roll-off groove 103 through rotating, makes things convenient for extruded piece 3 to extract.
In an alternative embodiment of the present embodiment, the extrusion member 3 is provided with a torsion portion for rotation.
In this embodiment, the main aspects of extruded article 3 is the rear end, the tip of extruded article 3 is the front end, the rear end of extruded article 3 is provided with the portion of twisting, make things convenient for the operator to twist extruded article 3, wherein the portion of twisting can be the handle, the convenient structure of applying torsion to extruded article 3 such as boss or knob, it is preferred, a word groove 302 has been seted up to extruded article 3's rear end, a word groove 302 link up extruded article 3's rear end terminal surface, conveniently apply torsion to extruded article 3 through a word groove 302, make elasticity locating part 4 slide in slip out groove 103 can extract extruded article 3, fixed sheath 1 also contracts under the effect of design elastic ring clitellum 5, thereby take out it, moreover, the steam generator is simple in structure, fixing system demolishs simple and convenient, extruded article 3 an organic whole body nature is high, simultaneously practice thrift the space, and improve space utilization.
In an optional technical scheme of the embodiment, at least one annular mounting groove is formed in the outer arc surface; the shaping elastic ring belt 5 is arranged in the annular mounting groove. The shaping elastic ring belt 5 is positioned in the annular mounting groove and is flush with the outer arc surface, so that the effect of fixing the graft is better, and the graft is integrally flat.
The preferred, annular mounting groove of this embodiment is provided with threely, and one of them is located the middle part of outside cambered surface, middle part between distal end and the near-end promptly, and two other are located one side that is close to the near-end respectively and one side that is close to the distal end, all are provided with design elastic ring area 5 in every annular mounting groove, so, three position correspondence about fixed sheath 1 is fixed through three 5 elastic ring areas of design elastic ring, and is overall stable, and fixed effectual, fixed sheath 1 wholly receives radial force equilibrium.
It should be noted that any number of annular mounting grooves can be arranged on the outer arc surface, and each annular mounting groove can be arranged at any position of the outer arc surface as long as the requirement is met.
In the optional technical scheme of this embodiment, still including setting up the pressure monitoring device 8 in the annular mounting groove, pressure monitoring device 8 is located design elastic ring 5's inboard, and cooperates with design elastic ring 5. Fixed sheath 1 is when fixed the graft, extrusion piece 3 slides along the extending direction of extrusion hole, fixed sheath 1 whole diameter is crescent, design elastic ring area 5 has radial contractility and can use pressure monitoring device 8 to fixed sheath 1 this moment, pressure monitoring device 8 can be with pressure signal transmission to external equipment on so that carry out real-time supervision, the pressure signal that pressure monitoring device 8 sent can be used as the reference that adjustment graft and bone laminating degree and prevention bone tunnel are extrudeed brokenly, the extrusion state of the graft also can be monitored in real time after the fixed graft simultaneously.
In an optional technical scheme of the embodiment, the pressure monitoring device 8 comprises a pressure monitoring assembly, an exciting piece 6 and an elastic sealing shell 7; an accommodating cavity is formed in the elastic sealing shell 7, and the pressure monitoring assembly is arranged in the accommodating cavity; the exciting piece 6 is arranged on the elastic sealing shell 7 and is positioned between the elastic sealing shell 7 and the shaping elastic ring belt 5, and the exciting piece 6 is matched with the pressure monitoring assembly through the elastic sealing shell 7.
In this embodiment, when extruded article 3 slides in the extrusion hole and makes fixed sheath 1 diameter increase, design elastic ring zone 5 self radial contraction power and bone tunnel effect are passed through excitation 6 and are acted on elastic seal shell 7 at the power of design elastic ring zone 5, make elastic seal shell 7 produce deformation, and then the pressure monitoring subassembly produces the outside transmission of the pressure that elastic seal shell 7 produced deformation and received, so, when the process of adjustment extruded article 3, can real-time supervision pressure between fixed sheath 1 and the bone tunnel, and then judge the laminating degree of graft and bone, and prevent that extruded article 3 process from too big crushing bone tunnel and causing medical accident.
In an optional technical scheme of this embodiment, the pressure monitoring assembly includes a base 801, a circuit board 803, a piezoelectric vibrator 804, a pressure signal emitter 805 and a toggle spring 806, and the piezoelectric vibrator 804, the pressure signal emitter 805 and the circuit board 803 are electrically connected; the base 801 is fixed on the inner wall of the elastic sealing shell 7 at the side far away from the exciting piece 6, and the circuit board 803 and the pressure signal transmitter 805 are both fixed on the base 801; one end of the toggle spring 806 is fixed on the base 801, and the other end is connected to the inner wall of the elastic sealing shell 7 near one side of the exciting piece 6 and corresponds to the exciting piece 6; one end of the piezoelectric vibrator 804 is fixed on the base 801, and the other end is matched with the toggle spring 806 and is positioned in the spiral gap of the toggle spring 806.
In this embodiment, the elastic sealing case 7 is a cube or a cuboid, and the inside has a containing cavity, when the exciter 6 extrudes the wall body of the elastic sealing case 7 near one side of the exciter 6, the wall body deforms towards one side of the base 801, thereby compressing the toggle spring 806, the spiral gap of the toggle spring 806 decreases and further abuts against one end of the piezoelectric vibrator 804 located in the spiral gap, so that the piezoelectric vibrator 804 deforms, mechanical energy is converted into electric energy, the piezoelectric vibrator 804 supplies power to the circuit board 803, and the circuit board 803 transmits a pressure signal to the outside through the pressure signal transmitter 805. Therefore, the self-powered pressure monitoring of the tendon extrusion state is realized through the piezoelectric vibrator 804, the structure is simple, the safety and reliability are high, the pressure monitoring sensitivity is high, and the pressure monitoring effect is good.
Further, the pressure monitoring assembly further comprises a limit guide post 802 connected to the base 801, and the limit guide post 802 is sleeved with a toggle spring 806. Toggle spring 806 is flexible along spacing guide post 802 axial, prevents to toggle spring 806 radial swing and destroys the pressure monitoring subassembly, improves pressure monitoring's effect, improves the reliability of toggling spring 806.
Specifically, base 801 is the U type, the inner wall of excitation 6 one side is kept away from to the bottom fixed at elastic seal shell 7, the protruding orientation in both ends is close to the inner wall of excitation 6 one side, the tip of the protruding department in both ends all is provided with a plurality of piezoelectric vibrator 804, the protruding tip at base 801 is fixed to the one end of a plurality of piezoelectric vibrator 804, the other end is located the helical gap of stirring spring 806, be provided with cushion 807 between a plurality of piezoelectric vibrator 804, all be provided with the through-hole on cushion 807 and the piezoelectric vibrator 804, the screw passes the through-hole of cushion 807 and the through-hole of piezoelectric vibrator 804 is fixed at the bellied tip in base 801 both ends.
It should be noted that the base 801 is not limited to a U shape, and may be cylindrical or annular.
The piezoelectric vibrator 804 includes a piezoelectric wafer 804a and a metal substrate 804b connected to each other, where the piezoelectric wafer 804a and the metal substrate 804b are bonded by glue, which is convenient for connection and low in cost, but not limited thereto, and may also be connected by other methods, such as welding or connecting members. One end of the metal substrate 804b is fixed to the base 801, and the other end is located in the spiral gap of the toggle spring 806, and is provided with a wedge-shaped arc structure 808 matched with the toggle spring 806. Piezoelectric vibrator 804 simple structure stirs simultaneously when spring 806 compresses and cooperates with wedge circular arc structure 808, and the one end that makes metal substrate 804b have wedge circular arc structure 808 can adaptability move along with compression spring contraction direction, prevents that metal substrate 804b from breaking because of warping too big, and wedge circular arc structure 808 has a guide effect, makes metal substrate 804b have the one end of wedge circular arc structure 808 and stirs the better cooperation motion of spring 806.
In an optional technical scheme of the embodiment, a scale indication line 105 for judging the sliding distance of the extrusion member 3 is arranged on the sheath body. Scale indicating line 105 is located a plurality of spacing gear departments, be located a plurality of first spacing groove 104 departments promptly, because extrusion article 3 gets into the downthehole back of extrusion, it is spacing that the outside can't judge through spacing gear cooperation between extrusion article 3 and the sheath body, judge extrusion article 3's process through scale indicating line 105, thereby whether it is spacing through spacing gear cooperation between extrusion article 3 and the sheath body to judge, and is simple and convenient, can guarantee to be in the gear of spacing gear between extrusion article 3 and the sheath body, improve overall reliability.
In an optional technical solution of this embodiment, the sheath body is provided with a plurality of bone lengthening holes 106. The bone lengthening hole 106 is positioned on the outer side cambered surface of the fixing sheath 1, the part of the bone tunnel after growth enters the bone lengthening hole 106, the part entering the bone lengthening hole 106 is combined with the graft on the outer side cambered surface into a whole, the combination effect of the graft and the bone tunnel is improved, and the bone tendon healing and growth are facilitated.
In an optional technical solution of this embodiment, a guiding arc 107 is disposed between the outer arc surface and the distal end. Prevent the fixing sheath 1 from being stuck after entering the bone tunnel and simultaneously avoid scratching the bone tunnel.
In an optional technical scheme of the embodiment, the device further comprises a mounting bracket 10 and a mandril 9 arranged on the mounting bracket 10; the near end of the fixing sheath 1 is provided with a threaded hole 2, the mounting bracket 10 is connected with the threaded hole 2 of the near end through a screw, and the extrusion piece 3 is provided with a top groove matched with the mandril 9. Wherein the top groove is located the centre of straight line groove 302, offers the top groove at the middle part of straight line groove 302 promptly, after fixed sheath 1 arranges the bone tunnel in, makes ejector pin 9 advance extruded article 3 through the top groove through promoting ejector pin 9, simple structure, convenient operation, and it is effectual to the promotion of extruded article 3, and after having fixed the graft, the installing support 10 and ejector pin 9 can be demolishd to the unscrewing screw, simple structure, convenient operation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (14)
1. A fixation system, comprising: a plurality of sheaths, extrusions, and shaped elastic bands;
the sheath bodies are connected through the shaping elastic ring band to form a fixing sheath with an extrusion hole, the fixing sheath comprises a near end, a far end and an outer cambered surface, the shaping elastic ring band is sleeved on the outer cambered surface, and the extrusion hole is located at the near end and extends towards the far end;
the extrusion piece is arranged in the extrusion hole and can slide along the extension direction of the extrusion hole, so that the sheath bodies move in the direction far away from the extrusion piece;
the outer arc surface is provided with at least one annular mounting groove;
the shaping elastic ring belt is arranged in the annular mounting groove;
the pressure monitoring device is arranged in the annular mounting groove, is positioned on the inner side of the shaping elastic girdle and is matched with the shaping elastic girdle;
the pressure monitoring device comprises a pressure monitoring assembly, an exciting piece and an elastic sealing shell;
an accommodating cavity is formed in the elastic sealing shell, and the pressure monitoring assembly is arranged in the accommodating cavity;
the exciting piece is arranged on the elastic sealing shell and is positioned between the elastic sealing shell and the shaping elastic annular belt, and the exciting piece is matched with the pressure monitoring assembly through the elastic sealing shell;
the pressure monitoring assembly comprises a base, a circuit board, a piezoelectric vibrator, a pressure signal transmitter and a toggle spring, wherein the piezoelectric vibrator, the pressure signal transmitter and the circuit board are electrically connected;
the base is fixed on the inner wall of the elastic sealing shell, which is far away from one side of the exciting piece, and the circuit board and the pressure signal transmitter are both fixed on the base;
one end of the toggle spring is fixed on the base, and the other end of the toggle spring is connected to the inner wall of the elastic sealing shell, which is close to one side of the exciting piece and corresponds to the exciting piece;
one end of the piezoelectric vibrator is fixed on the base, and the other end of the piezoelectric vibrator is matched with the toggle spring and is positioned in a spiral gap of the toggle spring.
2. The fixation system of claim 1, wherein the extrusion hole extends through the distal end and the proximal end and has a circular cross-section, the cross-sectional area of the extrusion hole gradually decreasing along the extension direction of the extrusion hole;
the extrusion piece is conical or truncated cone-shaped and is matched with the extrusion hole.
3. The fixing system according to claim 2, wherein a stopper structure is provided between the sheath body and the pressing member in an extending direction of the pressing hole;
the limiting structure is provided with a plurality of limiting gears, and the extrusion piece can slide among the limiting gears relative to the sheath body.
4. The fixation system of claim 3, wherein the limiting structure comprises a first limiting groove, a second limiting groove, and an elastic limiting member engaged with the first limiting groove and the second limiting groove;
the first limit groove is arranged on the sheath body, and the second limit groove is arranged on the extrusion piece.
5. The fixing system according to claim 4, wherein a slide-out groove is further provided between the sheath body and the pressing member in the extending direction of the pressing hole;
the sliding groove is located at a plurality of limiting gears and can be matched with the elastic limiting part to enable the extrusion piece to slide out of the extrusion hole.
6. The fixing system according to claim 5, wherein the first position-limiting grooves are provided in plural for forming a plurality of position-limiting stages, and the second position-limiting grooves are provided in a smaller number than the first position-limiting grooves;
the sliding-out groove is formed in the sheath body, and the first limiting grooves are communicated with the sliding-out groove;
the elastic limiting piece is arranged in the second limiting groove.
7. The fastening system of claim 5, wherein the resilient retainer is spherical and the first and second retainer grooves are spherical grooves.
8. A fixation system as claimed in claim 5, wherein the extrusion is provided with a twist for rotation.
9. The securing system of claim 1, wherein the pressure monitoring assembly further comprises a limiting guide post connected to the base, the toggle spring being sleeved on the limiting guide post.
10. The fixing system according to claim 1, wherein the piezoelectric vibrator comprises a piezoelectric wafer and a metal substrate which are connected with each other, one end of the metal substrate is fixed on the base, the other end of the metal substrate is located in a spiral gap of the toggle spring, and a wedge-shaped arc structure matched with the toggle spring is arranged on the metal substrate.
11. The fixation system according to any one of claims 1 to 10, wherein a scale indicating line for determining the sliding distance of the pressing member is provided on the sheath body.
12. The fixation system of any one of claims 1 to 10, wherein the sheath is provided with a plurality of bone lengthening holes.
13. The fixation system of any one of claims 1-10, wherein a guide arc is disposed between the lateral arc surface and the distal end.
14. The fixation system of any one of claims 1-10, further comprising a mounting bracket and a post rod disposed on the mounting bracket;
the mounting bracket is connected to the proximal end, and the extrusion piece is provided with a top groove matched with the ejector rod.
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| CN202111638295.1A CN113974730B (en) | 2021-12-30 | 2021-12-30 | Fixing system |
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| CN115836933B (en) * | 2023-02-17 | 2023-09-01 | 北京理贝尔生物工程研究所有限公司 | Intervertebral fusion device |
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| US6746483B1 (en) * | 2000-03-16 | 2004-06-08 | Smith & Nephew, Inc. | Sheaths for implantable fixation devices |
| US8062334B2 (en) * | 2004-06-02 | 2011-11-22 | Kfx Medical Corporation | Suture anchor |
| DE102005009492A1 (en) * | 2005-02-24 | 2006-08-31 | Lob, Günter, Prof. Dr. med. | Fixing element for fractured bone, comprising wedge part with grooves for accommodation of thread or wire |
| CN202313524U (en) * | 2011-11-16 | 2012-07-11 | 刘增海 | Deep knotter capable of measuring in-vivo pressure |
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| US20170150886A1 (en) * | 2015-11-30 | 2017-06-01 | Chia-Wei Lin | Force detecting apparatus |
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