CN107753070A - A kind of thorax cavity retractor for thoracic surgery - Google Patents

Abstract

The invention discloses a kind of thorax cavity retractor for thoracic surgery, surely the one end for strutting arm vertical with travelling arm is fixedly connected, one end of mobile support open arms is slidably connected with travelling arm, telescopic hydraulic telescopic arm is provided between rigid staybolt open arms and mobile support open arms, one end of rigid staybolt open arms is connected by hydraulic pressure conveying arm with hydraulic means, hydraulic telescopic arm is connected by fluid pressure line with hydraulic means, hydraulically extensible capsule is fixedly connected with the working face of plate page, hydraulically extensible capsule is connected with hydraulic means.By the thoracic cavity dilator that traditional complete manual thoracic cavity dilator is improved to automatic hydraulic control, it is high mainly to solve traditional thoracic cavity dilator requirement, it is time-consuming longer, strut the problem of process is whard to control, meanwhile by hydraulically extensible capsule, the surface of hydraulically extensible capsule is set to be bonded completely with exterior object, and then the purpose being in close contact, thus avoid the trouble of hand regulation plate page angle.

Description

A kind of thorax cavity retractor for thoracic surgery

Technical field

The present invention relates to thoracic surgery equipment technology field, more particularly to a kind of thoracic cavity for thoracic surgery retracts Device.

Background technology

In thoracic surgery, often need to be strutted the opening between rib with thorax cavity retractor, performed the operation with facilitating, At present, the structure of traditional thoracic cavity dilator includes the structures such as fixed arm, transfer arm, plate page, swinging handle, rack, passes through control Transfer arm processed sliding to control the opening Chengdu of thoracic cavity dilator on rack, thus reaches the purpose for strutting rib.Due to Fixed arm and transfer arm are parallel to each other, and in order to form V-type opening, plate page is preferably bonded rib, prevent plate page Front and rear edges damage rib, typically in plate page and the regulating bolt that arm junction is provided with adjustable-angle is strutted, by turning Dynamic regulating bolt comes the angle of inclination of adjustable plate page, and then realizes above-mentioned function.But in actual use, traditional thoracic cavity There is inconvenience in dilator, because whole process relies on manual operation, thoracic cavity dilator struts size and the angle person of needing to use Rule of thumb judge, this just requires very high to the operation skill of user, even if meeting to require, only judges to strut by experience Size and angle, it is clear that be the possibility that can have experience erroneous judgement, secondary injury easily is caused to patient, influences entirely to perform the operation Journey, meanwhile, during entirely rib is strutted, the time of cost is longer, causes the thoracic surgery time longer, is unfavorable for whole Individual surgical procedure is higher to the physical fitness requirement of operative doctor.

The content of the invention

The goal of the invention of the present invention is：For above-mentioned problem, there is provided a kind of thoracic cavity for thoracic surgery Retractor, by the way that traditional complete manual thoracic cavity dilator to be improved to the thoracic cavity dilator of automatic hydraulic control, mainly It is high to solve traditional thoracic cavity dilator requirement, it is time-consuming longer, the problem of process is whard to control is strutted, meanwhile, by plate page Working face on set hydraulically extensible capsule, then by hydraulically extensible capsule in hydraulic system connect, stretched by hydraulic system to hydraulic pressure Contract intracapsular offer hydraulic pressure, when hydraulically extensible capsule is exterior object contact, by hydraulic buckling make the surface of hydraulically extensible capsule with Exterior object is bonded completely, and then the purpose being in close contact, and thus avoids the trouble of hand regulation plate page angle.

The technical solution adopted by the present invention is as follows：A kind of thorax cavity retractor for thoracic surgery, including fixation strut Arm and mobile support open arms, it is respectively arranged on the plate page of rigid staybolt open arms and mobile support open arms one end, it is characterised in that rigid staybolt open arms One end away from plate page is vertical with travelling arm to be fixedly connected, and the one end of mobile support open arms away from plate page is slidably connected with travelling arm, Telescopic hydraulic telescopic arm is provided between rigid staybolt open arms and mobile support open arms, the one end of rigid staybolt open arms away from plate page passes through Hydraulic pressure conveying arm is connected with hydraulic means, and hydraulic telescopic arm is connected by fluid pressure line with hydraulic means, and hydraulic telescopic arm is used for The distance between rigid staybolt open arms and mobile support open arms are controlled, hydraulically extensible capsule, hydraulic pressure are fixedly connected with the working face of plate page Retractable sack is completely covered by the working face of plate page, and hydraulically extensible capsule is connected by hydraulic connecting mouth with hydraulic means.

Further, in order to preferably implement the hydraulically extensible capsule of the present invention, hydraulically extensible capsule includes the capsule with capsule structure Body, capsule body include middle cavity and with hydraulic connecting mouths, and the end face that the outer wall of capsule body contacts with exterior object is provided with contacting Portion, contact site include the jog with concaveconvex structure, and jog is used to contact with exterior object.

Further, in order to preferably implement the jog of the present invention, jog includes double wedge and groove, and double wedge and groove are wrong Arrangement is opened, when capsule body is unexpanded, is in close contact between adjacent tooth.

Further, in order to which the hydraulic telescopic arm of the present invention is better achieved, hydraulic telescopic arm is set on travelling arm, hydraulic pressure Telescopic arm includes retractable sack, and retractable sack is the ring-segment-like structure of Telescopic, is full of hydraulic oil in retractable sack.

Further, for the ease of thorax cavity retractor position in use regulation, hydraulic pressure conveying arm include it is snakelike Manage, fluid pressure line is disposed with coiled pipe, hydraulic pressure conveying arm is used to protect fluid pressure line.

Further, the sight of user is influenceed in order to prevent the surface reflection of rigid staybolt open arms 1 and mobile support open arms 2, Frosted pad pasting is pasted with the surface of rigid staybolt open arms and mobile support open arms.

In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：A kind of use provided by the invention In the thorax cavity retractor of thoracic surgery, by the way that traditional complete manual thoracic cavity dilator is improved into automatic hydraulic control Thoracic cavity dilator, it is high mainly to solve traditional thoracic cavity dilator requirement, takes longer, struts that process is uppity to ask Topic, meanwhile, by setting hydraulically extensible capsule on the working face of plate page, then hydraulically extensible capsule is connected in hydraulic system, led to Hydraulic system is crossed to the intracapsular offer hydraulic pressure of hydraulically extensible, when hydraulically extensible capsule is exterior object contact, is made by hydraulic buckling The surface of hydraulically extensible capsule is bonded completely with exterior object, and then the purpose being in close contact, and thus avoids hand regulation plate The trouble of page angle.

Brief description of the drawings

Fig. 1 is a kind of thoracic cavity dilator three dimensional structure diagram for thoracic surgery of the present invention；

Fig. 2 is the plate page structure schematic diagram of the present invention；

Fig. 3 is the hydraulic telescopic arm section structure diagram of the present invention；

Fig. 4 is the hydraulic means control structure figure of the present invention；

Fig. 5 is the hydraulically extensible capsule cross-sectional view of the present invention.

Marked in figure：1 is rigid staybolt open arms, and 2 be mobile support open arms, and 3 be plate page, and 4 be travelling arm, and 5 be hydraulic telescopic arm, 6 be hydraulic pressure conveying arm, and 7 be hydraulic means, and 8 be support bar, and 9 be hydraulically extensible capsule, and 10 be handle, and 11 be jog, during 12 are Cavity, 13 be double wedge, and 14 be groove, and 15 be insulating barrier.

Embodiment

Below in conjunction with the accompanying drawings, the present invention is described in detail.

In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.

As shown in Figure 1 to Figure 3, a kind of thorax cavity retractor, including the rigid staybolt open arms 1 and mobile support open arms 2 being arranged side by side, It is respectively arranged on the plate page 3 of rigid staybolt open arms 1 and the one end of mobile support open arms 2, rigid staybolt open arms 1 one end and slip away from plate page 3 Arm 4 is vertically fixedly connected, and the one end of mobile support open arms 2 away from plate page 3 is slidably connected with travelling arm 4, rigid staybolt open arms 1 and movement Strut and telescopic hydraulic telescopic arm 5 is provided between arm 2, the both ends of hydraulic telescopic arm 5 are connected to rigid staybolt open arms 1 and moved Dynamic to strut on arm 2, the one end of rigid staybolt open arms 1 away from plate page 3 is connected by hydraulic pressure conveying arm 6 with hydraulic means 7, hydraulically extensible Arm 5 is connected by fluid pressure line with hydraulic means 7, hydraulic telescopic arm 5 be used to controlling rigid staybolt open arms 1 and mobile support open arms 2 it Between distance.

Hydraulic means 7 controls the flexible of hydraulic telescopic arm 5 by fluid pressure line, fixed when hydraulic telescopic arm 5 stretches The spacing strutted between arm 1 and mobile support open arms 2 is extended, and is achieved in the function of strutting.Now, if in fluid pressure line Design of pressure is located at a threshold value（Threshold value is generally 300-1000N）, when the pressure in fluid pressure line reaches threshold value, stop The pressure pressurizeed simultaneously in stable hydraulic pipeline, then can abandon by Conventional wisdom to control the defects of strutting size, pass through hydraulic pressure To provide power, realize automatically opening up for thoracic cavity dilator, thus solve the problems, such as it is time-consuming longer when thoracic cavity dilator uses, Meanwhile the mode of hydraulic pressure voltage supply smoothly can apply pressure to rib, the skill of pressure is provided by rack compared to traditional Art means, the mode of hydraulic pressure voltage supply can be better protected from rib compression overload, prevent rib damage fracture, user can be preferably Judge the maximum weighted scope for whether having reached rib, the process of strutting is more easy to be controlled, and contributes to operation to be smoothed out.

Further, in order to which the hydraulic telescopic arm 5 of the present invention is better achieved, hydraulic telescopic arm 5 is set on travelling arm 4 As shown in figures 1 and 3, hydraulic telescopic arm 5 includes retractable sack, and retractable sack is the ring-segment-like structure of Telescopic, is filled in retractable sack Full hydraulic oil.

Further, in order to prevent during strutting, mobile support open arms 2 is inclined relative to the generation of rigid staybolt open arms 1 angle Move and influence the execution of distracting action, support bar 8 is provided between rigid staybolt open arms 1 and mobile support open arms 2, support bar 8, which is fixed, to be connected The middle part of rigid staybolt open arms 1 is connected on, mobile support open arms 2 can be on support bar 8 slidably.

Further, angle is bonded for preferably adjustment plate page 3 and rib, prevents 3 pairs of ribs of plate page from causing to damage, The working face of plate page 3 is provided with hydraulically extensible capsule 9, and hydraulically extensible capsule 9 includes the capsule body with capsule structure, as shown in figure 5, capsule Body include middle cavity 12 and with hydraulic connecting mouth（It is not drawn into figure）, the end face that the outer wall of capsule body contacts with exterior object is set There is contact site, contact site includes the jog 11 with concaveconvex structure, and jog 11 is used to contact with exterior object, capsule body master To be made up of flexible silicon rubber, jog 11 is formed as one capsule body certainly with silicon rubber.

Capsule body is connected by hydraulic connecting mouth with hydraulic system, when the jog 11 that hydraulically extensible capsule 9 passes through capsule body With exterior object（Such as rib）During contact, because the contact surface of exterior object has certain angle of inclination, and it is possible to recessed Convex injustice, in order that the surface of jog 11 and exterior object is brought into close contact completely, when capsule body is under conditions of by hydraulic pressure Externally during expansion, the contact surface of the externally object of jog 11 gradually expands fitting area, is brought into close contact, enters completely until reaching And the trouble of the angle of hand regulation plate page 3 is avoided, solve the deficiency present in traditional thorax cavity retractor, meanwhile, compared to The smooth plate page 3 in surface, the concaveconvex structure that the surface of hydraulically extensible capsule 9 has can more be adapted to the feelings of exterior object surface irregularity Condition, it is bonded positive effect and is better than traditional structure of plate page 3.

Further, in order to preferably implement the jog 11 of the present invention, jog 11 includes double wedge 13 and groove 14, such as Shown in Fig. 5, double wedge 13 and groove 14 are staggeredly arranged.Such setting can not only be such that jog 11 is more brought into close contact in outside The surface of object, it can also effectively prevent outside sharp object from puncturing capsule body, for example, when thorax cavity retractor retracts to thoracic cavity When, the incision of rib can have zigzag groove, and can have the broken bone of fragmentary tip shape at groove, these tip shape things Presence can puncture capsule body made of silicon rubber, and then oil accident easily occurs, and double wedge 13 that jog 11 has and recessed The structure of groove 14, can form buffer strip, these tip shape things can not be caused material injury to capsule body, thus overcome outside The problem of sharp object punctures capsule body and causes oil leak.

Further, when capsule body is unexpanded, it is in close contact between adjacent tooth 13, to prevent outside liquid from entering groove Etch is caused to capsule body in 14.Specifically, when capsule body is unexpanded, due to the close contact between double wedge 13 so that outside Liquid cannot be introduced into groove 14, thus avoid and the most thin part of capsule body is caused to corrode, when this volume expansion of capsule, double wedge 13 Between distance progressively widened, groove 14 highlights, and is brought into close contact in order to which the surface of jog 11 and exterior object is formed, Liquid is now had to be mixed into groove 14, when capsule body again shrink by pressure release, the distance between double wedge 13 progressively drawn it is small until Reach close contact, groove 14 is then progressively reduced until shape is into a line, and now, the liquid being mixed into originally in groove 14 can be squeezed Press out, and then effectively prevent liquid and corrode to caused by the most thin part of capsule body, improve the corrosion resistant of hydraulically extensible capsule 9 Erosion ability.

Further, the groove depth of groove 14 is not less than 0.5mm.The groove depth of groove 14 can not be too shallow, too shallow, can not overcome Outside sharp object punctures the problem of capsule body, and the surface formation for being then unfavorable for very much jog 11 and exterior object deeply is brought into close contact, Simultaneously the Liquid Residue scale of construction in groove 14 can be caused excessive, reduce the resistance to corrosion of capsule body.

Further, in order that jog 11 preferably forms close contact with the surface of exterior object, along double wedge 13 Arragement direction, double wedge 13 are arranged in wave linear shape.

The insulating barrier for being used for completely cutting off hydraulic oil is provided with order to prevent hydraulic oil from causing to corrode to capsule body, in middle cavity 12 15, insulating barrier even application is on the inwall of middle cavity 12.

Mode is preferably carried out as one kind, insulating barrier 15 is polytetrafluoroethylene floor, and thickness is 200-600 μm, more preferably For 340 μm.

Further, capsule body is fixedly installed on the plate page 3 of thorax cavity retractor, the hydraulic oil connector and chest of capsule body The hydraulic system connection of chamber retractor.

Further, due to the particularity of hydraulically extensible capsule working environment, the combination property of traditional silicon rubber can not Meet requirement of the hydraulic system to hydraulically extensible capsule, in order that silicon rubber disclosure satisfy that required, the silastic material bag Include the component of following parts by weight：100 parts of organopolysiloxane, crosslinking agent 1-3 parts, silane coupler 0.5-2 parts, reinforced filling 8- 11 parts, graphite powder 5-8 parts, silica 3-6 parts, cotton fiber 5-8 parts, platinum catalyst 0.5-1 parts, the reinforced filling is by titanium white Powder and silicone powder are 3 by weight:1 is mixed to get, and the average grain diameter of reinforced filling is 200-400 mesh.

In above-mentioned, reinforced filling is mainly used to stablize the intensity and elasticity of silicon rubber, and it can effectively improve silicon rubber Tearing toughness.The use of cotton fiber is mainly used in improving the toughness and tear resistance of fluorine silica gel, and cotton fiber is uniformly distributed in silicon In rubber, in the presence of coupling agent and crosslinking agent, cotton fiber is collectively forming with reinforced filling, graphite powder and silica to be had The enhancing system of network structure, when silicon rubber is stretched, the enhancing system of formation can well buffer and absorb stretching Power, promote silicon rubber to be less prone to tensile fractures in deformation process, thus improve the comprehensive mechanical property of hydraulically extensible capsule.

Further, in order to preferably implement the silastic material of the present invention, the preparation method of the silicon rubber include with Lower step：

Step 1, reinforced filling, graphite powder and silica is added in coupling reaction tank, opens agitating device, It is uniformly mixed under 300rad/min mixing speed in 90 DEG C of high temperature, it is while stirring, silane coupler is direct Sprinkling in the mixture, after reacting 10min, the finely dispersed cotton fiber of addition dispersion machine, reduces the temperature of batch mixing to 70 DEG C Hereinafter, it is uniformly mixed under 200rad/min mixing speed, is incubated 5min, just mixed thing is made；

Step 2, first mixed thing, organopolysiloxane, platinum catalyst and crosslinking agent be together kneaded, obtain uniform sizing material；

Step 3, the uniform sizing material obtained to step 2 post-process.

In order to preferably explain the silastic material of the present invention, table 1 lists the specific of embodiment 1-5 and comparative example 1-3 Formula.

The embodiment 1-5 of table 1 and comparative example 1-3 specific formula（In parts by weight）

Main performance is tested, and the silastic material that above-described embodiment is obtained is made hydraulically extensible capsule 9, thickness 1.8mm, passed through Experiment is tested below

1st, the tensile strength and tearing toughness of hydraulically extensible capsule 9 are tested using universal testing machine；

2nd, hydraulically extensible capsule 9 is inflated, untill the volume of hydraulically extensible capsule 9 increases 1 times, then deflated, repeat to grasp Make 100 times, examine face crack situation；

3rd, the aging for a week in artificial accelerated aging case, the decline percentage of its performance is then surveyed；

4th, the test of plastic deformation is measured after 1000 Quick bendings.

As a result it is as shown in table 2：

The embodiment 1-5 of table 2 and comparative example 1-3 Specifeca tion speeification

Note：In face crack one, " % " represents that area existing for crackle accounts for the percentage of total surface area.

In tables 1 and 2, can be obtained by comparative example 1-5, when the content of cotton fiber gradually increases, silicon rubber Tensile strength and tearing toughness gradually increase, the rate of plastic deformation of silicon rubber is gradually reduced, thus, it is possible to illustrate, cotton is fine Dimension can improve the tensile strength and tearing toughness of silicon rubber, reduce the rate of plastic deformation of silicon rubber.Can by comparative example 1-3 To obtain, when containing glass fibre in silicon rubber, the tensile strength and tearing toughness of silicon rubber are with content of glass fiber Increase and increase, but its rate of plastic deformation and ageing resistace have no significant difference, it is possible thereby to illustrate, are added in silicon rubber fine During dimension, its tensile strength and tearing toughness can increase.Can be with by the way that embodiment 1-5 and comparative example 2-3 are carried out into contrast Obtain, when containing cotton fiber in silicon rubber, its tensile strength and tearing toughness are obviously improved, the rate of plastic deformation and anti-aging Property is obviously reduced, and face crack situation is also obviously improved, and compared to glass fibre, the addition of cotton fiber can make silicon rubber Glue main performance is obviously improved, and main cause is probably cotton fiber and reinforced filling, graphite powder and the common shape of silica Into the enhancing system of more stably network structure, and then the main performance of silicon rubber is promoted to be obviously improved, and glass fibers The enhancing system for the network structure that dimension is collectively forming with reinforced filling, graphite powder and silica less stable by contrast, Thus it is caused significantly to lift the main performance of silicon rubber, therefore, the technique effect for the cotton fiber that the present invention uses is bright The aobvious technique effect being better than using glass fibre.

From Tables 1 and 2, the tensile strength of silastic material of the invention reaches 24.1MPa, and tearing toughness reaches 58.6KN/m, there is higher tearing toughness, combination property is good, after multi-drawing expansion, its face crack yield It is relatively low, it can on this condition use for a long time, it is poor to efficiently solve traditional silicon rubber tearing toughness deficiency, combination property Problem, meet requirement of the thorax cavity retractor to hydraulically extensible capsule material.

In one embodiment of the invention, in order to prevent the surface reflection of rigid staybolt open arms 1 and mobile support open arms 2 and shadow Frosted pad pasting is pasted with 2 surfaces of the sight of sound user, rigid staybolt open arms 1 and mobile support open arms（It is not drawn into figure）.

Further, hydraulic pressure conveying arm 5 includes coiled pipe, and fluid pressure line is disposed with coiled pipe, and hydraulic pressure conveying arm 5 is used for Protect fluid pressure line.

Further, in order to which hydraulic control thoracic cavity dilator is better achieved, hydraulic cylinder, angle are provided with hydraulic means 7 Hydraulic system and telescopic hydraulic system are adjusted, as shown in figure 4, in Fig. 4, horizontal line represents fluid pressure line, arrow line represents signal Transmission line.Angular adjustment hydraulic system and telescopic hydraulic system are led to by signaling control unit connection liquid cylinder pressure, hydraulic cylinder respectively Cross signaling control unit and control angular adjustment hydraulic system and telescopic hydraulic system respectively, angular adjustment hydraulic system is stretched by hydraulic pressure Contracting capsule 9, first pressure sensor and the first fluid pressure line composition, first pressure sensor are installed in the first fluid pressure line, are used In detecting the pressure in the first fluid pressure line, one end connection hydraulically extensible capsule 9 of the first fluid pressure line, its other end passes through hydraulic pressure Conveying arm 6 is connected with hydraulic cylinder, and first pressure sensor is connected by wire or signal transmssion line with signaling control unit.It is flexible Hydraulic system is made up of hydraulic telescopic arm 5, second pressure sensor and the second fluid pressure line, and second pressure sensor is installed on In two fluid pressure lines, for detecting the pressure of the second fluid pressure line, one end of the second fluid pressure line connects hydraulic telescopic arm 5, its The other end connects through hydraulic pressure conveying arm 6 with hydraulic cylinder, and second pressure sensor passes through wire or signal transmssion line and signal control Unit connection processed.Signaling control unit includes signal input module, central processing module and signal output module, central processing mould Block and signal output module are installed on hydraulic cylinder, and signal input module is installed on the shell of hydraulic means 7, signal input mould Block is connected with central processing module by wire or signal transmssion line, for conveying external signal, letter to central processing module Number input module its can be keyboard input devices or remote controller input equipment；Central processing module passes through letter Number transmission line is connected with hydraulic cylinder, and signal input module, first pressure sensor and second pressure sensor are and central processing Module connects, and central processing module can be CPU or PLC, for handling the various signals from outside and reacting；Signal Output module includes hydraulic cylinder, and for performing the signal sent from central processing module, signaling control unit is defeated by signal Go out module and control angular adjustment hydraulic system and telescopic hydraulic system respectively.

The application method of the hydraulic means of the thorax cavity retractor of the present invention, comprises the following steps：

Step 1, start hydraulic means 7, signaling control unit is started working, and initial threshold is set by signal input module（Just Beginning threshold value can be set as 1-10N, preferably 3N）, hydraulically extensible capsule threshold value（Hydraulically extensible capsule threshold value can be set as 50- 300N, preferably 100N）With hydraulic telescopic arm threshold value（Hydraulic telescopic arm threshold value can be set as 200-1000N, be preferably 500N）, the initial threshold of input, hydraulically extensible capsule threshold value and hydraulic telescopic arm threshold value be delivered to centre by signal input module Stored in reason module；（Indicate：The reference value provided in above-mentioned bracket is estimated by adult's standard）

After the completion of step 2, step 1, by signal input module input initialization signal 001, hydraulic cylinder receives initial signal 001 It is oily to delivery hydraulic pressure in the fluid pressure line of angular adjustment hydraulic system and telescopic hydraulic system respectively by fluid pressure line afterwards, first Pressure sensor and second pressure sensor detect the pressure value in fluid pressure line in real time, and pressure value is converted into pressure signal It is transferred to central processing module to be handled, when the pressure signal of first pressure sensor and second pressure sensor transmissions reaches During the initial threshold of setting, central processing module, which is sent, maintains pressure signal 002, after hydraulic cylinder receives maintenance pressure signal 002, Stop to angular adjustment hydraulic system and telescopic hydraulic system feed hydraulic oil, and maintain the first fluid pressure line and the second hydraulic tube Pressure in road, now, mobile support open arms 2 can be on travelling arms 4 slidably；

Step 3, thorax cavity retractor is moved to needs traction part, hand holds the handle of thorax cavity retractor, and plate page 3, which is inserted, to be needed Part is retracted, flexible execution signal 003 is then inputted by signal input module, hydraulic cylinder reception is flexible to perform signal 003 Afterwards, feed hydraulic oil and the pressure value in the second fluid pressure line is constantly increased into telescopic hydraulic system, hydraulic telescopic arm promotes Mobile support open arms 2 moves, and realizes the distracting action of thorax cavity retractor；

Step 4, reach hydraulic telescopic arm threshold value when the pressure value in the second fluid pressure line that second pressure sensor detects in real time When, central processing module, which is sent, stops telescope signal 004, after hydraulic cylinder receives stopping telescope signal 004, stops to telescopic hydraulic System feed hydraulic oil, and maintain the pressure in the second fluid pressure line；

After the completion of step 5, step 4, the pressure in the second fluid pressure line that second pressure sensor detects in real time reaches stationary value When, central processing module sends angular adjustment and performs signal 005, after the regulation of hydraulic cylinder receiving angle performs signal 005, to angle Hydraulic system feed hydraulic oil is adjusted, and constantly increases the pressure value in the first fluid pressure line, hydraulically extensible capsule 9 starts outwards swollen It is swollen, and constantly increase the contact area with contacting object, realize hydraulically extensible capsule 9 with contacting the complete fitting of object；

Step 6, reach hydraulically extensible capsule threshold value when the pressure value in the first fluid pressure line that first pressure sensor detects in real time When, central processing module, which is sent, stops Regulate signal 006, after hydraulic cylinder receives stopping Regulate signal 006, stops to angular adjustment Hydraulic system feed hydraulic oil, and the pressure in the first fluid pressure line is maintained, the whole distracting action of thoracic cavity dilator is completed；

Step 7, when needing to remove thoracic cavity dilator, pressure release signal 007 is inputted by signal input module, hydraulic cylinder passes through center After processing module receives pressure release signal 007, angular adjustment hydraulic system and telescopic hydraulic system are entered respectively by fluid pressure line Row pressure release, when the pressure value of first pressure sensor detection reaches hydraulically extensible capsule threshold value again, central processing module is sent Stop pressure release signal 101；When the pressure value of second pressure sensor detection reaches hydraulic telescopic arm threshold value again, central processing Module, which is sent, stops pressure release signal 102, after hydraulic cylinder receives stopping pressure release signal 101 and stops pressure release signal 102 respectively, respectively Stop carrying out pressure release to angular adjustment hydraulic system and telescopic hydraulic system, and maintain the first fluid pressure line and the second fluid pressure line Interior pressure, in case reusing；

Step 8, when not using thoracic cavity dilator, pass through signal input module input termination signal 008, hydraulic cylinder receive eventually Pressure release is carried out to angular adjustment hydraulic system and telescopic hydraulic system respectively by fluid pressure line after stop signal 008 and reclaims hydraulic pressure Oil, when the pressure value that first pressure sensor and second pressure sensor detect is 0, hydraulic cylinder stopping action, hydraulic pressure dress Put 7 and be in state to be shut down, now, power off.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.

Claims (7)

1. a kind of thorax cavity retractor for thoracic surgery, including rigid staybolt open arms and mobile support open arms, are respectively arranged on fixation Strut arm and the plate page of mobile support open arms one end, it is characterised in that the one end of rigid staybolt open arms away from plate page is vertical with travelling arm It is fixedly connected, the one end of mobile support open arms away from plate page is slidably connected with travelling arm, between rigid staybolt open arms and mobile support open arms Provided with telescopic hydraulic telescopic arm, the one end of rigid staybolt open arms away from plate page is connected by hydraulic pressure conveying arm with hydraulic means, Hydraulic telescopic arm is connected by fluid pressure line with hydraulic means, and hydraulic telescopic arm is used to control rigid staybolt open arms and mobile support open arms The distance between, hydraulically extensible capsule is fixedly connected with the working face of plate page, hydraulically extensible capsule is completely covered by the work of plate page Face, hydraulically extensible capsule are connected by hydraulic connecting mouth with hydraulic means.

2. it is used for the thorax cavity retractor of thoracic surgery as claimed in claim 1, it is characterised in that hydraulically extensible capsule includes tool Have a capsule body of capsule structure, capsule body include middle cavity and with hydraulic connecting mouth, what the outer wall of capsule body contacted with exterior object End face is provided with contact site, and contact site includes the jog with concaveconvex structure, and jog is used to contact with exterior object.

3. as claimed in claim 2 be used for thoracic surgery thorax cavity retractor, it is characterised in that jog include double wedge and Groove, double wedge and groove are staggeredly arranged, and when capsule body is unexpanded, are in close contact between adjacent tooth.

4. it is used for the thorax cavity retractor of thoracic surgery as claimed in claim 1, it is characterised in that hydraulic telescopic arm is set in On travelling arm, hydraulic telescopic arm includes retractable sack, and retractable sack is the ring-segment-like structure of Telescopic, is full of hydraulic pressure in retractable sack Oil.

5. it is used for the thorax cavity retractor of thoracic surgery as claimed in claim 1, it is characterised in that hydraulic pressure conveying arm includes snake Shape pipe, fluid pressure line is disposed with coiled pipe, and hydraulic pressure conveying arm is used to protect fluid pressure line.

6. it is used for the thorax cavity retractor of thoracic surgery as claimed in claim 1, it is characterised in that rigid staybolt open arms and movement Strut and frosted pad pasting is pasted with the surface of arm.

7. it is used for the thorax cavity retractor of thoracic surgery as claimed in claim 1, it is characterised in that rigid staybolt open arms and movement Strut and be provided with support bar between arm, support bar is fixedly connected on the middle part of rigid staybolt open arms, and mobile support open arms can be on support bar Slidably.