CN102580228A

CN102580228A - Skin soft tissue dilator

Info

Publication number: CN102580228A
Application number: CN2012100141481A
Authority: CN
Inventors: 张健; 薛文君; 郭鹏飞; 张玉国
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-06
Filing date: 2012-01-06
Publication date: 2012-07-18
Anticipated expiration: 2032-01-06
Also published as: CN102580228B

Abstract

The invention discloses a skin soft tissue dilator, which comprises a support and a movable block. A cavity is arranged inside the support, an outer sleeve is movably installed on the support, an inner cavity is arranged in the outer sleeve, an inner sleeve is installed in the inner cavity, a fixed rod is installed in the inner sleeve, a sucker is installed at the lower end of the fixed rod positioned in the cavity, a first central magnetic block is installed on the sucker, a spring is installed in the inner cavity, an arc horizontal slot is horizontally arranged on the periphery of the inner sleeve, a vertical sliding groove is vertically arranged on the periphery of the inner sleeve, a positioning block is installed in the outer sleeve, a guide groove is vertically arranged on one side of the fixed rod, a guide block is arranged on the support, a second central magnetic block is installed in the movable block, the first central magnetic block and the second central magnetic block are magnetically connected in such a manner that opposite poles of the magnetic blocks are opposite, a positioning column is vertically installed at the bottom of the movable block, the upper end of the positioning column is in threaded connection with the movable block, a limit sheet is arranged at the lower end of the positioning column, a quadrangular column is arranged between the upper end and the lower end of the positioning column, a plurality of spring clamps are mounted on the periphery of the quadrangular column of the positioning column, fixed blocks are mounted on the peripheries of the spring clamps, and an inner cavity is arranged in each fixed block.

Description

Skin tissue expander

Technical field

The present invention relates to a kind of plastic surgery's special equipment, exactly is a kind of skin tissue expander.

Background technology

Existing skin tissue expander all is to utilize expanse skin after the expansion capsule inflation be positioned in the skin or the fluid injection.Concrete operations are, will expand capsule earlier and put into skin, to inflation of expansion capsule or topping up, make skin expansion, thereby obtain extra skin histology again, and still, the expansion capsule is prone to break, and have the back problem that gas or liquid spill damage patient body in it of breaking.

Summary of the invention

The object of the invention has provided a kind of skin tissue expander, and it is connected and composed by operating body and expansion body magnetic.Because the speed of skin expansion growth is slower, therefore, whole process of expansion is a progressive process.Behind the wound healing of putting into expansion body, needed 1.5 to 2 months just can reach the expansion standard at least usually, otherwise can too fastly the local skin color change occur because of expanding, even epidermis and the necrosis of part corium.And in very long process of expansion, the patient can not take operating body with oneself all the time, and therefore, expansion body is provided with Spring Card.When operating body applied polarity to expansion body, the motion block of expansion body can be decided piece relatively and expand outwardly, thereby increased the height of whole expansion body; Along with the rising of motion block, partial spring is positioned in to be decided outside the piece, and is in open mode; Anti-scotch falls after rise to deciding in the piece again, thereby, can make expansion body under the situation of no operating body; Highly remain unchanged, all the time skin is played dilating effect.Once expansion was accomplished after 3 to 5 days, and the height of expansion body of having treated the skin histology growth adaptation utilizes operating body that expansion body is implemented magnetic force dilation procedure again again, the height of expansion body is further increased, with further skin expansion.So, go round and begin again, can make skin histology follow progressive expansion.In sum, described skin tissue expander be owing to need not inject liquid or gas is expanded, and, can reach again than the better technique effect of prior art, use convenient safety, therefore, can solve the problem that prior art exists.

The objective of the invention is to realize through following technical scheme: skin tissue expander, comprise bearing, offer cavity in the bearing; The movable trocar sheath of installing on the bearing, the lower, outer perimeter of trocar sheath is provided with circular convex edge, offers swivelling chute in the bearing; Swivelling chute cooperates with circular convex edge, and trocar sheath bearing rotation relatively is provided with inner chamber in the trocar sheath; Interior intracavity is installed inner sleeve, installs and fixes bar in the inner sleeve, and fixed bar is threaded with inner sleeve; The lower end of fixed bar is positioned at cavity sucker is installed, and the first center magnetic piece is installed at the middle part of sucker; Interior intracavity mounting spring, spring is positioned at the fixed bar periphery, and spring is positioned at the inner sleeve below; The periphery level of inner sleeve is offered the arc level trough; Vertically offer perpendicular chute, the arc level trough communicates with the top of perpendicular chute, is provided with locating piece in the trocar sheath; Locating piece cooperates with the arc level trough; One side of fixed bar is vertically offered gathering sill, and bearing is provided with guide pad, and guide pad cooperates with gathering sill; Also comprise motion block, the second center magnetic piece is installed in the motion block, the second center magnetic piece is connected with the first center relative magnetic of magnetic piece heteropole; The vertical installing and locating post in the bottom of motion block, the reference column upper end is threaded with motion block, and the lower end of reference column is provided with banking stop; Reference column up and down between the two ends position be quadrangular, the quadrangular periphery of reference column is installed several Spring Cards, Spring Card is provided with brace; Brace is positioned at the Spring Card inboard, and the square hole on the brace cooperates with quadrangular, and the thickness of left end and right-hand member is the half the of Spring Card thickness; The periphery of Spring Card is installed and is decided piece, decides to offer in the piece inner chamber; When Spring Card is positioned at intracavity, the overlapping closure of left end and right-hand member, Spring Card is at this moment ringwise; When Spring Card was positioned at outside the inner chamber, left end and right-hand member opened, and this moment, Spring Card was c-shaped, made the diameter of the diameter of Spring Card greater than inner chamber, and anti-scotch falls after rise into interior intracavity; Diameter after the diameter of motion block opens greater than Spring Card.Saidly decide to offer from inside to outside in the piece the first ring-shaped drug chamber and the second ring-shaped drug chamber, the first ring-shaped drug chamber is positioned at the periphery of inner chamber, and the second ring-shaped drug chamber is positioned at the first ring-shaped drug chamber periphery, is separated by toroidal membrane between the second ring-shaped drug chamber and the first ring-shaped drug chamber; Deciding the base plate of piece can open, so that respectively to the second ring-shaped drug chamber and the first ring-shaped drug intracavity injection, the first ring-shaped drug intracavity level is installed sealing bolt; The outer end of sealing bolt is positioned at the second ring-shaped drug intracavity, and the inner of sealing bolt is positioned at intracavity, and the periphery of sealing bolt is installed annular elastic sealing film; Elastic sealing film is positioned at the first ring-shaped drug intracavity; Elastic sealing film with decide piece and be connected, elastic sealing film can provide pretightning force to sealing bolt again with sealing between the first ring-shaped drug chamber and the inner chamber; Decide to offer several liquid outlets on the outer wall of piece, liquid outlet communicates with the second ring-shaped drug chamber; The outer end of sealing bolt is provided with medicine outlet, and the sidewall of sealing bolt is provided with the mouth that is used as medicine, and the mouth that is used as medicine communicates with medicine outlet; The Spring Card of below cooperates with sealing bolt, and when Spring Card cooperated with sealing bolt, the mouth that is used as medicine was positioned at outside the first ring-shaped drug chamber.The first annular magnetic piece is installed on the said sucker, and the first annular magnetic piece is positioned at the periphery of the first center magnetic piece; The second annular magnetic piece is installed on the motion block, and the second annular magnetic piece is positioned at the second center magnetic piece periphery, and the first annular magnetic piece is relative with the second annular magnetic piece heteropole, and magnetic connects, and the polarity of the first annular magnetic piece and the first center magnetic piece is opposite.

Description of drawings

Fig. 1 is the structural representation of skin tissue expander according to the invention; Fig. 2 is that the C of Fig. 1 is to structural representation; Fig. 3 is the D-D sectional structure sketch map of Fig. 1; Fig. 4 is the structural representation of said expansion body, and the motion block of expansion body upwards shifts out certain distance among the figure, and partial spring is positioned in decides piece top; Fig. 5 is the E-E sectional structure sketch map of Fig. 4; Fig. 6 is that the A-A of Fig. 1 analyses and observe the structure for amplifying sketch map; Fig. 7 is the local structure for amplifying sketch map of the I of Fig. 1; Fig. 8 is that the B of Fig. 1 is to the structure for amplifying sketch map.

Numbers in the figure: a sucker? 2 first annular magnet? 3 first center magnetic block? 4 second center magnets? 5 second annular magnetic blocks six movable block? 7 given block? 8 fluid Kong? 9 floor? 10 first annular medicine chamber? 11 scale values? 12 pointer? 13 spring card? 13a left? 13b right? 14 second annular medicine chamber? 15 lever? 16 connection piece? 17 jacket tube? 18 positioning block? 19 vertical slip Slot 20 guide groove? 21 guide block? 22 inner sleeve? 23 circular convex along? 24 spring? 25 Plungers? 26 cavities? 27 curved horizontal slots? 28 support? 29 lumen? 30 positioning rod? 31 film? 32 rotating slot? 33 lumen? 34 Limit piece? 35 elastic sealing membrane 36 medicine mouth? 37 medicine mouth? 38 sealing cap? 39 annular bulkhead.

The specific embodiment

Be further described in conjunction with accompanying drawing

As shown in Figure 1, skin tissue expander comprises bearing 28, offers cavity 26 in the bearing 28, the movable trocar sheath 17 of installing on the bearing 28, and the lower, outer perimeter of trocar sheath 17 is provided with circular convex edge 23, offers swivelling chute 32 in the bearing 28.Swivelling chute 32 cooperates with circular convex edge 23, can prevent that trocar sheath 17 is by deviating from the bearing 28.Trocar sheath 17 bearing 28 rotations relatively; Be provided with inner chamber 29 in the trocar sheath 17; Inner sleeve 22 is installed in the inner chamber 29, is installed and fixed bar 15 in the inner sleeve 22, fixed bar 15 is threaded with inner sleeve 22; The lower end of fixed bar 15 is positioned at cavity 26 sucker 1 is installed, and the first center magnetic piece 3 is installed at the middle part of sucker 1.Mounting spring 24 in the inner chamber 29, spring 24 is positioned at fixed bar 15 peripheries, and spring 24 is positioned at inner sleeve 22 belows.Under normal condition, spring 24 is in the compressed energy-storage state by inner sleeve 22 extruding.The periphery level of inner sleeve 22 is offered arc level trough 27, vertically offers perpendicular chute 19, and arc level trough 27 communicates with the top of perpendicular chute 19, is provided with locating piece 18 in the trocar sheath 17, and locating piece 18 cooperates with arc level trough 27.Under the normal condition, locating piece 18 can stop 17 of inner sleeve 22 and trocar sheaths that axial relative motion takes place in arc level trough 27.Because operating body carries out needing stable support in the process that magnetic force lifts to expansion body, preventing the relative expansion body skew of operating body, the effect of influence expansion, therefore, operating body all need be installed on the fixed support.In process of expansion, the patient has tangible discomfort, need widen distance between sucker 1 and the motion block 6 fast, when eliminating magneticaction between the two, has no time operating body by pulling down on the fixed support.At this moment, rotatable inner sleeve 22 makes the intersection of locating piece 18 dislocation arc level troughs 27 and perpendicular chute 19, and at this moment, locating piece 18 loses barrier effect, and inner sleeve 22 can be under the effect of spring 24, trocar sheath 17 ejaculation that upsprings relatively.Said process, the i.e. process that in perpendicular chute 19, moves relatively of locating piece 18.When locating piece 18 moved to perpendicular chute 19 lower ends, process stopped.One side of fixed bar 15 is vertically offered gathering sill 20, and bearing 28 is provided with guide pad 21, and guide pad 21 cooperates with gathering sill 20.Trocar sheath 17 can rotate with inner sleeve 22 synchronously under the normal condition; Trocar sheath 17 connects and composes turning set with inner sleeve 22; Turning set, fixed bar 15, gathering sill 20 and guide pad 21 constitute screw-nut body, and the synchronous rotation of trocar sheath 17 and inner sleeve 22 can be converted into the rectilinear motion up and down of fixed bar 15, thereby; The height of adjustment sucker 1 is so that the size of the magnetic force between adjustment sucker 1 and the motion block 6.Connect and compose operating body by the first center magnetic piece 3, bearing 28, cavity 26, trocar sheath 17, inner sleeve 22, fixed bar 15, spring 24 and sucker 1.

It also comprises motion block 6, the second center magnetic piece, 4, the second center magnetic piece 4 is installed in the motion block 6 is connected with the relative magnetic of the first center magnetic piece, 3 heteropoles.The vertical installing and locating post 25 in the bottom of motion block 6, reference column 25 upper ends are threaded with motion block 6.The lower end of reference column 25 is provided with banking stop 34, reference column 25 up and down between the two ends position be quadrangular.The quadrangular periphery of reference column 25 is installed several Spring Cards 13.Spring Card 13 is provided with brace 16, and brace 16 is positioned at Spring Card 13 inboards, and the square hole on the brace 16 cooperates with quadrangular, and banking stop 34 is locked in Spring Card 13 on the quadrangular with motion block 6.As shown in Figure 5, Spring Card 13 is C shapes, and the thickness of left end 13a and right-hand member 13b is the half the of Spring Card 13 thickness, and the periphery of Spring Card 13 is installed and decided piece 7, decides to offer in the piece 7 inner chamber 33.When Spring Card 13 is positioned at inner chamber 33, as shown in Figure 3, left end 13a and the overlapping closure of right-hand member 13b, Spring Card 13 is at this moment ringwise.Spring Card 13 is positioned at inner chamber 33 when outer, and as shown in Figure 5, left end 13a and right-hand member 13b open, and this moment, Spring Card 13 was c-shaped, made the diameter of the diameter of Spring Card 13 greater than inner chamber 33, and anti-scotch 6 falls after rise in the inner chamber 33.By motion block 6, reference column 25, Spring Card 13, decide piece 7 and the second center magnetic piece 4 connects and composes expansion body.

As shown in Figure 4, the diameter after the diameter of motion block 6 opens greater than Spring Card 13.Can prevent effectively that Spring Card 13 from directly contacting with skin histology, in case thickness only has 13 pairs of skin histologies of Spring Card of one millimeter to cause damage.

During use, earlier expansion body is inserted in the skin to be expanded, treat the otch healing after, utilize operating body skin outside, expansion body to be applied the power of lifting again, the height of expansion body is increased, realization is to the expansion of skin histology.Equispaced operation in three to five days once.Can make motion block 6 increase the height of two or three Spring Cards 13 during beginning at every turn; But, skin can not act with undue haste after having certain tension force; If the height of a motion block 6 increases too much, the local skin color change appearred in regular meeting after second or three day, even epidermis and the necrosis of part corium.When operating afterwards, only can make motion block 6 increase the height of a Spring Card 13 at every turn.After the height of motion block 6 reaches standard, preferably can keep four or five months, at least also need keep two months, expansion back skin, subcutaneous tissue are thin like this, and contracture is little.Accomplishing expansion and hold time should be according to the relax level of local skin, the blood capillary proliferation degree, the position of expansion, the size of dilator, the area that needs to repair what and different, need look the concrete condition decision.

Like Fig. 1 and shown in Figure 4; Saidly decide to offer from inside to outside in the piece 7 the first ring-shaped drug chamber 10 and the second ring-shaped drug chamber 14; The first ring-shaped drug chamber 10 is positioned at the periphery of inner chamber 33; The second ring-shaped drug chamber 14 is positioned at the first ring-shaped drug chamber, 10 peripheries, is separated by toroidal membrane 39 between the second ring-shaped drug chamber 14 and the first ring-shaped drug chamber 10.Deciding the base plate 9 of piece 7 can open, so that injection in the second ring-shaped drug chamber 14 and the first ring-shaped drug chamber 10 respectively.As shown in Figure 7, level is installed sealing bolt 38 in the first ring-shaped drug chamber 10, and the outer end of sealing bolt 38 is positioned at the second ring-shaped drug chamber 14, and the inner of sealing bolt 38 is positioned at inner chamber 33.The periphery of sealing bolt 38 is installed annular elastic sealing film 35; Elastic sealing film 35 is positioned at the first ring-shaped drug chamber 10; Elastic sealing film 35 with decide piece 7 and be connected, elastic sealing film 35 can provide pretightning force to sealing bolt 38 again with sealing between the first ring-shaped drug chamber 10 and the inner chamber 33.Decide to offer several liquid outlets 8 on the outer wall of piece 7, liquid outlet 8 communicates with the second ring-shaped drug chamber 14.The periphery of deciding piece 7 is provided with thin film 31.The outer end of sealing bolt 38 is provided with medicine outlet 36, and the sidewall of sealing bolt 38 is provided with and is used as medicine mouthfuls 37, is used as medicine mouthfuls 37 to communicate with medicine outlet 36.The Spring Card 13 of below cooperates with sealing bolt 38, and when Spring Card 13 cooperated with sealing bolt 38, the mouth 37 that is used as medicine was positioned at outside the first ring-shaped drug chamber 10.For reducing the misery that skin expansion brings to the patient, can in the second ring-shaped drug chamber 14, inject medicated powder, inject solvent in the first ring-shaped drug chamber 10.As shown in Figure 7, when Spring Card 13 cooperated with sealing bolt 38, the second ring-shaped drug chamber 14 and the first ring-shaped drug chamber 10 were obstructed, and the solvent in the first ring-shaped drug chamber 10 separates with the second ring-shaped drug chamber, 14 interior medicated powder, can prolong the effect duration of medicated powder.Usually thin film 31 is with all liquid outlet 8 sealings.After inserting expansion body in the patient skin, thin film 31 can be by the absorption of skin histology, thereby, liquid outlet 8 is opened.When the medicated powder in the second ring-shaped drug chamber 14 not with the first ring-shaped drug chamber 10 in solvent the time, the medicated powder in the second ring-shaped drug chamber 14 can't be flowed out by liquid outlet 8 effectively.After motion block 6 is decided piece 7 risings relatively; The Spring Card 13 of below separates with sealing bolt 38; Elastic sealing film 35 drives sealing bolts 38 and moves right, and making is used as medicine mouthfuls 37 communicates with the first ring-shaped drug chamber 10, at this moment; Solvent in the first ring-shaped drug chamber 10 can inject in the second ring-shaped drug chamber 14, is made into medicament with the second ring-shaped drug chamber, 14 interior medicated powder.If this moment, liquid outlet 8 was an open mode, medicament can flow out the pain of the skin expansion of releiving by liquid outlet 8.

Because expansion body is positioned at the position that skin can't accurately be located the first center magnetic piece 3; Therefore; For the first center magnetic piece 3 is accurately cooperated with the second center magnetic piece 4, make the doctor can grasp the size of magnetic force, as shown in Figure 1; The periphery that first annular magnetic piece 2, the first annular magnetic piece 2 are positioned at the first center magnetic piece 3 is installed on the said sucker 1; Second annular magnetic piece 5, the second annular magnetic piece 5 are installed on the motion block 6 are positioned at the second center magnetic piece, 4 peripheries, the first annular magnetic piece 2 is relative with second annular magnetic piece 5 heteropoles, and magnetic connects, and the polarity of the first annular magnetic piece 2 and the first center magnetic piece 3 is opposite.When the first center magnetic piece 3 and the second center magnetic piece 4 not fully at once, the first center magnetic piece 3 can be corresponding with the annular magnetic piece of part second 5, the second center magnetic piece 4 can be corresponding with the annular magnetic piece of part first 2; Thereby produce stronger repulsion; At this moment, the doctor answers the move operation body, until; The first center magnetic piece 3 is with after the second center magnetic piece 4 is corresponding fully; The first center

magnetic piece

3 and 4 adhesives of the second center magnetic piece, the first annular magnetic piece 2 and second annular magnetic piece 5 adhesives, 1 pair of motion block 6 of sucker this moment only provides pulling force upwards.

Like Fig. 3 and shown in Figure 5, respectively offer a through hole on the left end 13a of Spring Card 13 and the right-hand member 13b.For convenient motion block 6 is assembled with deciding piece 7, can all Spring Cards 13 all be shunk in the form of a ring, the through hole of left end 13a and right-hand member 13b communicates, and locating rod 30 penetrates through hole with all Spring Card 13 lockings.After inserting all Spring Cards 13 in the inner chamber 33, can locating rod 30 be extracted out by deciding piece 7 bottoms, again base plate 9 is fastened.

Like Fig. 1 and shown in Figure 4, annular scale 11 can be set at the upper surface of bearing 28, annular scale 11 is positioned at trocar sheath 17 peripheries, and pointer 12 is set on the outer wall of trocar sheath 17.When need are accurately adjusted the magnetic force between motion block 6 and the sucker 1, in rotating jacket pipe 17, can see the angle that pointer 12 streaks clearly, can learn the distance that motion block 6 accurately goes up and down, thereby learn definite magnetic force numerical value.

The present invention not technology contents of detailed description is known technology.

Claims

1. skin tissue expander is characterized in that: comprise bearing (28), offer cavity (26) in the bearing (28); Bearing (28) is gone up the movable trocar sheath (17) of installing, and the lower, outer perimeter of trocar sheath (17) is provided with circular convex edge (23), offers swivelling chute (32) in the bearing (28); Swivelling chute (32) cooperates with circular convex edge (23); Trocar sheath (17) bearing (28) rotation relatively is provided with inner chamber (29) in the trocar sheath (17), inner sleeve (22) is installed in the inner chamber (29); Install and fix bar (15) in the inner sleeve (22); Fixed bar (15) is threaded with inner sleeve (22), and the lower end of fixed bar (15) is positioned at cavity (26) sucker (1) is installed, and the first center magnetic piece (3) is installed at the middle part of sucker (1); The interior mounting spring of inner chamber (29) (24), spring (24) are positioned at fixed bar (15) periphery, and spring (24) is positioned at inner sleeve (22) below; The periphery level of inner sleeve (22) is offered arc level trough (27); Vertically offer perpendicular chute (19), arc level trough (27) communicates with the top of perpendicular chute (19), is provided with locating piece (18) in the trocar sheath (17); Locating piece (18) cooperates with arc level trough (27); One side of fixed bar (15) is vertically offered gathering sill (20), and bearing (28) is provided with guide pad (21), and guide pad (21) cooperates with gathering sill (20); Also comprise motion block (6), the second center magnetic piece (4) is installed in the motion block (6), the second center magnetic piece (4) is connected with the relative magnetic of first center magnetic piece (3) heteropole; The vertical installing and locating post in the bottom of motion block (6) (25), reference column (25) upper end is threaded with motion block (6), and the lower end of reference column (25) is provided with banking stop (34); Reference column (25) up and down between the two ends position be quadrangular; The quadrangular periphery of reference column (25) is installed several Spring Cards (13), and Spring Card (13) is provided with brace (16), and brace (16) is positioned at Spring Card (13) inboard; Square hole on the brace (16) cooperates with quadrangular; The thickness of left end (13a) and right-hand member (13b) is the half the of Spring Card (13) thickness, and the periphery of Spring Card (13) is installed and decided piece (7), decides to offer in the piece (7) inner chamber (33); When Spring Card (13) was positioned at inner chamber (33), left end (13a) and the overlapping closure of right-hand member (13b), Spring Card (13) were at this moment ringwise; Spring Card (13) is positioned at inner chamber (33) when outer, and left end (13a) and right-hand member (13b) open, and Spring Card this moment (13) is c-shaped, makes the diameter of the diameter of Spring Card (13) greater than inner chamber (33), and anti-scotch (6) falls after rise in the inner chamber (33); Diameter after the diameter of motion block (6) opens greater than Spring Card (13).

2. skin tissue expander according to claim 1; It is characterized in that: saidly decide to offer from inside to outside in the piece (7) the first ring-shaped drug chamber (10) and the second ring-shaped drug chamber (14); The first ring-shaped drug chamber (10) is positioned at the periphery of inner chamber (33); The second ring-shaped drug chamber (14) is positioned at first ring-shaped drug chamber (10) periphery, is separated by toroidal membrane (39) between the second ring-shaped drug chamber (14) and the first ring-shaped drug chamber (10); Deciding the base plate (9) of piece (7) can open; So that injection in the second ring-shaped drug chamber (14) and the first ring-shaped drug chamber (10) respectively, the interior level in the first ring-shaped drug chamber (10) is installed sealing bolt (38), and the outer end of sealing bolt (38) is positioned at the second ring-shaped drug chamber (14); The inner of sealing bolt (38) is positioned at inner chamber (33); The periphery of sealing bolt (38) is installed annular elastic sealing film (35), and elastic sealing film (35) is positioned at the first ring-shaped drug chamber (10), elastic sealing film (35) with decide piece (7) and be connected; Elastic sealing film (35) can provide pretightning force to sealing bolt (38) again with sealing between the first ring-shaped drug chamber (10) and the inner chamber (33); Decide to offer several liquid outlets (8) on the outer wall of piece (7), liquid outlet (8) communicates with the second ring-shaped drug chamber (14); The outer end of sealing bolt (38) is provided with medicine outlet (36), and the sidewall of sealing bolt (38) is provided be used as medicine mouthful (37), and be used as medicine mouthful (37) communicate with medicine outlet (36); The Spring Card (13) of below cooperates with sealing bolt (38), and Spring Card (13) and sealing bolt (38) are when cooperating, and the mouth (37) that is used as medicine is positioned at outside the first ring-shaped drug chamber (10).

3. skin tissue expander according to claim 1 is characterized in that: said sucker (1) is gone up the first annular magnetic piece (2) is installed, and the first annular magnetic piece (2) is positioned at the periphery of the first center magnetic piece (3); Motion block (6) is gone up the second annular magnetic piece (5) is installed; The second annular magnetic piece (5) is positioned at second center magnetic piece (4) periphery; The first annular magnetic piece (2) is relative with second annular magnetic piece (5) heteropole, and magnetic connects, and the first annular magnetic piece (2) is opposite with the polarity of the first center magnetic piece (3).