CN101810507A

CN101810507A - Expanding type vertebral body shaper

Info

Publication number: CN101810507A
Application number: CN 201010160145
Authority: CN
Inventors: 丁亮华; 胡任民; 高志良; 曹志达
Original assignee: Changzhou Waston Medical Appliance Co Ltd
Current assignee: Changzhou Huasen Medical Instrument Co.,Ltd.
Priority date: 2010-04-29
Filing date: 2010-04-29
Publication date: 2010-08-25
Anticipated expiration: 2030-04-29
Also published as: CN101810507B

Abstract

The invention relates to an expanding type vertebral body shaper, comprising a mandrel, an ejector sleeve and a propped-open ball, wherein the ejector sleeve is sleeved on the mandrel; the propped-open ball is made from developer doped with high polymer medical plastics; the left end of the propped-open ball is fixed on the left end head of the mandrel, and the right end thereof is fixedly connected with the left end head of the ejector sleeve in a detachable manner; when the ejector sleeve is arranged at the right side of the mandrel, the connecting bars of the propped-open ball main body are in an unfolded state, and the connecting bars of the propped-open ball main body are in a curled state when the ejector sleeve is arranged at the left side of the mandrel. The invention can be added with a protection jacket which comprises a sleeve and a latex coat, the latex coat is provided with a sealed left end and a right opening, the right section of the latex coat covers the outside of the sleeve, and the left section thereof is arranged at the left of the left end of the sleeve, thus being a latex rubber nipple which is propped open inside. The invention also can be added with a gun-shaped casing and a control component to simplify the expanding operation of the propped-open ball. The expanding type vertebral body shaper is convenient, safe and reliable.

Description

Expanding type vertebral body shaper

Technical field

The present invention relates to a kind of medical apparatus and instruments of bone surgery, be particularly useful for treating compression fracture of vertabral body.

Background technology

The long-term calcium deficiency of human body can cause osteoporosis, and serious meeting causes fracture.The compression fracture of vertabral body that causes for osteoporosis, traditional expectant treatment method is emphasized to lie up, but quickly and effectively reduction of patient continue, serious pain, and behind patient's out-of-bed activity owing to hinder the further compression of vertebra, pain and kyphosis deformity increase the weight of, and cause the thoracic cavity volume to dwindle, dysfunction of ventilation, chronic hypoxia, the cardio-pulmonary function obstacle, mortality rate obviously raises.In recent years, percutaneous vertebroplasty and the balloon expandable kyphoplasty art that grows up on this basis have Wicresoft, rapidly alleviating pain, substantially improve advantage such as kyphosis deformity, for the treatment of this refractory illness opens up a new way.

The percutaneous vertebroplasty is to inject bone cement in the pathological changes vertebral body, strengthens vertebral body intensity to reach, and eliminates or alleviates flank pain, the purpose that the prevention vertebral body fractures once more.Balloon expandable kyphoplasty art is that special high pressure resistant little sacculus is sent in the vertebral body spongy bone, and the pressure that utilizes balloon expandable to produce recovers vertebral height, corrects kyphosis deformity, at last bone cement is injected in the cavity that is produced behind the balloon expandable.This method can be recovered vertebral height again, and it is protruding to alleviate the back, and recover the normal spinal column line of force, but also exist all problems, as: complex operation, sacculus break easily (adding up disruptive probability up to 47%) through expert investigation.Though can change after sacculus breaks, continue operation, inject the developing agent that is used to observe the balloon expandable situation in the sacculus seepage can take place, and developing agent is deleterious to human body.

Chinese patent literature CN1755333A discloses a kind of metal tennis balled vertebrae shaping apparatus, replace sacculus with wire netting ball, avoid sacculus to be punctured by sharp keen bone edge, but wire netting ball is in extraction, and the bone edge that is protruded easily catches on, and causes extracting out difficulty, fracture of wire is left in vivo, give making troubles of operation, and it does not possess the mechanism of control wire netting ball expansion, it is convenient inadequately to operate.

Summary of the invention

The purpose of this invention is to provide expanding type vertebral body shaper a kind of easy to use, safe and reliable.

A kind of technical scheme that realizes the object of the invention is a kind of expanding type vertebral body shaper, comprises mandrel, ejector sleeve and struts ball; Ejector sleeve is a hollow pipe, is enclosed within on the mandrel; Strutting ball is the integral piece of being made by macromolecule medical plastic admixture developing agent; Strutting bag draws together and struts the ball main body, is positioned at the clamping head of left end and is positioned at the connection-peg of right-hand member; Strut the left part of ball cover, and strut ball and be fixed on the left end head of mandrel, strut ball and fixedly connected with the removable grafting of left end head of ejector sleeve by its connection-peg by its clamping cutting ferrule at mandrel; Strut the ball main body and be made up of 6 to 16 joint covers and the connection rib between the adjacent segments cover, the connection rib between each adjacent segments cover has 2 to 4; The joint cover that struts the leftmost side of ball main body links to each other with the clamping head, and the joint cover that struts the rightmost side of ball main body links to each other with connection-peg; When ejector sleeve was positioned at the right side of mandrel, the connection rib that struts the ball main body was in deployed condition; When ejector sleeve was positioned at the left side of mandrel, the connection rib that struts the ball main body was in rolled state, thereby made that strutting ball main body integral body is bulk.

The another kind of technical scheme that realizes the object of the invention is that a kind of expanding type vertebral body shaper comprises mandrel, ejector sleeve, struts ball and protective sleeve; Ejector sleeve is a hollow pipe, is enclosed within on the mandrel; Protective sleeve comprises sleeve pipe and rubber finger sleeve; Sleeve pipe is a hollow circular tube, slightly is coarser than ejector sleeve; Sealing of the left end of rubber finger sleeve and opening to the right, rubber finger sleeve is coated on telescopic outside by its right section, and the left side section of rubber finger sleeve is positioned at the left of telescopic left end, becomes the latex head that can be strutted by elasticity internally; Strutting ball is the integral piece of being made by macromolecule medical plastic admixture developing agent; Strutting bag draws together and struts the ball main body, is positioned at the clamping head of left end and is positioned at the connection-peg of right-hand member; Strut the left part of ball cover, and strut ball and be fixed on the left end head of mandrel, strut ball and fixedly connected with the removable grafting of left end head of ejector sleeve by its connection-peg by its clamping cutting ferrule at mandrel; Strut the ball main body and be made up of 6 to 16 joint covers and the connection rib between the adjacent segments cover, the connection rib between each adjacent segments cover has 2 to 4; The joint cover that struts the leftmost side of ball main body links to each other with the clamping head, and the joint cover that struts the rightmost side of ball main body links to each other with connection-peg; During use, insert from right to left in the sleeve pipe of protective sleeve together with the mandrel and the ball that struts that is in deployed condition, and the left side section that struts ball then stretches in the latex head of rubber finger sleeve by ejector sleeve; At this moment, ejector sleeve is positioned at the right side of mandrel; When the promotion ejector sleeve slides left with respect to mandrel, strut ball and all enter in the latex head, the connection rib that struts the ball main body then is in rolled state, thereby makes that strutting ball main body integral body is bulk, and the latex head is strutted to be bloats shape.

The material of the material of the rubber finger sleeve of above-mentioned protective sleeve for being absorbed by the body.

Another technical scheme that realizes the object of the invention is that a kind of expanding type vertebral body shaper comprises mandrel, ejector sleeve, struts ball, Control Component and housing; The global shape of housing is a rifle shape, its inner cavity that forms, and the left side of the barral of a gun of housing and the junction of pikestaff is provided with handle hole; Mandrel comprises the mandrel main body; Ejector sleeve comprises the ejector sleeve main body, and the ejector sleeve main body is a hollow pipe, is enclosed within on the mandrel main body, thereby makes ejector sleeve to horizontally slip with respect to mandrel; The right-hand member head of the right-hand member of mandrel and the barral of a gun of housing is fixedly linked, and the left end of ejector sleeve and mandrel passes the left end head of the barral of a gun of housing, and stretches out left; Strutting ball is the integral piece of being made by macromolecule medical plastic admixture developing agent; Strutting bag draws together and struts the ball main body, is positioned at the clamping head of left end and is positioned at the connection-peg of right-hand member; Strut the left part of ball cover, and strut ball and be fixed on the left end head of mandrel main body, strut ball and fixedly connected with the removable grafting of left end head of ejector sleeve main body by its connection-peg by its clamping cutting ferrule in the mandrel main body; Strut the ball main body and be made up of 6 to 16 joint covers and the connection rib between the adjacent segments cover, the connection rib between each adjacent segments cover has 2 to 4; The joint cover that struts the leftmost side of ball main body links to each other with the clamping head, and the joint cover that struts the rightmost side of ball main body links to each other with connection-peg; When ejector sleeve was positioned at the right side of mandrel, the connection rib that struts the ball main body was in deployed condition; When ejector sleeve was positioned at the left side of mandrel, the connection rib that struts the ball main body was in rolled state, thereby made that strutting ball main body integral body is bulk; Control Component comprises pushing plate, the panel that resets, connecting rod, handle, the first compression spring, the second compression spring, the 3rd compression spring and gauge tap; The pushing plate and the panel that resets are enclosed within on the ejector sleeve by the through hole that set aperture, top separately is slightly larger than the ejector sleeve external diameter, with ejector sleeve movingly, and pushing plate is positioned at the left side of the panel that resets; The left end of the first compression spring directly or indirectly and the chamber wall Elastic Contact backwards of the inner chamber of the barral of a gun of housing, the right-hand member of the first compression spring and the left surface Elastic Contact of pushing plate, the right flank of pushing plate contacts with the right baffle-plate of housing, thereby makes pushing plate be positioned in the inner chamber of barral of a gun of housing by elasticity on left and right directions; The second compression spring and the 3rd compression spring divide up and down the right flank Elastic Contact by the right baffle-plate of separately left end and housing, the second compression spring and the 3rd compression spring divide up and down by separately the right-hand member left surface Elastic Contact with the panel that resets, reset panel right side top contacts with the right baffle plate of housing, reset panel right side below contacts with the control piece of gauge tap, thereby the feasible panel that resets is positioned in the inner chamber of barral of a gun of housing by elasticity on left and right directions; The handle hole that housing is passed on the top of handle stretches in the housing, and is connected on the housing to the pivot axis that is provided with according to front and back; The left end head of connecting rod and the bottom of pushing plate are rotationally connected, and the right-hand member head of connecting rod and the upper end of handle are rotationally connected; Gauge tap is connected to the pivot axis that is provided with according to front and back with housing, and the control piece of gauge tap is fan-shaped cylinder substantially; During use, perhaps control piece is contacted with the chamber wall up of the inner chamber of the barral of a gun of housing by its plane, left side, and make gauge tap be in neutral gear position, perhaps control piece is contacted by the chamber wall up of its plane, right side with the inner chamber of the barral of a gun of housing, advances gear to put and make gauge tap be in; Be in when advancing gear to put at gauge tap, the panel that resets is provided with according to the mode that top is tilted to the left, its right flank bottom contacts according to the mode that face contacts with the plane, left side of the control piece of gauge tap, its right upper portion contacts according to the mode that line contacts with the right baffle plate of housing, and the panel that resets tightens ejector sleeve on above-below direction; When gauge tap is in neutral gear position, the panel that resets is provided with according to the mode of vertical, its right flank bottom contacts in tangent mode with the circular arc cylinder of the control piece of gauge tap, its right upper portion contacts according to the mode that face contacts with the right baffle plate of housing, and resets and be in the matched in clearance state between panel and the ejector sleeve.

Above-mentioned expanding type vertebral body shaper also comprises ring for fixing; Described housing comprises procapsid and back casing, and procapsid and back casing are the integrated through injection molding part, and both structures are symmetrical substantially; Procapsid comprises fore shell main body, left front baffle plate and right front baffle plate; The fore shell main body comprises fore shell barral of a gun portion, is connected bottom-right fore shell pikestaff portion of fore shell barral of a gun portion and is opened in fore shell barral of a gun portion and the fore shell handle groove in the left side of the junction of fore shell pikestaff portion; The left end head of fore shell barral of a gun portion and right-hand member head all offer 1 semicircular groove; Left front baffle plate and right front baffle plate are connected in the fore shell barral of a gun portion about dividing; Left front baffle plate links to each other with the upper and lower sides of the inner chamber of fore shell barral of a gun portion and the chamber wall of front side; On the left front baffle plate, divide to offer the groove of 2 openings towards the rear up and down, the groove of top is semicircle, and the groove of below is a rectangle; Right front baffle plate links to each other with the chamber wall of the inner chamber upside of fore shell barral of a gun portion; Back casing comprises back cover main body, left back baffle plate and right back baffle plate; The back cover main body comprises back cover barral of a gun portion, is connected bottom-right back cover pikestaff portion of back cover barral of a gun portion and is opened in back cover barral of a gun portion and the back cover handle groove in the left side of the junction of back cover pikestaff portion; The left end head of back cover barral of a gun portion and right-hand member head all offer 1 semicircular groove; Each position of back cover main body is corresponding with the present position and the shape of each corresponding site of fore shell main body; Left back baffle plate, right back baffle plate are connected in the back cover barral of a gun portion about dividing, and the position of above-below direction of living in and left and right directions is corresponding with the position that the left front baffle plate and the right front baffle plate of procapsid are positioned in the fore shell barral of a gun portion; Left back baffle plate links to each other with the upper and lower sides of the inner chamber of back cover barral of a gun portion and the chamber wall of rear side; On the left back baffle plate, divide to offer the groove of 2 openings towards the place ahead up and down, the groove of top is semicircle, and the groove of below is a rectangle; Right back baffle plate links to each other with the chamber wall of the inner chamber upside of back cover barral of a gun portion; The bottom of the pushing plate and the panel that resets is equipped with opening direction groove down; The left end of connecting rod passes the groove of panel bottom that resets, and stretches in the groove of pushing plate bottom, is rotationally connected with the bottom of pushing plate; The first compression spring and the second compression spring all are enclosed within on the ejector sleeve; The first compression spring, pushing plate, the second compression spring and the panel that resets array from left to right; The 3rd compression spring housing is on connecting rod, and at pushing plate with reset between the panel; The central authorities of ring for fixing have circular hole, offer annular groove on the ring for fixing; Ring for fixing by its central circle hole sleeve on ejector sleeve, and be positioned at first the compression spring the left side; Ring for fixing is clipped in the frid place of semi-circular recesses of the left end head of back cover barral of a gun portion by the left and right sides cell wall of its cannelure; The rear portion of first segment in the stage casing of ejector sleeve embeds in the semi-circular recesses of left back baffle plate, in the rectangular recess of the left back baffle plate of a bit of embedding in the left side of connecting rod; Mandrel also comprises the fixed leg on the right-hand member head that is fastened in the mandrel main body, and fixed leg is along circumferentially offering toroidal cavity; The fixed leg of mandrel is clipped in the frid place of semi-circular recesses of the right-hand member head of back cover barral of a gun portion by the left and right sides cell wall of its annular groove; Pushing plate is positioned at the left side of left back baffle plate, and the right flank of pushing plate contacts with the left surface of left back baffle plate; The left end of the first compression spring is fastened in the right-hand member of ring for fixing; The left end of the second compression spring and the right flank of left back baffle plate offset; Under the effect of the second compression spring, the top of the right flank of the panel that resets contacts with the left side of right back baffle plate; The left end of the 3rd compression spring and the right flank Elastic Contact of left back baffle plate; The back cover handle groove of back casing is passed on the top of handle, and is rotationally connected by steady pin and back casing; Procapsid and back casing are oppositely arranged, and both aim at amalgamation mutually and are fixed together and form housing; Fore shell barral of a gun portion and back cover barral of a gun portion constitute the barral of a gun of housing; Fore shell pikestaff portion and back cover pikestaff portion constitute the pikestaff of housing; Fore shell handle groove and back cover handle groove constitute the handle hole of housing; The left back baffle plate of the left front baffle plate of procapsid and back casing constitutes the right baffle-plate of housing; The right back baffle plate of the right front baffle plate of procapsid and back casing constitutes the right baffle plate of housing; Ring for fixing be clipped in by the left and right sides cell wall of its cannelure the left end semi-circular recesses of fore shell barral of a gun portion and back cover barral of a gun portion the left end semi-circular recesses the orifice plate of circular port of the housing left end that forms jointly, first segment in the stage casing of ejector sleeve then is arranged in the circular hole of the formed front apron of semi-circular recesses of the semi-circular recesses of left front baffle plate and left back baffle plate, the a bit of rectangular recess of left front baffle plate and the formed rectangular opening of rectangular recess of left back baffle plate of being arranged in the left side of connecting rod, the fixed leg of mandrel be clipped in by the left and right sides cell wall of its annular groove the right-hand member semi-circular recesses of fore shell barral of a gun portion and back cover barral of a gun portion the right-hand member semi-circular recesses the orifice plate of circular port of the housing right-hand member that forms jointly; The left end of the second compression spring and the 3rd compression spring respectively with the right flank Elastic Contact of the right baffle-plate of housing; The front end of steady pin stretches in the opening key seat backward of procapsid, and handle is rotationally connected by steady pin and procapsid; Each bolt passes procapsid and back casing respectively successively, and nut is enclosed within the afterbody of corresponding bolt separately, and both spin together, thereby makes procapsid and back casing be fixed together.

The fore shell main body of above-mentioned procapsid also comprises the rectangular preceding hole that is opened in the fore shell barral of a gun portion and is located in the fore shell barral of a gun portion and is positioned at the fore shell scale of top, rectangular preceding hole; The back cover main body of back casing also comprises the rectangular metapore that is opened in the back cover barral of a gun portion and is located in the back cover barral of a gun portion and is positioned at the back cover scale of rectangular metapore top; Ejector sleeve also comprises 2 projections, and 2 projections are symmetrical arranged, projection and back projection before being divided into, and preceding projection the past side is fixedly connected on the ejector sleeve main body, and back projection is fixedly connected on the ejector sleeve main body from the rear, and both all are positioned at the right part of ejector sleeve main body; Control Component also comprises 2 handles that reset; 2 handles that reset reset before being divided into handle and after the handle that resets; The rectangular metapore that the back projection of ejector sleeve passes back casing stretches out backward, after the cross section that the handle tight fit is enclosed within ejector sleeve that resets be on the projection of orthogonal back; Procapsid is aimed at back casing after amalgamation is fixed together, and the preceding projection of ejector sleeve passes the rectangular preceding hole of procapsid and stretches out forward, the cross section that the preceding handle tight fit that resets is enclosed within ejector sleeve be orthogonal before on the projection.

Above-mentioned procapsid also comprises 2 front limit blocks; 2 front limit blocks all link to each other with the chamber wall of the front side of fore shell barral of a gun portion, and lay respectively at the both sides up and down in rectangular preceding hole; The position towards the back downside at the left end position of 1 front limit block above being positioned at is the circular arc cylinder, the position towards the back upside at the left end position of 1 front limit block below being positioned at also is the circular arc cylinder, and these 2 circular arc cylinders belong to same semi-cylindrical; Positive stop after back casing also comprises 2; Positive stop all links to each other with the chamber wall of the rear side of back cover barral of a gun portion after 2, and lays respectively at the both sides up and down of rectangular metapore; The position towards preceding downside at the left end position of positive stop is the circular arc cylinder after 1 above being positioned at, the position towards front upper side at the left end position of positive stop also is the circular arc cylinder after 1 below being positioned at, and these 2 circular arc cylinders belong to same semi-cylindrical; The stage casing of ejector sleeve be arranged in the space that the face of cylinder centered under the arc cylinder that the second right-hand segment of first segment is positioned at positive stop behind 2 front limit blocks and 2.

Above-mentioned gauge tap also comprises driving lever and switch rotating shaft, the control piece of gauge tap is the integrated through injection molding part, form by consistent fanning strip that is oppositely arranged of two block sizes and circumferential body portion, two fanning strips constitute control piece at the drift angle place by the circular column body is continuous, and the cavity geometry of circular column body is arc; Connecting rod is positioned at the centre of two fanning strips of control piece; The cross section of the middle leading portion of switch rotating shaft is arc for what match with the cavity geometry of the circular column body of control piece, and the cross section of back segment be a circle; The rear end and the back casing of switch rotating shaft are rotationally connected, and are positioned at the lower right of right back baffle plate; The circumferential body portion of control piece is passed in the stage casing of switch rotating shaft, and is upwards spacing mutually in week with control piece; Procapsid is aimed at back casing after amalgamation is fixed together, and the front end of switch rotating shaft passes procapsid, stretch out forward, and the front end of switch rotating shaft and procapsid is rotationally connected; Driving lever is enclosed within on the front end of switch rotating shaft by its opening arc blind hole tight fit backwards, thereby both are upwards spacing mutually in week, make driving lever and control piece together to rotate with respect to housing.

A kind of prioritization scheme of the technical program is that above-mentioned expanding type vertebral body shaper also comprises protective sleeve; Protective sleeve comprises union joint, connector, sleeve pipe and rubber finger sleeve; Union joint is a moulding, about the central authorities of union joint are provided with to through hole; Sleeve pipe is a horizontally disposed hollow circular tube, slightly is coarser than ejector sleeve; Sleeve pipe is the metal insert of union joint, and telescopic right-hand member embeds in the union joint; Sealing of the left end of rubber finger sleeve and opening to the right, rubber finger sleeve is coated on telescopic outside by its right section, and the left side section of rubber finger sleeve is positioned at the left of telescopic left end, becomes the latex head that can be strutted by elasticity internally; During use, insert from right to left in the sleeve pipe of protective sleeve together with the mandrel and the ball that struts that is in deployed condition, and the left side section that struts ball then stretches in the latex head of rubber finger sleeve by ejector sleeve; Protective sleeve is enclosed within on the ring for fixing by its union joint, and is fixedly connected on the ring for fixing by its connector; When the promotion ejector sleeve slides left with respect to mandrel, strut ball and all enter in the latex head, the connection rib that struts the ball main body then is in rolled state, thereby makes that strutting ball main body integral body is bulk, and the latex head is strutted to be bloats shape.

The present invention has positive effect.

(1) ball that struts of expanding type vertebral body shaper of the present invention is made by macromolecule medical plastic admixture developing agent, has made things convenient in the operation observation to the situation of strutting, and rational in infrastructure, and expansion effect is good, and is safe and reliable.

(2) expanding type vertebral body shaper of the present invention can install protective sleeve additional, in the expanding type vertebral body shaper process of expansion, is subjected to the telescopic of fairlead and stops owing to strut ball, only progressively piles up at latex head place so strut ball, and the latex head struts to sphere the most at last.This structure has fundamentally solved wire netting ball or sacculus in extraction, and the bone edge that is protruded easily catches on, and causes extracting out the problem of difficulty.The expanding type vertebral body shaper that installs additional behind the protective sleeve is safe and reliable, has solved patient's trouble and worry when guaranteeing the high efficiency of operation.

(3) expanding type vertebral body shaper of the present invention is the rifle formula, and its Control Component is simple for structure, can make to strut ball and progressively expand, by repeatedly promptly handle make that strutting ball finishes expansion, overall process need not unnecessary operation, extremely easy to use, improved the efficient of operation greatly.

(4) expanding type vertebral body shaper of the present invention is by pushing neutral gear position to switch, and the pulling handle that resets makes and struts ball and reset, and is easy and simple to handle, resets rapidly, safe.Be printed on scale on the housing of expanding type vertebral body shaper, convenient control struts the degrees of expansion of ball, can calculate the volume size of the portion of strutting.

(5) protective sleeve in the expanding type vertebral body shaper of the present invention can be made by the human body absorbable material; after extracting expanding type vertebral body shaper out; directly in the sacculus that the latex capitiform by protective sleeve becomes, inject bone cement; re-using special tool(s) separates sacculus and stays in body with the sleeve pipe of protective sleeve; operation back sacculus is absorbed by the body gradually, makes that operation is more safe and reliable.

Description of drawings

Fig. 1 is a kind of perspective view of expanding type vertebral body shaper of the present invention.

Fig. 2 is the perspective exploded view of the expanding type vertebral body shaper among Fig. 1.

Fig. 3 is the perspective exploded view that the expanding type vertebral body shaper among Fig. 1 is observed from the rear.

Fig. 4 is the perspective view of the critical piece of the expanding type vertebral body shaper among Fig. 1.

Fig. 5 is the perspective exploded view of the critical piece among Fig. 4.

Fig. 6 is the perspective exploded view after the critical piece among Fig. 4 is loaded onto protective sleeve.

Fig. 7 be expanding type vertebral body shaper among Fig. 1 from A to the internal structure sketch map of observing.

Fig. 8 is the internal structure sketch map of Fig. 7 support after kicking off to strut.

Internal structure sketch map when Fig. 9 is in neutral gear for the expanding type vertebral body shaper among Fig. 8.

Figure 10 is the sketch map after the amplification at the B place among Fig. 8.

Figure 11 is the structure for amplifying sketch map of the control piece of the gauge tap among Fig. 8.

Figure 12 is a kind of perspective view of protective sleeve of the present invention.

Figure 13 be among Figure 12 protective sleeve C-C to cross-sectional view.

Figure 14 is the perspective view after the expanding type vertebral body shaper among Fig. 1 is loaded onto protective sleeve.

Figure 15 is the perspective view of Figure 14 support after kicking off to strut.

Labelling in the above-mentioned accompanying drawing is as follows: mandrel 1, mandrel main body 11, fixed leg 12; annular groove 12-1, ejector sleeve 2, ejector sleeve main body 21; projection 22, preceding projection 22-1, back projection 22-2; strut ball 3, ring for fixing 4, cannelure 4-1; stopper slot 4-2, Control Component 5, pushing plate 51; the panel 52 that resets, connecting rod 53, handle 54; steady pin 54-1, the first compression spring, 55, the second compression springs 56; the 3rd compression spring 57, gauge tap 58, control piece 58-1; driving lever 58-2, switch rotating shaft 58-3, handle 59 resets; before reset the handle 59-1, after reset the handle 59-2, protective sleeve 6; union joint 61, connector 62, sleeve pipe 63; rubber finger sleeve 64, latex head 64-1, procapsid 7; fore shell barral of a gun portion 71, fore shell pikestaff portion 72, left front baffle plate 73; right front baffle plate 74, front limit block 75, fore shell handle groove 76; rectangular preceding hole 77, fore shell scale 78, back casing 8; back cover barral of a gun portion 81; back cover pikestaff portion 82, left back baffle plate 83, right back baffle plate 84; back positive stop 85; back cover handle groove 86, rectangular metapore 87, back cover scale 88; bolt 100, nut 101.

The specific embodiment

The orientation of the specific embodiment of the present invention is described according to orientation shown in Figure 8.

(embodiment 1) sees that Fig. 4 and Fig. 5, the expanding type vertebral body shaper of present embodiment comprise mandrel 1, ejector sleeve 2 and strut ball 3.

Mandrel 1 comprises mandrel main body 11 and is fastened in fixed leg 12 on the right-hand member head of mandrel main body 11.Mandrel main body 11 is a steel wire.Fixed leg 12 is along circumferentially offering toroidal cavity 12-1.

Ejector sleeve 2 comprises ejector sleeve main body 21 and 2 projections 22, ejector sleeve main body 21 is a hollow steel tube, 2 projections 22 are symmetrical arranged, projection 22-1 and back projection 22-2 before being divided into, preceding projection 22-1 is fixedly connected on the ejector sleeve main body 21 from the place ahead, back projection 22-2 is fixedly connected on the ejector sleeve main body 21 from the rear, and both all are positioned at the right part of ejector sleeve main body 21.Ejector sleeve 2 is enclosed within on the mandrel main body 11 of mandrel 1 by its ejector sleeve main body 21, thereby makes ejector sleeve 2 to horizontally slip with respect to mandrel 1.

Strutting ball 3 is integral pieces of being made by macromolecule medical plastic admixture developing agent.Strutting ball 3 comprises and struts the ball main body, is positioned at the clamping head of left end and is positioned at the connection-peg of right-hand member.Strut ball 3 and be enclosed within the left part of mandrel main body 11, and strut ball 3 and be fixed on the left end head of mandrel main body 11, strut ball 3 and fixedly connected with the removable grafting of left end head of ejector sleeve main body 21 by its connection-peg by its clamping cutting ferrule.Strut the ball main body and be made up of 10 joint covers and the connection rib between the adjacent segments cover, the connection rib between each adjacent segments cover has 3.The joint cover that struts the leftmost side of ball main body links to each other with the clamping head, and the joint cover that struts the rightmost side of ball main body links to each other with connection-peg.

When ejector sleeve 2 was positioned at the right side of mandrel 1, the connection rib that struts the ball main body was in deployed condition.When ejector sleeve 2 was positioned at the left side of mandrel 1, the connection rib that struts the ball main body was in rolled state, thereby made that strutting ball main body integral body is bulk, and a picture spheroid (referring to Figure 10) struts ball so be referred to as.

The expanding type vertebral body shaper of present embodiment is caught mandrel 1 in use on the other hand, and another hands is caught ejector sleeve 2.Keep mandrel 1 transfixion, ejector sleeve 2 is turned left to be pushed away, thereby makes the netted ball 3 that struts constantly turn left and pile up, and up to can't promoting, the ball 3 that struts of this moment is bulk, and the expanding type vertebral body shaper expansion is finished.When expanding type vertebral body shaper resets, keep mandrel 1 transfixion, ejector sleeve 2 is turned right draw, thereby make ejector sleeve 2 move right with respect to mandrel 1, strutting ball 3, to recover former cylindricality netted.

(embodiment 2) see Fig. 6, and the remainder of the expanding type vertebral body shaper of present embodiment is identical with embodiment 1, and difference is: also comprise protective sleeve 6.Protective sleeve 6 comprises sleeve pipe 63 and rubber finger sleeve 64.Sleeve pipe 63 is a horizontally disposed hollow circular tube, slightly is coarser than ejector sleeve 2.Sealing of the left end of rubber finger sleeve 64 and opening to the right, rubber finger sleeve 64 is coated on telescopic outside by its right section, and the left side section of rubber finger sleeve 64 is positioned at the left of the left end of sleeve pipe 63, becomes the latex head 64-1 that can be strutted by elasticity internally.

The expanding type vertebral body shaper of present embodiment is inserted in the sleeve pipe 63 of protective sleeve 6 together with the mandrel 1 and the ball 3 that struts that is in deployed condition from right to left by ejector sleeve 2 in use, and the left side section that struts ball 3 then stretches in the latex head 64-1 of rubber finger sleeve 64.Expanding type vertebral body shaper is in process of expansion, promote ejector sleeve 2 and slide left with respect to mandrel 1, strut ball 3 and all enter in the latex head 64-1, the connection rib that struts the ball main body then is in rolled state, thereby make that strutting ball main body integral body is bulk, latex head 64-1 is strutted to be bloats shape.

(embodiment 3) see that Fig. 1, the expanding type vertebral body shaper of present embodiment comprise mandrel 1, ejector sleeve 2, strut ball 3, ring for fixing 4, Control Component 5 and housing.

See Fig. 2 and Fig. 3, housing comprises procapsid 7 and back casing 8, and procapsid 7 and back casing 8 are the integrated through injection molding part, and both structures are symmetrical substantially.

Procapsid 7 comprises fore shell main body, left front baffle plate 73, right

front baffle plate

74 and 2 front limit blocks 75.The fore shell main body comprises fore shell barral of a gun portion 71, be connected bottom-right fore shell pikestaff portion of fore shell barral of a gun portion 71 72, be opened in fore shell barral of a gun portion 71 and the left side of the junction of fore shell pikestaff portion 72 fore shell handle groove 76, be opened in the rectangular preceding hole 77 in the fore shell barral of a gun portion 71 and be located in the fore shell barral of a gun portion 71 and be positioned at the fore shell scale 78 of 77 tops, rectangular preceding hole.The left end head of fore shell barral of a gun portion 71 and right-hand member head all offer 1 semicircular groove.

Left front baffle plate 73 and right front baffle plate are connected about 74 minutes in the fore shell barral of a gun portion 71.Left front baffle plate 73 links to each other with the upper and lower sides of the inner chamber of fore shell barral of a gun portion 71 and the chamber wall of front side.On the left front baffle plate 73, divide to offer the groove of 2 openings towards the rear up and down, the groove of top is semicircle, and the groove of below is a rectangle.Right front baffle plate 74 links to each other with the chamber wall of the inner chamber upside of fore shell barral of a gun portion 71.2 front limit blocks 75 all link to each other with the chamber wall of the front side of fore shell barral of a gun portion 71, and lay respectively at the both sides up and down in rectangular preceding hole 77.The position towards the back downside at the left end position of 1 front limit block 75 above being positioned at is the circular arc cylinder, the position towards the back upside at the left end position of 1 front limit block 75 below being positioned at also is the circular arc cylinder, and these 2 circular arc cylinders belong to same semi-cylindrical.

Back casing 8 comprises positive stop 85 behind back cover main body, left back baffle plate 83, right back baffle plate 84 and 2.The back cover main body comprises back cover barral of a gun portion 81, be connected bottom-right back cover pikestaff portion of back cover barral of a gun portion 81 82, be opened in back cover barral of a gun portion 81 and the left side of the junction of back cover pikestaff portion 82 back cover handle groove 86, be opened in the rectangular metapore 87 in the back cover barral of a gun portion 81 and be located in the back cover barral of a gun portion 81 and be positioned at the back cover scale 88 of rectangular metapore 87 tops.The left end head of back cover barral of a gun portion 81 and right-hand member head all offer 1 semicircular groove.Each position of back cover main body is corresponding with the present position and the shape of each corresponding site of fore shell main body.

Left back baffle plate 83, right back baffle plate are connected about 84 minutes in the back cover barral of a gun portion 81, and the position of above-below direction of living in and left and right directions is corresponding with the position that the left front baffle plate 73 and the right front baffle plate 74 of procapsid 7 are positioned in the fore shell barral of a gun portion 71.Left back baffle plate 83 links to each other with the upper and lower sides of the inner chamber of back cover barral of a gun portion 81 and the chamber wall of rear side.On the left back baffle plate 83, divide to offer the groove of 2 openings towards the place ahead up and down, the groove of top is semicircle, and the groove of below is a rectangle.Right back baffle plate 84 links to each other with the chamber wall of the inner chamber upside of back cover barral of a gun portion 81.Positive stop 85 all links to each other with the chamber wall of the rear side of back cover barral of a gun portion 81 after 2, and lays respectively at the both sides up and down of rectangular metapore 87.The position towards preceding downside at the left end position of positive stop 85 is the circular arc cylinder after 1 above being positioned at, the position towards front upper side at the left end position of positive stop 85 also is the circular arc cylinder after 1 below being positioned at, and these 2 circular arc cylinders belong to same semi-cylindrical.

See Fig. 4 and Fig. 5, the mandrel 1 of present embodiment, ejector sleeve 2 and strut ball 3 and adopt the corresponding part identical with embodiment 1 structure.

When ejector sleeve 2 was positioned at the right side of mandrel 1, the connection rib that struts the ball main body was in deployed condition.When ejector sleeve 2 was positioned at the left side of mandrel 1, the connection rib that struts the ball main body was in rolled state, thereby made that strutting ball main body integral body is bulk, and spheroid of picture struts ball (seeing Fig. 8 and Figure 10) so be referred to as.

See Fig. 2 and Fig. 3, Control Component 5 comprises pushing plate 51, the panel 52 that resets, connecting rod 53, handle 54, the first compression spring 55, the second compression spring 56, the 3rd compression spring 57,

gauge tap

58 and 2 handles 59 that reset.

The top of the pushing plate 51 and the panel 52 that resets is provided with the through hole that the aperture is slightly larger than ejector sleeve 2 external diameters.The bottom of the pushing plate 51 and the panel 52 that resets is equipped with opening direction groove down.Pushing plate 51 and the through hole of the panel 52 that resets by separately are enclosed within on the ejector sleeve 2, and with ejector sleeve 2 movingly.The first compression spring 55 and the second compression spring 56 also all are enclosed within on the ejector sleeve 2.The first compression spring 55, pushing plate 51, the second compression spring 56 and the panel 52 that resets array from left to right.

The left end of connecting rod 53 passes the groove of panel 52 bottoms that resets, and stretches in the groove of pushing plate 51 bottoms, is rotationally connected with the bottom of pushing plate 51.The 3rd compression spring 57 is enclosed within on the connecting rod 53, and at pushing plate 51 with reset between the panel 52.The right-hand member head of connecting rod 53 and the upper end of handle 54 are rotationally connected.

See Fig. 2, Fig. 3 and Fig. 7, the central authorities of ring for fixing 4 have circular hole, offer annular groove 4-1 on the ring for fixing 4.Ring for fixing 4 by its central circle hole sleeve on ejector sleeve 2, and be positioned at first the compression spring 55 the left side.Ring for fixing 4 is clipped in the frid place of semi-circular recesses of the left end head of back cover barral of a gun portion 81 by the left and right sides cell wall of its cannelure 4-1.

The rear portion of first segment in the stage casing of ejector sleeve 2 embeds in the semi-circular recesses of left back baffle plate 83, and the rear portion of second segment in the stage casing of ejector sleeve 2 is arranged in the affiliated space that semi-cylindrical centered on of arc cylinder of positive stop 85 after 2.

In the rectangular recess of the left back baffle plate 83 of a bit of embedding in the left side of connecting rod 53.

The fixed leg 12 of mandrel 1 is clipped in the frid place of semi-circular recesses of the right-hand member head of back cover barral of a gun portion 81 by the left and right sides cell wall of its annular groove 12-1.

Pushing plate 51 is positioned at the left side of left back baffle plate 83, and the right flank of pushing plate 51 contacts with the left surface of left back baffle plate 83.The left end of the first compression spring 55 is fastened in the right-hand member of ring for fixing (4), the right-hand member of the first compression spring 55 and the left surface Elastic Contact of pushing plate 51.

The left end of the second compression spring 56 and the right flank Elastic Contact of left back baffle plate 83, the left surface Elastic Contact of its right-hand member and the panel 52 that resets.Under the effect of the second compression spring, the top of the right flank of the panel 52 that resets contacts with the left side of right back baffle plate 84.

The left end of the 3rd compression spring 57 and the right flank Elastic Contact of left back baffle plate 83, the left surface Elastic Contact of its right-hand member and the panel 52 that resets.

The back cover handle groove 86 of back casing 8 is passed on the top of handle 54, and is rotationally connected by steady pin 54-1 and back casing 8.

See Fig. 1 to Fig. 3, gauge tap 58 comprises control piece 58-1, driving lever 58-2 and switch rotating shaft 58-3.Control piece 58-1 is the integrated through injection molding part, is made up of consistent fanning strip that is oppositely arranged of two block sizes and circumferential body portion, and two fanning strips constitute control piece 58-1 at the drift angle place by the circular column body is continuous, and the cavity geometry of circular column body is arc.Connecting rod 53 is positioned at the centre of two fanning strips of control piece 58-1.The cross section of the middle leading portion of switch rotating shaft 58-3 is arc for what match with the cavity geometry of the circular column body of control piece 58-1, and the cross section of back segment be a circle.Rear end and the back casing 8 of switch rotating shaft 58-3 are rotationally connected, and are positioned at the lower right of right back baffle plate 84.The circumferential body portion of control piece 58-1 is passed in the stage casing of switch rotating shaft 58-3, and is upwards spacing mutually in week with control piece 58-1.

See Fig. 7, be in when advancing gear to put that control piece 58-1 is contacted with the chamber wall up of the inner chamber of the barral of a gun of housing by its plane, right side 58-1b at gauge tap 58.The panel 52 that resets is provided with according to the mode that top is tilted to the left, the bottom of its right flank contacts according to the mode that face contacts with plane, the left side 58-1a of control piece 58-1, its right upper portion contacts according to the mode that line contacts with the right back baffle plate 84 of back casing 8, and the panel 52 that resets tightens ejector sleeve 2 on above-below direction,, that is on left and right directions, make ejector sleeve 2 not move from left to right.

See Fig. 9, when gauge tap 58 was in neutral gear position, control piece 58-1 was contacted with the chamber wall up of the inner chamber of the barral of a gun of housing by its left side plane 58-1a.The panel 52 that resets is provided with according to the mode of vertical, its right flank bottom contacts in tangent mode with the circular arc cylinder 58-1c of the control piece 58-1 of gauge tap 58, its right upper portion contacts according to the mode that face contacts with the right back baffle plate 84 of back casing 8, and resets and be in the matched in clearance state between panel 52 and the ejector sleeve 2.

2 handles 59 that reset reset before being divided into handle 59-1 and after the handle 59-2 that resets.The rectangular metapore 87 that the back projection 22-2 of ejector sleeve 2 passes back casing 8 stretches out backward, after the cross section that handle 59-2 tight fit is enclosed within ejector sleeve 2 that resets be on the orthogonal back projection 22-2.

Procapsid 7 is oppositely arranged with back casing 8, and both aim at amalgamation mutually and form housing, and the inside of housing forms cavity.Fore shell barral of a gun portion 71 and back cover barral of a gun portion 81 constitute the barral of a gun of housing; Fore shell pikestaff portion 72 and back cover pikestaff portion 82 constitute the pikestaff of housing; Fore shell handle groove 76 and back cover handle groove 86 constitute the handle hole of housing; The left front baffle plate 73 of procapsid 7 and the left back baffle plate of back casing 8 83 constitute the right baffle-plate of housing; The right front baffle plate 74 of procapsid 7 and the right back baffle plate of back casing 8 84 constitute the right baffle plate of housing.And this moment, ring for fixing 4 was clipped in the orifice plate of circular port of the common housing left end that forms of left end semi-circular recesses institute of the left end semi-circular recesses of fore shell barral of a gun portion 71 and back cover barral of a gun portion 81 by the left and right sides cell wall of its cannelure 4-1, first segment in the stage casing of ejector sleeve 2 then is arranged in the circular hole of the formed front apron of semi-circular recesses of the semi-circular recesses of left front baffle plate 73 and left back baffle plate 83, second segment in the stage casing of ejector sleeve 2 then is arranged in the space that the face of cylinder centered under the arc cylinder of positive stop 85 behind 2 front limit blocks 75 and 2, the a bit of rectangular recess of left front baffle plate 73 and the formed rectangular opening of rectangular recess of left back baffle plate 83 of being arranged in the left side of connecting rod 53, the fixed leg 12 of mandrel 1 be clipped in by the left and right sides cell wall of its annular groove 12-1 the right-hand member semi-circular recesses of fore shell barral of a gun portion 71 and back cover barral of a gun portion 81 the right-hand member semi-circular recesses the orifice plate of circular port of the housing right-hand member that forms jointly.

The right flank of pushing plate 51 contacts with the left surface of the right baffle-plate of housing.The left end of the second compression spring 56 and the 3rd compression spring 57 respectively with the right flank Elastic Contact of the right baffle-plate of housing.

Under the effect of the second compression spring 56, the top of the right flank of the panel 52 that resets contacts with the left side of the right baffle plate of housing.

The back cover handle groove 86 that back casing 8 is passed on the top of handle 54 forms in the handle hole with the fore shell handle groove 76 of procapsid 7, and the front end of steady pin 54-1 stretches in the opening key seat backward of procapsid 7, and is rotationally connected with procapsid 7.

The front end of switch rotating shaft 58-3 passes procapsid 7, stretch out forward, and the front end of switch rotating shaft 58-3 and procapsid 7 is rotationally connected.Driving lever 58-2 is enclosed within on the front end of switch rotating shaft 58-3 by its opening arc blind hole tight fit backwards, thereby both are upwards spacing mutually in week, make driving lever 58-2 and control piece 58-1 together to rotate with respect to housing.

The preceding projection 22-1 of ejector sleeve 2 passes the rectangular preceding hole 77 of procapsid 7 and stretches out forward, and the cross section that the preceding handle 59-1 tight fit that resets is enclosed within ejector sleeve 2 is on the orthogonal preceding projection 22-1.

8 bolts 100 pass the afterbody that procapsid 7 and 8,8 nuts 101 of back casing are enclosed within corresponding bolt 100 separately respectively successively, and both spin together, thereby make procapsid 7 and back casing 8 be fixed together.

The expanding type vertebral body shaper of present embodiment in use, the driving lever 58-2 of its gauge tap 58 is usually located at shown in Figure 1 towards right-hand position, the plane, right side of the fanning strip of coupled control piece 58-1 contacts with the downside of the cavity of housing, and the expanding type vertebral body shaper of this moment is in and advances shelves.One hand is caught the pikestaff and the handle 54 of housing, and the handle 54 of holding with a firm grip makes handle 54 draw close to pikestaff, and handle 54 rotates counterclockwise, and drivening rod 53 is moved to the left, thereby the bottom that promotes pushing plate 51 is moved to the left.The top of pushing plate 51 is tilted to the right, and the gap between the center through hole of pushing plate 51 and the ejector sleeve 2 diminishes gradually, until making pushing plate 51 clamp ejector sleeve 2, is being with ejector sleeve 2 to be moved to the left then.When ejector sleeve 2 has just begun to be moved to the left, drive the panel 52 that resets that original top is tilted to the left by force and clockwise rotate a less angle, on above-below direction, become the state that produces the gap and make between the center through hole of the panel 52 that resets and the ejector sleeve 2, thereby make ejector sleeve 2 break away to reset panel 52 inhibition to ejector sleeve 2 on above-below direction to slide left with respect to the panel 52 that resets by mutual clamped condition.Along with handle 54 is rotated counterclockwise when contacting with pikestaff, stop operating, thereby ejector sleeve 2 with respect to reset panel 52 and shell to left movement one segment distance.At this moment, because still being in the position that is tilted to the right, the top of pushing plate 51 clamps ejector sleeve 2, so ejector sleeve 2 is no longer to left movement, can not move right, the panel 52 that resets then slides to the right with respect to ejector sleeve 2 under the effect of the second compression spring 56 and the 3rd compression spring 57, return to initial obliquity, and on above-below direction, clamp ejector sleeve 2.

Release handle 54 clamps ejector sleeve 2 because the top of panel 52 of resetting is in the position that is tilted to the left, and makes ejector sleeve 2 transfixions, and under the effect of the first compression spring 55, pushing plate 51 rotates counterclockwise with respect to immobilized ejector sleeve 2, returns to the upright position.Because the lower rightward of pushing plate 51 moves, make connecting rod 53 simultaneously, clockwise rotate, open up into the origin-location thereby drive handle 54 to right translation.

Constantly back and forth above promptly, the operation of release handle 54, ejector sleeve 2 is step by step toward moving left, thereby makes the netted ball 3 that struts constantly turn left and pile up, and can't press up to handle 54, the ball 3 that struts of this moment is the bulk (see figure 8), and the expanding type vertebral body shaper expansion is finished.

When expanding type vertebral body shaper resets, at first the driving lever 58-2 of gauge tap 58 is pushed position towards the top, driving lever 58-2 drives control piece 58-1 and together rotates counterclockwise, thereby the panel 52 that promotes to reset clockwise rotates, arrive vertical position, the expanding type vertebral body shaper of this moment is in the neutral gear (see figure 9).On above-below direction, produce the gap between center through hole of panel 52 of resetting and the ejector sleeve 2, the without hindrance effect of motion of 52 pairs of ejector sleeves 2 of panel resets, the handle 59 that resets of pulling to the right makes ejector sleeve 2 move right with respect to mandrel 1 and housing, and strutting ball 3, to recover former cylindricality netted.

(embodiment 4) see Figure 12 and Figure 13, and the remainder of the expanding type vertebral body shaper of present embodiment is identical with embodiment 3, and difference is: also comprise protective sleeve 6, the expanding type vertebral body shaper of embodiment 3 is then as the expanding type vertebral body shaper main body.Protective sleeve 6 comprises union joint 61, connector 62, sleeve pipe 63 and rubber finger sleeve 64.Union joint 61 is a moulding, about the central authorities of union joint 61 are provided with to through hole.Sleeve pipe 63 is a horizontally disposed hollow circular tube, slightly is coarser than ejector sleeve 2.Sleeve pipe 63 is the metal insert of union joint 61, and the right-hand member of sleeve pipe 63 embeds in the union joint 61.Sealing of the left end of rubber finger sleeve 64 and opening to the right, rubber finger sleeve 64 is coated on the outside of sleeve pipe 63 by its right section, and the left side section of rubber finger sleeve 64 is positioned at the left of the left end of sleeve pipe 63, becomes the latex head 64-1 that can be strutted by elasticity internally.Connector 62 is 2 card posts, and 2 card posts 62 are symmetrical arranged according to fore-and-aft direction.One end of card post 62 penetrates and is fixed in the union joint 61, and is positioned at the right-hand member of union joint 61; The other end of card post 62 is positioned at the through hole of union joint 61.

See Fig. 3, the left end of ring for fixing 4 is arranged with 2 stopper slot 4-2.

See Figure 14; protective sleeve 6 when mounted; inserted from right to left in the sleeve pipe 63 of protective sleeve 6 together with the mandrel 1 and the ball 3 that struts that is in deployed condition by ejector sleeve 2, and the left side section that struts ball 3 then stretches in the latex head 64-1 of rubber finger sleeve (64), union joint 61 is enclosed within on the ring for fixing 4.2 card posts 62 of protective sleeve 6 are pegged graft and are screwed in the stopper slot 4-2 of pairing ring for fixing 4 separately.

See that Figure 15 expanding type vertebral body shaper is in process of expansion, promoting ejector sleeve 2 slides left with respect to mandrel 1, strutting ball 3 all enters in the latex head 64-1, the connection rib that struts the ball main body then is in rolled state, thereby make that strutting ball main body integral body is bulk, latex head 64-1 is strutted to be bloats shape.

When (application examples 1) underwent surgery when the expanding type vertebral body shaper that adopts embodiment 4, one group operating theater instruments matching used with it also comprised vertebral body hole making drill, abutment sleeve, vertebral body drill bit, bone cement sleeve and bone cement push rod.

This group operating theater instruments at first stretches into the vertebral body hole making drill in the abutment sleeve in use, uses the vertebral body hole making drill that stretches out in the abutment sleeve that vertebral body is carried out perforate, and the hole is advanced in the vertebral body less than 5 millimeters.The vertebral body hole making drill is extracted, and abutment sleeve stays in the body as conduit.Subsequently, the vertebral body drill bit is stretched in the abutment sleeve, do guiding, the vertebral body bit drills to certain depth, is pulled out the vertebral body drill bit by abutment sleeve.Then, the expanding type vertebral body shaper that is with protective sleeve 6 is stretched in the abutment sleeve, do guiding, stretch into the depth location that the vertebral body drill bit is bored, expand and make the vertebral body molding by abutment sleeve.After expansion is finished, make expanding type vertebral body shaper be withdrawn into state when not strutting, extract the expanding type vertebral body shaper that is with protective sleeve 6 along abutment sleeve out.Then, the bone cement sleeve is stretched in the abutment sleeve, to the degree of depth that requires, the bone cement at bone cement sleeve injection ormal weight inserts the bone cement push rod in the bone cement sleeve, bone cement is pushed in the vertebral body of molding.At last the bone cement push rod is pulled out together with the bone cement sleeve.

The remainder of the expanding type vertebral body shaper of (embodiment 5) present embodiment is identical with embodiment 4, and difference is: the material of the material of the rubber finger sleeve 64 of protective sleeve 6 for being absorbed by the body.

When (application examples 2) undergos surgery when the expanding type vertebral body shaper that adopts embodiment 5; the remainder that undergos surgery is identical with application examples 1; difference is: after expansion is finished; make expanding type vertebral body shaper be withdrawn into state when not strutting; protective sleeve 6 rotated counterclockwise with respect to the expanding type vertebral body shaper main body and with the expanding type vertebral body shaper body portion from; extract expanding type vertebral body shaper out along abutment sleeve again, stay protective sleeve 6.Then, the bone cement sleeve is stretched in the protective sleeve, to the degree of depth that requires, the bone cement at bone cement sleeve injection ormal weight inserts the bone cement push rod in the bone cement sleeve, bone cement is pushed among the latex head 64-1 of protective sleeve 6.Then the bone cement push rod is pulled out together with the bone cement sleeve; the reuse instrument separates with the sleeve pipe 63 of protective sleeve 6 the latex head 64-1 of protective sleeve 6 by the mode of cutting off; sleeve pipe 63 with protective sleeve 6 takes out at last; the latex head 64-1 of protective sleeve 6 then stays in the human body together in company with bone cement, and the latex head 64-1 of operation back protective sleeve 6 is absorbed by the body gradually.

Claims

1. an expanding type vertebral body shaper is characterized in that: comprise mandrel (1), ejector sleeve (2) and strut ball (3); Ejector sleeve (2) is a hollow pipe, is enclosed within on the mandrel (1); Strutting ball (3) is the integral piece of being made by macromolecule medical plastic admixture developing agent; Strutting ball (3) comprises and struts the ball main body, is positioned at the clamping head of left end and is positioned at the connection-peg of right-hand member;

Strut ball (3) and be enclosed within the left part of mandrel (1), and strut ball (3) and be fixed on the left end head of mandrel (1), strut ball (3) and fixedly connected with the removable grafting of left end head of ejector sleeve (2) by its connection-peg by its clamping cutting ferrule; Strut the ball main body and be made up of 6 to 16 joint covers and the connection rib between the adjacent segments cover, the connection rib between each adjacent segments cover has 2 to 4; The joint cover that struts the leftmost side of ball main body links to each other with the clamping head, and the joint cover that struts the rightmost side of ball main body links to each other with connection-peg; When ejector sleeve (2) was positioned at the right side of mandrel (1), the connection rib that struts the ball main body was in deployed condition; When ejector sleeve (2) was positioned at the left side of mandrel (1), the connection rib that struts the ball main body was in rolled state, thereby made that strutting ball main body integral body is bulk.

2. an expanding type vertebral body shaper is characterized in that: comprise mandrel (1), ejector sleeve (2), strut ball (3) and protective sleeve (6); Ejector sleeve (2) is a hollow pipe, is enclosed within on the mandrel (1);

Protective sleeve (6) comprises sleeve pipe (63) and rubber finger sleeve (64); Sleeve pipe (63) is a hollow circular tube, slightly is coarser than ejector sleeve (2); Sealing of the left end of rubber finger sleeve (64) and opening to the right, rubber finger sleeve (64) is coated on telescopic outside by its right section, and the left side section of rubber finger sleeve (64) is positioned at the left of the left end of sleeve pipe (63), becomes the latex head (64-1) that can be strutted by elasticity internally; Strutting ball (3) is the integral piece of being made by macromolecule medical plastic admixture developing agent; Strutting ball (3) comprises and struts the ball main body, is positioned at the clamping head of left end and is positioned at the connection-peg of right-hand member; Strut ball (3) and be enclosed within the left part of mandrel (1), and strut ball (3) and be fixed on the left end head of mandrel (1), strut ball (3) and fixedly connected with the removable grafting of left end head of ejector sleeve (2) by its connection-peg by its clamping cutting ferrule; Strut the ball main body and be made up of 6 to 16 joint covers and the connection rib between the adjacent segments cover, the connection rib between each adjacent segments cover has 2 to 4; The joint cover that struts the leftmost side of ball main body links to each other with the clamping head, and the joint cover that struts the rightmost side of ball main body links to each other with connection-peg;

During use, insert from right to left in the sleeve pipe (63) of protective sleeve (6) together with the mandrel (1) and the ball (3) that struts that is in deployed condition, and the left side section that struts ball (3) then stretches in the latex head (64-1) of rubber finger sleeve (64) by ejector sleeve (2); At this moment, ejector sleeve (2) is positioned at the right side of mandrel (1); When promoting ejector sleeve (2) with respect to mandrel (1) when sliding left, strutting ball (3) all enters in the latex head (64-1), the connection rib that struts the ball main body then is in rolled state, thereby makes that strutting ball main body integral body is bulk, and latex head (64-1) is strutted to be bloats shape.

3. according to the described expanding type vertebral body shaper of claim 2, it is characterized in that: the material of the material of the rubber finger sleeve (64) of protective sleeve (6) for being absorbed by the body.

4. an expanding type vertebral body shaper is characterized in that: comprise mandrel (1), ejector sleeve (2), strut ball (3), Control Component (5) and housing; The global shape of housing is a rifle shape, its inner cavity that forms, and the left side of the barral of a gun of housing and the junction of pikestaff is provided with handle hole;

Mandrel (1) comprises mandrel main body (11); Ejector sleeve (2) comprises ejector sleeve main body (21), and ejector sleeve main body (21) is a hollow pipe, is enclosed within on the mandrel main body (11), thereby makes ejector sleeve (2) to horizontally slip with respect to mandrel (1); The right-hand member head of the right-hand member of mandrel (1) and the barral of a gun of housing is fixedly linked, and the left end of ejector sleeve (2) and mandrel (1) passes the left end head of the barral of a gun of housing, and stretches out left;

Strutting ball (3) is the integral piece of being made by macromolecule medical plastic admixture developing agent; Strutting ball (3) comprises and struts the ball main body, is positioned at the clamping head of left end and is positioned at the connection-peg of right-hand member; Strut ball (3) and be enclosed within the left part of mandrel main body (11), and strut ball (3) and be fixed on the left end head of mandrel main body (11), strut ball (3) and fixedly connected with the removable grafting of left end head of ejector sleeve main body (21) by its connection-peg by its clamping cutting ferrule; Strut the ball main body and be made up of 6 to 16 joint covers and the connection rib between the adjacent segments cover, the connection rib between each adjacent segments cover has 2 to 4; The joint cover that struts the leftmost side of ball main body links to each other with the clamping head, and the joint cover that struts the rightmost side of ball main body links to each other with connection-peg;

When ejector sleeve (2) was positioned at the right side of mandrel (1), the connection rib that struts the ball main body was in deployed condition; When ejector sleeve (2) was positioned at the left side of mandrel (1), the connection rib that struts the ball main body was in rolled state, thereby made that strutting ball main body integral body is bulk;

Control Component (5) comprises pushing plate (51), the panel that resets (52), connecting rod (53), handle (54), the first compression spring (55), the second compression spring (56), the 3rd compression spring (57) and gauge tap (58);

Pushing plate (51) and the panel that resets (52) are enclosed within on the ejector sleeve (2) by the through hole that set aperture, top separately is slightly larger than ejector sleeve (2) external diameter, with ejector sleeve (3) movingly, and pushing plate (51) is positioned at the left side of the panel that resets (52); The left end of the first compression spring (55) directly or indirectly and the chamber wall Elastic Contact backwards of the inner chamber of the barral of a gun of housing, the right-hand member of the first compression spring (55) and the left surface Elastic Contact of pushing plate (51), the right flank of pushing plate (51) contacts with the right baffle-plate of housing, thereby makes pushing plate (51) be positioned in the inner chamber of barral of a gun of housing by elasticity on left and right directions;

About the second compression spring (56) and the 3rd compression spring (57) divide by the right flank Elastic Contact of the right baffle-plate of separately left end and housing, the second compression spring (56) and the 3rd compression spring (57) divide up and down by separately the right-hand member and the left surface Elastic Contact of the panel (52) that resets, reset panel (52) right side top contacts with the right baffle plate of housing, reset panel (52) right side below contacts with the control piece (58-1) of gauge tap (58), thereby the feasible panel (52) that resets is positioned in the inner chamber of barral of a gun of housing by elasticity on left and right directions;

The handle hole that housing is passed on the top of handle (54) stretches in the housing, and is connected on the housing to the pivot axis that is provided with according to front and back; The bottom of the left end head of connecting rod (53) and pushing plate (51) is rotationally connected, and the upper end of the right-hand member head of connecting rod (53) and handle (54) is rotationally connected;

Gauge tap (58) is connected to the pivot axis that is provided with according to front and back with housing, and the control piece (58-1) of gauge tap (58) is fan-shaped cylinder substantially; During use, perhaps control piece (58-1) is contacted with the chamber wall up of the inner chamber of the barral of a gun of housing by its plane, left side (58-1a), and make gauge tap (58) be in neutral gear position, perhaps control piece (58-1) is contacted by the chamber wall up of its plane, right side (58-1b) with the inner chamber of the barral of a gun of housing, advances gear to put and make gauge tap (58) be in;

Be in when advancing gear to put at gauge tap (58), the panel (52) that resets is provided with according to the mode that top is tilted to the left, its right flank bottom contacts according to the mode that face contacts with the plane, left side (58-1a) of the control piece (58-1) of gauge tap (58), its right upper portion contacts according to the mode that line contacts with the right baffle plate of housing, and the panel that resets (52) tightens ejector sleeve (2) on above-below direction;

At gauge tap (58) when being in neutral gear position, the panel (52) that resets is provided with according to the mode of vertical, its right flank bottom contacts in tangent mode with the circular arc cylinder (58-1c) of the control piece (58-1) of gauge tap (58), its right upper portion contacts according to the mode that face contacts with the right baffle plate of housing, and is in the matched in clearance state between panel that resets (52) and the ejector sleeve (2).

5. according to the described expanding type vertebral body shaper of claim 4, it is characterized in that: also comprise ring for fixing (4); Described housing comprises procapsid (7) and back casing (8), and procapsid (7) and back casing (8) are the integrated through injection molding part, and both structures are symmetrical substantially;

Procapsid (7) comprises fore shell main body, left front baffle plate (73) and right front baffle plate (74); The fore shell main body comprises fore shell barral of a gun portion (71), is connected bottom-right fore shell pikestaff portion of fore shell barral of a gun portion (71) (72) and is opened in fore shell barral of a gun portion (71) and the fore shell handle groove (76) in the left side of the junction of fore shell pikestaff portion (72); The left end head of fore shell barral of a gun portion (71) and right-hand member head all offer 1 semicircular groove;

Left front baffle plate (73) and right front baffle plate (74) are connected in the fore shell barral of a gun portion (71) about dividing; Left front baffle plate (73) links to each other with the upper and lower sides of the inner chamber of fore shell barral of a gun portion (71) and the chamber wall of front side; On the left front baffle plate (73), divide to offer the groove of 2 openings towards the rear up and down, the groove of top is semicircle, and the groove of below is a rectangle; Right front baffle plate (74) links to each other with the chamber wall of the inner chamber upside of fore shell barral of a gun portion (71);

Back casing (8) comprises back cover main body, left back baffle plate (83) and right back baffle plate (84); The back cover main body comprises back cover barral of a gun portion (81), is connected bottom-right back cover pikestaff portion of back cover barral of a gun portion (81) (82) and is opened in back cover barral of a gun portion (81) and the back cover handle groove (86) in the left side of the junction of back cover pikestaff portion (82); The left end head of back cover barral of a gun portion (81) and right-hand member head all offer 1 semicircular groove; Each position of back cover main body is corresponding with the present position and the shape of each corresponding site of fore shell main body;

Left back baffle plate (83), right back baffle plate (84) are connected in the back cover barral of a gun portion (81) about dividing, and the position of above-below direction of living in and left and right directions is corresponding with the position that the left front baffle plate (73) and the right front baffle plate (74) of procapsid (7) are positioned in the fore shell barral of a gun portion (71); Left back baffle plate (83) links to each other with the upper and lower sides of the inner chamber of back cover barral of a gun portion (81) and the chamber wall of rear side; On the left back baffle plate (83), divide to offer the groove of 2 openings towards the place ahead up and down, the groove of top is semicircle, and the groove of below is a rectangle; Right back baffle plate (84) links to each other with the chamber wall of the inner chamber upside of back cover barral of a gun portion (81);

The bottom of pushing plate (51) and the panel that resets (52) is equipped with opening direction groove down; The left end of connecting rod (53) passes the groove of the panel that resets (52) bottom, and stretches in the groove of pushing plate (51) bottom, is rotationally connected with the bottom of pushing plate (51); The first compression spring (55) and the second compression spring (56) all are enclosed within on the ejector sleeve (2); The first compression spring (55), pushing plate (51), the second compression spring (56) and the panel that resets (52) array from left to right; The 3rd compression spring (57) is enclosed within on the connecting rod (53), and is positioned between pushing plate (51) and the panel that resets (52);

The central authorities of ring for fixing (4) have circular hole, offer annular groove (4-1) on the ring for fixing (4); Ring for fixing (4) by its central circle hole sleeve on ejector sleeve (2), and be positioned at first the compression spring (55) the left side; Ring for fixing (4) is clipped in the frid place of semi-circular recesses of the left end head of back cover barral of a gun portion (81) by the left and right sides cell wall of its cannelure (4-1);

The rear portion of first segment in the stage casing of ejector sleeve (2) embeds in the semi-circular recesses of left back baffle plate (83), in the rectangular recess of the left back baffle plate of a bit of embedding (83) in the left side of connecting rod (53);

Mandrel (1) also comprises the fixed leg (12) on the right-hand member head that is fastened in mandrel main body (11), and fixed leg (12) is along circumferentially offering toroidal cavity (12-1); The fixed leg (12) of mandrel (1) is clipped in the frid place of semi-circular recesses of the right-hand member head of back cover barral of a gun portion (81) by the left and right sides cell wall of its annular groove (12-1);

Pushing plate (51) is positioned at the left side of left back baffle plate (83), and the right flank of pushing plate (51) contacts with the left surface of left back baffle plate (83); The left end of the first compression spring (55) is fastened in the right-hand member of ring for fixing (4);

The left end of the second compression spring (56) and the right flank of left back baffle plate (83) offset; Under the effect of the second compression spring, the top of the right flank of the panel that resets (52) contacts with the left side of right back baffle plate (84);

The left end of the 3rd compression spring (57) and the right flank Elastic Contact of left back baffle plate (83);

The back cover handle groove (86) of back casing (8) is passed on the top of handle (54), and is rotationally connected by steady pin (54-1) and back casing (8);

Procapsid (7) and back casing (8) are oppositely arranged, and both aim at amalgamation mutually and are fixed together and form housing; Fore shell barral of a gun portion (71) and back cover barral of a gun portion (81) constitute the barral of a gun of housing; Fore shell pikestaff portion (72) and back cover pikestaff portion (82) constitute the pikestaff of housing; Fore shell handle groove (76) and back cover handle groove (86) constitute the handle hole of housing; The left front baffle plate (73) of procapsid (7) and the left back baffle plate (83) of back casing (8) constitute the right baffle-plate of housing; The right front baffle plate (74) of procapsid (7) and the right back baffle plate (84) of back casing (8) constitute the right baffle plate of housing; Ring for fixing (4) be clipped in by the left and right sides cell wall of its cannelure (4-1) the left end semi-circular recesses of fore shell barral of a gun portion (71) and back cover barral of a gun portion (81) the left end semi-circular recesses the orifice plate of circular port of the housing left end that forms jointly, first segment in the stage casing of ejector sleeve (2) then is arranged in the circular hole of the formed front apron of semi-circular recesses of the semi-circular recesses of left front baffle plate (73) and left back baffle plate (83), the a bit of rectangular recess of left front baffle plate (73) and the formed rectangular opening of rectangular recess of left back baffle plate (83) of being arranged in the left side of connecting rod (53), the fixed leg (12) of mandrel (1) be clipped in by the left and right sides cell wall of its annular groove (12-1) the right-hand member semi-circular recesses of fore shell barral of a gun portion (71) and back cover barral of a gun portion (81) the right-hand member semi-circular recesses the orifice plate of circular port of the housing right-hand member that forms jointly;

The left end that the second compression spring (56) and the 3rd compresses spring (57) respectively with the right flank Elastic Contact of the right baffle-plate of housing; The front end of steady pin (54-1) stretches in the opening key seat backward of procapsid (7), and handle (54) is rotationally connected by steady pin (54-1) and procapsid (7);

Each bolt (100) passes procapsid (7) and back casing (8) respectively successively, and nut (101) is enclosed within the afterbody of corresponding bolt (100) separately, and both spin together, thereby makes procapsid (7) and back casing (8) be fixed together.

6. according to the described expanding type vertebral body shaper of claim 5, it is characterized in that: the fore shell main body of described procapsid (7) also comprises the rectangular preceding hole (77) that is opened in the fore shell barral of a gun portion (71) and is located at the fore shell scale (78) that top, rectangular preceding hole (77) was gone up and be positioned in fore shell barral of a gun portion (71); The back cover main body of back casing (8) also comprises the rectangular metapore (87) that is opened in the back cover barral of a gun portion (81) and is located at the back cover scale (88) that rectangular metapore (87) top was gone up and be positioned in back cover barral of a gun portion (81);

Ejector sleeve (2) also comprises 2 projections (22), 2 projections (22) are symmetrical arranged, be divided into preceding projection (22-1) and back projection (22-2), preceding projection (22-1) is fixedly connected on the ejector sleeve main body (21) from the place ahead, back projection (22-2) is fixedly connected on the ejector sleeve main body (21) from the rear, and both all are positioned at the right part of ejector sleeve main body (21);

Control Component (5) also comprises 2 handles (59) that reset; Reset before 2 handles (59) that reset are divided into handle (59-1) and after the handle (59-2) that resets; The rectangular metapore (87) that the back projection (22-2) of ejector sleeve (2) passes back casing (8) stretches out backward, after the cross section that handle (59-2) tight fit is enclosed within ejector sleeve (2) that resets be on the orthogonal back projection (22-2); Procapsid (7) is aimed at back casing (8) after amalgamation is fixed together, the preceding projection (22-1) of ejector sleeve (2) passes the rectangular preceding hole (77) of procapsid (7) and stretches out forward, and the cross section that preceding handle (59-1) tight fit that resets is enclosed within ejector sleeve (2) is on the orthogonal preceding projection (22-1).

7. according to the described expanding type vertebral body shaper of claim 6, it is characterized in that: described procapsid (7) also comprises 2 front limit blocks (75); 2 front limit blocks (75) all link to each other with the chamber wall of the front side of fore shell barral of a gun portion (71), and lay respectively at the both sides up and down in rectangular preceding hole (77); The position towards the back downside at the left end position of the 1 front limit block (75) above being positioned at is the circular arc cylinder, the position towards the back upside at the left end position of the 1 front limit block (75) below being positioned at also is the circular arc cylinder, and these 2 circular arc cylinders belong to same semi-cylindrical;

Positive stop (85) after back casing (8) also comprises 2; Positive stop after 2 (85) all links to each other with the chamber wall of the rear side of back cover barral of a gun portion (81), and lays respectively at the both sides up and down of rectangular metapore (87); The position towards preceding downside at the left end position of positive stop (85) is the circular arc cylinder after 1 above being positioned at, the position towards front upper side at the left end position of positive stop (85) also is the circular arc cylinder after 1 below being positioned at, and these 2 circular arc cylinders belong to same semi-cylindrical; The stage casing of ejector sleeve (2) be arranged in the space that the face of cylinder centered under the arc cylinder that the second right-hand segment of first segment is positioned at positive stop (85) behind 2 front limit blocks (75) and 2.

8. according to the described expanding type vertebral body shaper of claim 5, it is characterized in that: described gauge tap (58) also comprises driving lever (58-2) and switch rotating shaft (58-3), the control piece (58-1) of gauge tap (58) is the integrated through injection molding part, form by consistent fanning strip that is oppositely arranged of two block sizes and circumferential body portion, two fanning strips constitute control piece (58-1) at the drift angle place by the circular column body is continuous, and the cavity geometry of circular column body is arc; Connecting rod (53) is positioned at the centre of two fanning strips of control piece (58-1); The cross section of the middle leading portion of switch rotating shaft (58-3) is arc for what match with the cavity geometry of the circular column body of control piece (58-1), and the cross section of back segment be a circle; The rear end of switch rotating shaft (58-3) and back casing (8) are rotationally connected, and are positioned at the lower right of right back baffle plate (84); The circumferential body portion of control piece (58-1) is passed in the stage casing of switch rotating shaft (58-3), and is upwards spacing mutually in week with control piece (58-1);

Procapsid (7) is aimed at back casing (8) after amalgamation is fixed together, and the front end of switch rotating shaft (58-3) passes procapsid (7), stretch out forward, and the front end of switch rotating shaft (58-3) and procapsid (7) is rotationally connected; Driving lever (58-2) is enclosed within on the front end of switch rotating shaft (58-3) by its opening arc blind hole tight fit backwards, thereby both are upwards spacing mutually in week, make driving lever (58-2) and control piece (58-1) together to rotate with respect to housing.

9. according to the described expanding type vertebral body shaper of one of claim 5 to 8, it is characterized in that: also comprise protective sleeve (6); Protective sleeve (6) comprises union joint (61), connector (62), sleeve pipe (63) and rubber finger sleeve (64); Union joint (61) is a moulding, about the central authorities of union joint (61) are provided with to through hole; Sleeve pipe (63) is a horizontally disposed hollow circular tube, slightly is coarser than ejector sleeve (2); Sleeve pipe (63) is the metal insert of union joint (61), and the right-hand member of sleeve pipe (63) embeds in the union joint (61); Sealing of the left end of rubber finger sleeve (64) and opening to the right, rubber finger sleeve (64) is coated on the outside of sleeve pipe (63) by its right section, and the left side section of rubber finger sleeve (64) is positioned at the left of the left end of sleeve pipe (63), becomes the latex head (64-1) that can be strutted by elasticity internally;

During use, insert from right to left in the sleeve pipe (63) of protective sleeve (6) together with the mandrel (1) and the ball (3) that struts that is in deployed condition, and the left side section that struts ball (3) then stretches in the latex head (64-1) of rubber finger sleeve (64) by ejector sleeve (2); Protective sleeve (6) is enclosed within on the ring for fixing (4) by its union joint (61), and is fixedly connected on the ring for fixing (4) by its connector (62); When promoting ejector sleeve (2) with respect to mandrel (1) when sliding left, strutting ball (3) all enters in the latex head (64-1), the connection rib that struts the ball main body then is in rolled state, thereby makes that strutting ball main body integral body is bulk, and latex head (64-1) is strutted to be bloats shape.

10. according to the described expanding type vertebral body shaper of claim 9, it is characterized in that: the material of the material of the rubber finger sleeve (64) of described protective sleeve (6) for being absorbed by the body.