CN104490427B - Venous membrane breaker - Google Patents

Abstract

The invention relates to a venous membrane breaker comprising a piercing portion, a telescopic tube, a control portion and a wire feed portion. The piercing portion enters a vena through an incision and pierces a membrane by gradually detecting the position of the membrane. The telescopic tube is connected to the tail end of the piercing portion and changes its length by telescoping so as to allow the piercing portion to arrive at the membrane. The wire feed portion is disposed at the rear of the telescopic tube and accurately controls a piercing position of a needle by driving a guide wire connected with the needle of the piercing portion. The control portion process positional information of the components by acquiring the positional information of the piercing portion, the telescopic tube and the wire feed portion. The control portion serving as a control unit is used for controlling, venous injury caused by manual operations is avoided, automatic control is employed, controlling is precise, operating is convenient, and success rate is high.

Description

A kind of vein barrier film breaker

Technical field

The present invention relates to a kind of vein barrier film breaker, more particularly, to a kind of vein barrier film breaker automatically controlling.

Background technology

Bu-plus Cotard refer to liver back segment postcava or hepatic venous system or the pathological changes entirely shut, relatively conventional Type be simple postcava barrier film；Surgical intervention is the Main Means of such disease, and traditional open surgery risk is big, art Infectious-related complication is many.Existing Therapeutic Method be seal wire biopsy needle guide to barrier film or stenosis, by from puncture needle, barrier film is poked, Seal wire passes through barrier film, and guiding balloon expandable makes narrow end eliminate.Disclose a kind of puncture needle in patent document cn2291901y, It includes hollow puncture needle and is enclosed within the needle tubing of hollow puncture needle.

But when using puncture needle, it is all to adopt manually to operate, if direction is not aligned with barrier film central authorities, firmly Excessive, blood vessel can be poked, be strayed into pleura or pericardium causes to jeopardize the hydropneumothorax of patient, due at point of puncture to barrier film away from From indefinite, dynamics and direction are difficult to control to, and lead to rupture of membranes difficulty big, accidental injury rate is high.

For drawbacks described above, creator of the present invention provides a kind of more perfect scheme.

Content of the invention

It is an object of the invention to provide a kind of vein barrier film breaker, to overcome above-mentioned technological deficiency.

For achieving the above object, the present invention provides a kind of vein barrier film breaker, and it includes puncturing part, telescoping tube, control System part and wire-feeding part, the described part that punctures is goed deep in vein by point of penetration, and by gradually detecting the position of barrier film Put, puncture barrier film；Described telescoping tube is connected to the end puncturing part, and it passes through flexible change its length, so that described Punctured part assign to and reach at barrier film；Described wire-feeding part is arranged on the rear side of described extension tubing, and it passes through to drive and punctures The seal wire that partial pricker is connected, is precisely controlled the piercing orientation of pricker；Described control section, it passes through to gather punctured part Point, the positional information of telescoping tube and wire-feeding part, the positional information of each element is processed, and control instruction is passed on respectively To puncturing in part, telescoping tube and wire feeder, control its motion；

Described punctured part divides including sonde body, setting cavity inside described sonde body, in order to accommodate pricker and to every The circuit board of the data processing that film is detected；

The mid portion of sonde body is provided with a pricker containing body, is also cavity inside pricker containing body, is provided with There is a union joint, it is by seal wire together with pricker；Horizontal centre position setting in pricker containing body, union joint and sonde body There is the transfer passage of seal wire and pricker, be provided with opening in the horizontal middle position of three；

Described sonde body front end outer side setting position sensor, its by launch impulse wave and receive impulse wave The position of detection barrier film, described position sensor is connected with a circuit board, and circuit board is connected with control unit by wire；

Upper and lower two air bags are set in the surrounding of described sonde body, are respectively arranged with the end of described air bag and fill QI KOU and lower inflation inlet, upper and lower inflation inlet is connected with an inducing QI chamber, is connected with an airway in the side in inducing QI chamber, to described Air bag supplies, and described airway is passed through and is connected with an air pump inside telescoping tube；Described seal wire passes through inducing QI chamber and stretches Inside pipe, the other end is connected with a wire feed cylinder；

Described telescoping tube includes inner tube, the tube and the outer tube, and the end of inner tube is connected with inducing QI chamber, the end of outer tube and Ejector sleeve oil cylinder connects；First spring is set between inner tube and middle pipe, the first tension pick-up is connected with the first spring；? Between middle pipe and outer tube, second spring is set, the second tension pick-up is connected with second spring；First spring and the second bullet Spring has different coefficient of elasticity, and under tension, the first spring is first stretched, and drives inner tube to stretch out；Reach pole After extreme position, second spring stretches, and in driving, pipe stretches out；

The core of described control unit is a plc controller, and described plc controller determines apart from d according to current The action of each element, d represents that position sensor is apart from the distance of barrier film after every sub-sampling；The outfan of control unit respectively with give Silk cylinder relay, air pump relay and ejector sleeve cylinder relay connect, its control respectively the wire feed cylinder being connected, air pump and The acceleration of ejector sleeve cylinder, controller start-stop, and wire feed cylinder and ejector sleeve cylinder and deceleration；

After described puncturing partly is entered in vein by point of penetration, position sensor detects it is located distance and barrier film Apart from d, if it is apart from d ＞ d₁Then it represents that point of penetration, needs using telescoping tube, seal wire and trachea to be entered apart from barrier film farther out Row protection, wherein, d₁For predeterminable range；And, setpoint distance d₂If, the distance of position sensor place distance and barrier film, d₁＜ D ＜ d₂, then only inner tube is stretched, if d is ＞ d₂, then inner tube stretch to after the limit, middle pipe stretch.

Further, described seal wire stretches out from union joint, is connected internally to and send through sonde body, inducing QI chamber, telescoping tube The piston-rod end of silk cylinder；Described inducing QI chamber includes a telescoping tube connection end, and a sonde body connection end, in inducing QI chamber Between position one centre bore is set, its positioned inside has seal wire and wire；Set respectively in the both sides of the centre bore of sonde body connection end Put gas port and lower gas port, be connected with upper inflation inlet and lower inflation inlet respectively.

Further, the middle part of described inner tube is through hole, and the connection end with inducing QI chamber is provided with one First boss.

Further, described middle pipe, its mid portion setting another circle first convex shoulder internally, during the first convex shoulder is incited somebody to action The inner chamber of pipe is divided into before and after's two parts, is provided with circle first spring, before the two ends of the first spring are resisted against in the inner chamber of front side The inner side two ends of side inner chamber；It is the first flange in the end of front side inner chamber；In the end of rear side inner chamber and described first boss Connect；It is additionally provided with second boss in the end of described rear side inner chamber, second boss is connected with outer tube medial wall.

Further, described outer tube, in the lumen portion be provided with the second convex shoulder, the second convex shoulder is divided into before and after two by it Chamber, is provided with second spring on front side of outer tube bore, and the rear and front end of second spring is resisted against the inner side two on front side of outer tube bore End；It is provided with disk boss in described outer tube foremost, in order to be connected with ejector sleeve oil cylinder.

Further, described wire-feeding part includes wire feed cylinder, upper lower plate, wire feed slideway and the first roller, institute The wire-feeding part stated is arranged on supporting plate, is provided with cylinder supports frame on described supporting plate, in described wire feed cylinder End be provided with lower plate, it is straight that it will be connected to the seal wire folder of wire feed cylinder piston boom end；In described upper lower plate Rear side be provided with wire feed slideway, in order to ensure that seal wire moves ahead along default track；It is respectively provided with the two ends of wire feed slideway There is one group of first roller.

Further, described position sensor takes the mode of stochastic sampling to carry out, to signal waveform, often continuous In k cycle, each cycle selects the sampled point of n predetermined time, at interval of time t₀Sample once, continuous sampling m time；In order to Ensure the referring to property of sampled data and accuracy, the time interval δ t of the n sampled point selecting within each cycle according under State formula to calculate,

$\mathrm{\δt}=\frac{a\·\sin (\mathrm{\ω}+\mathrm{\β})\·t}{\mathrm{\λ}}$

In formula, δ t represents the time interval of sampled point, and a is correction factor, and its size is determined by sampled point quantity, in 10- Between 15, ω represents the angular frequency of signal, is determined by the performance of position sensor, and β is initial phase angle, and t represents the signal period Time, λ represents the peak value of signal waveform.

Further, the collapsing length of described telescoping tube meets following formula

$\mathrm{\δ}{l}_i=f_i{f}_1+f_j{f}_2\·\left[\frac{d-d_2}{d_2}\right]$

The δ l of gained in formula_iIt is the collapsing length of telescoping tube, also for the moving displacement of ejector sleeve oil cylinder；

In formula, f_iRepresent the elastic force in each moment of the first spring, its size passes through the first described tension pick-up Record, f₁Represent the coefficient of elasticity of the first spring；f_jRepresent the elastic force in each moment of second spring, its size is passed through described The second tension pick-up record, f₂Represent the coefficient of elasticity of second spring；For rounding symbol, in d₁＜ d ＜ d₂, its Value is zero, in d ＞ d₂When, its value is 1.

Further, the outer surface in described air bag has been also respectively connected with a balloon positions sensor, and it passes through detection The distance between with venous side wall, send detection information to the detection control module in described circuit board, described control list Unit, according to the distance between air bag and venous side wall, determines in air bag at most.

Further, it is also associated with a positioning seat, the centre of positioning seat between pricker containing body and the front end of sonde body Part is through hole, in order to position described probe；

The rear end of pricker containing body is provided with seal wire sleeve pipe, seal wire is arranged in this sleeve pipe.

Compared with the prior art the beneficial effects of the present invention is:

In the present invention, when puncturing during barrier film, not by the artificial motion controlling pricker, but pass through control unit It is controlled, accordingly, in puncturing part, wire-feeding part and telescoping tube, be respectively arranged with signal collecting device；Avoid manually Operation causes the damage to vein, and by the way of automatically controlling, controls precisely, and easy to operate, success rate is high.

In the present invention arrange telescoping tube, on the one hand increased the support distances of seal wire, it is to avoid seal wire produce bending or Fracture, another fermentation, is that wire, trachea and seal wire provide support passage；And, telescoping tube can multi-stage expansion, will not The excessive space taking operation, it is to avoid crowded in vein, high degree reduce the damage to vein tissue.

Brief description

Fig. 1 is the structural representation of the vein barrier film breaker of the present invention；

Fig. 2 is the structural representation puncturing part of the present invention；

Fig. 3 is the structural representation in the inducing QI chamber of the present invention；

Fig. 4 is the structural representation of the telescoping tube of the present invention；

Fig. 5 is the cross section structure diagram of the telescoping tube of the present invention；

Fig. 6 is the functional block diagram of the control unit of the present invention.

Specific embodiment

Below in conjunction with the accompanying drawings, the detail technical features of the present invention are further described, to be more clearly understood from this Invention.

Refer to shown in Fig. 1, it is the structural representation of the vein barrier film breaker of the present invention, it include puncturing part, Telescoping tube 4, control section and wire-feeding part, the described part that punctures is goed deep in vein by point of penetration, and by gradually examining Survey the position of barrier film, puncture barrier film；Described telescoping tube 4 is connected to the end puncturing part, and it passes through flexible change from height Degree, described punctured part is assigned to reach at barrier film；Described wire-feeding part is arranged on the rear side of described extension tubing 40, and it leads to Overdrive the seal wire 51 being connected with the pricker puncturing part, be precisely controlled the piercing orientation of pricker；Described control section 1, It passes through the positional information that collection punctures part, telescoping tube and wire-feeding part, and the positional information of each element is processed, and will Control instruction is conveyed to respectively and punctures in part, telescoping tube 4 and wire feeder, controls its motion.

In the present invention, when puncturing during barrier film, not by the artificial motion controlling pricker, but pass through control unit It is controlled, accordingly, in puncturing part, wire-feeding part and telescoping tube 4, be respectively arranged with signal collecting device.

Incorporated by reference to shown in Fig. 2, in the present invention, described punctured part divides including sonde body 54, in described sonde body 54 Portion arranges cavity, in order to accommodate pricker 52 and the circuit board 13 to the data processing that barrier film 90 is detected.

The mid portion of sonde body 54 is provided with a pricker containing body 55, is also cavity inside pricker containing body 55, its In be provided with a union joint 53, it is by seal wire 51 together with pricker 52；In the present invention, the length of pricker is between 5-8cm, Effect punctured due to pricker itself, is installed in breaker foremost, rear end connects seal wire, and by the elongation of seal wire Pricker 52 is controlled to contract.In the present embodiment, described seal wire 51 is welded with pricker 52 or the mode such as grafting is connected.

The horizontal centre position of pricker containing body 55, union joint 53 and sonde body 54 is provided with seal wire 51 and pricker 55 Transfer passage, is provided with opening in the horizontal middle position of three, in order to be passed through with seal wire or pricker, in pricker containing body It is also associated with a positioning seat 56, the mid portion of positioning seat 56 is through hole, in order to position between 55 and the front end of sonde body 54 Described probe 52, this location seat structure is arranged in the zone of action of probe 52 it is ensured that probe will not bend or fall downwards Fall, the right position of probe 52 also can be accurately positioned it is ensured that piercing the success rate of film.

The rear end of pricker containing body 55 is provided with seal wire sleeve pipe 64, seal wire 51 is arranged in this sleeve pipe 64, it is to avoid seal wire Bending or blocking.

In order to stretch into that vein is after 80s puncturing part, the position of barrier film 90 is accurately judged, in described sonde body 54 front end outer side setting position sensor 14, it is by launching impulse wave and receiving the position that impulse wave detects barrier film 90 Put, described position sensor 14 is connected with a circuit board 13, and circuit board 13 is connected with control unit 1 by wire.At this In bright, described circuit board 13 is arranged in the cavity of sonde body 54 of the upper end of pricker containing body 55.

In the present invention in order to ensure in the internal cavities of sonde body 54, under the cavity on the top of pricker containing body 55 is more than The cavity in portion, so can either ensure that circuit board 13 has enough receiving spaces, can guarantee that the balance of sonde body 54 again.

In the present invention, described sonde body 54, pricker containing body 55 and union joint are made up of plastics or metal, at this In invention, in order to avoid hard shell is expanded to the injury of vein and to vein, and it is further ensured that the essence of pricker 52 Certainly position, arranges upper and lower two air bags 6 in the surrounding of described sonde body 14, air bag after being inflated, is attached to vein medial wall On, expansion of veins that can be slight, and upper and lower both sides are respectively provided with air bag 6, can by sonde body 14 steadily be arranged on interposition Put, pricker venipuncture.

It is respectively arranged with inflation inlet 61 and lower inflation inlet 62 in the end of described air bag 6, upper and lower inflation inlet is led with one Air cavity 23 connects, and is connected with an airway 22 in the side in inducing QI chamber 23, supplies to described air bag 6.

Incorporated by reference to shown in Fig. 1, in the present invention, airway is connected with air pump 21 inside inducing QI chamber 23 is by telescoping tube, Flow meter 24 is provided with the airway being connected with air pump；Described seal wire 51 stretches out from union joint 53, through sonde body 54, Inducing QI chamber 23, telescoping tube are connected internally to the piston-rod end of a cylinder 32；Described circuit board 13 is connected with a wire 12, from circuit board through the conduit 63 within sonde body 54, through the inside in inducing QI chamber 23 and telescoping tube, connect to described control In unit 1 processed.

Incorporated by reference to shown in Fig. 3, in the present invention, described inducing QI chamber 23 includes a telescoping tube connection end 234, a sonde body Connection end 233, arranges a centre bore in the middle part in inducing QI chamber 23, its positioned inside has seal wire 51 and wire 12；In probe The both sides of the centre bore of body connection end 233 are respectively provided with gas port 231 and lower gas port 232, respectively with upper inflation inlet 61 and Lower inflation inlet 62 connects.It is connected to airway 22 in telescoping tube connection end 234.The present invention setting inducing QI chamber 23 by seal wire, Airway and wire are integrated on identity element, save space, simultaneously, it is to avoid take excessive sky after entering sonde body 54 Between.

Incorporated by reference to shown in Figure 4 and 5, telescoping tube includes inner tube 43, middle pipe 42 and outer tube 41, the end of inner tube 41 in the present invention Portion is connected with inducing QI chamber 23, and the end of outer tube 41 is connected with an ejector sleeve oil cylinder 40.The middle part of described inner tube 43 is insertion Hole 431, and the connection end with inducing QI chamber 23 is provided with a first boss 432.Described middle pipe 42, its centre internally Part arranges another circle the first convex shoulder 423, and the inner chamber of middle pipe 42 is divided into before and after's two parts by the first convex shoulder 423, in front side inner chamber It is provided with circle first spring 422, the two ends of the first spring 422 are resisted against the inner side two ends of front side inner chamber 421 in 421；Front The end of side inner chamber 421 is the first flange 425；It is connected with described first boss 432 in the end of rear side inner chamber 424；Institute The end of the rear side inner chamber 424 stated is additionally provided with second boss 426, and second boss 426 is connected with outer tube medial wall.Described is outer Pipe 41, in the lumen portion be provided with the second convex shoulder 414, the second convex shoulder 414 is divided into before and after two chamber by it, on front side of outer tube bore 413 are provided with second spring 412, and the rear and front end of second spring 412 is resisted against on front side of outer tube bore 413 inner side two ends；? Described outer tube 41 be provided with disk boss 411 foremost, in order to be connected with ejector sleeve oil cylinder.

In the present invention arrange telescoping tube, on the one hand increased the support distances of seal wire, it is to avoid seal wire produce bending or Fracture, another fermentation, is that wire, trachea and seal wire provide support passage；And, telescoping tube can multi-stage expansion, will not The excessive space taking operation, it is to avoid crowded in vein, high degree reduce the damage to vein tissue.

The controlled unit of described telescoping tube 1 controls, and is connected with the first tension force in the end of the first described spring 422 and passes Sensor 429, connects the second tension pick-up 419 in the end of described second spring 412, and two tension pick-ups detect respectively Tension force of spring, and then determine the collapsing length of telescoping tube.The incoming institute of information wireless mode that two tension pick-ups will detect In the control unit 1 stated.In the present invention, the first spring 422 and second spring 412 have different coefficient of elasticity, are being subject to During pulling force, the first spring 422 is first stretched, and drives inner tube 43 to stretch out；After reaching the limit of position, second spring 412 is drawn Stretch, in driving, pipe 42 stretches out.

Incorporated by reference to shown in Fig. 1, in the present embodiment, described wire-feeding part includes wire feed cylinder 32, upper lower plate 33, send Silk slideway 35 and the first roller 34, in the present invention, described wire-feeding part is arranged on supporting plate 3, in described support Cylinder supports frame 31 is provided with plate 3, the end of described wire feed cylinder 32 is provided with lower plate 33, it will be connected to and send The seal wire 51 of silk cylinder 32 piston rod end presss from both sides directly.In the present embodiment, described seal wire 51 is made of metal, and has certain Hardness, under the driving of wire feed cylinder 32, being capable of stepping forward.The rear side of described upper lower plate 33 is provided with wire feed slideway 35, in order to ensure that seal wire 51 moves ahead along default track；It is respectively arranged with one group of first roller at the two ends of wire feed slideway 35 34, seal wire is in the telescoping tube described in wire feed slides into 35 entrance.

The described tailpiece of the piston rod of ejector sleeve cylinder 40 is connected with the end of telescoping tube, in the present invention, barrier film breaker Telescoping tube and puncture part and go deep into vein from point of penetration, and wire-feeding part and control section are arranged on operation bracket.

In the present invention, described control section concentration is controlled to puncturing part, telescoping tube and wire feeder.

Described position sensor 14, it passes through to send the position that impulse wave detects barrier film, and the information transfer by collection To detection control module, in the present invention, detection control module is arranged in circuit board 13.Described detection control module bag Include data acquisition module, described data acquisition module include a coupling protection circuit, a filter circuit, a gain amplifier circuit and One samples storage circuit, above-mentioned each module is sequentially connected with, wherein, and described coupling protection circuit, it is in order to suppress electrical interference, signal After described coupling protection circuit, demand data waveform is obtained by filter circuit, be amplified through described gain amplifier module Afterwards, it is reduced to original waveform；The current signal of collection transmits after treatment and is stored to described samples storage circuit.

In the present invention, described data acquisition module is connected with data processing module, described data processing module according under The algorithm controls data acquisition module sampling stated:

The mode taking stochastic sampling is carried out, and to signal waveform, within the often continuous k cycle, each cycle selects n in advance If the sampled point in moment, at interval of time t₀Sample once, continuous sampling m time；In order to ensure the referring to property of sampled data with Accuracy, (1) calculates the time interval δ t of the n sampled point selecting within each cycle according to the following equation,

$\mathrm{\δt}=\frac{a\·\sin (\mathrm{\ω}+\mathrm{\β})\·t}{\mathrm{\λ}}---\left(1\right)$

In formula, δ t represents the time interval of sampled point, and a is correction factor, and its size is determined by sampled point quantity, in 10- Between 15, ω represents the angular frequency of signal, is determined by the performance of position sensor, and β is initial phase angle, and t represents the signal period Time, λ represents the peak value of signal waveform.

Through above-mentioned formula (1) sampling, when signal amplitude is bigger, sampling is more intensive, and the referring to property of sampled data is stronger； Sampling is sampled so that follow-up signal processing data volume reduces according to pre-conditioned to signal data, mitigates the numerous of data processing Miscellaneous computing.

Described data processing module calculates breaker:

$d=\frac{\underset{i=1}{\overset{n}{\mathrm{\σ}}}{d}_i}{n}---\left(2\right)$

In formula, d represents that position sensor is apart from the distance of barrier film after every sub-sampling；N represents the n selecting within each cycle Individual sampled point；d_iRepresent every time the distance of the position sensor and barrier film obtaining at each sample point.

In wire 12 transmits to control unit 1, the core of described control unit 1 is one to the range information obtaining Plc controller, described plc controller according to the current action determining other each elements apart from d, if apart from d ＜ d₀, then Plc controller controls described wire feed cylinder 32 to execute puncture action, i.e. execution cut-out action, wire feed cylinder 32 deceleration cutoff, Wherein, d₀For default distance, in the present embodiment for 4.5-5mm.

Refer to shown in Fig. 6, in the present invention, detection control module, the first tension pick-up 429 and the second tension force sensing The outfan of device 419 is connected with control unit respectively, the outfan of control unit respectively with wire feed cylinder relay, air pump relay Device and ejector sleeve cylinder relay connect, and it controls the wire feed cylinder being connected, air pump and ejector sleeve cylinder respectively, and controller start and stop are moved Make, and the acceleration of wire feed cylinder and ejector sleeve cylinder and deceleration.

After described puncturing partly is entered in vein by point of penetration, position sensor detects it is located distance and barrier film Apart from d, if it is apart from d ＞ d₁Then it represents that point of penetration, needs using telescoping tube, seal wire and trachea to be entered apart from barrier film farther out Row protection, wherein, d₁For predeterminable range, in the present embodiment, it is 40-45mm.Stretch due to having two-stage in the present invention, in order to Ensure that telescoping tube stretches step by step, setpoint distance d₂If, the distance of position sensor place distance and barrier film, d₁＜ d ＜ d₂, then only Inner tube 43 is stretched, if d is ＞ d₂, then inner tube 43 stretch to after the limit, middle pipe 42 stretch.

In the present invention, the collapsing length of telescoping tube meets following formula (3)

$\mathrm{\δ}{l}_i=f_i{f}_1+f_j{f}_2\·\left[\frac{d-d_2}{d_2}\right]---\left(3\right)$

The δ l of gained in formula_iIt is the collapsing length of telescoping tube, also for the moving displacement of ejector sleeve oil cylinder；

In formula, f_iRepresent the elastic force in each moment of the first spring 422, its size passes through the first described tension force sensing Device 429 records, f₁Represent the coefficient of elasticity of the first spring 422；f_jRepresent the elastic force in each moment of second spring 412, it is big Little recorded by the second described tension pick-up 419, f₂Represent the coefficient of elasticity of second spring 412；For rounding symbol Number, in d₁＜ d ＜ d₂, its value is zero, in d ＞ d₂When, its value is 1.

After the displacement determining ejector sleeve oil cylinder 40, described control unit controls ejector sleeve cylinder to continue according to the change of this displacement Electrical equipment is according to this change in displacement action.Therefore, using telescoping tube and its corresponding detection and control element, disclosure satisfy that displacement Real-time change, is easy to the motion real-time monitoring to telescoping tube and control, prevents it from vein is caused with unnecessary damage.

In the present invention, the stroke of wire feed cylinder 32 is much larger than the stroke of ejector sleeve cylinder 40, is partially into vein puncturing Afterwards, described wire feed cylinder 32 action immediately, it is non-interference with ejector sleeve cylinder 40, and wire feed cylinder 32 at the uniform velocity wire feed, if apart from d ＜ d₀, then wire feed cylinder 32 retarded motion, and after puncturing barrier film, pricker 52 just stop motion, it is to avoid to thoracic cavity and Cardia causes wound.

It has been also respectively connected with a balloon positions sensor 6 in the outer surface of described air bag 6, it passes through detection and venous side The distance between wall, sends detection information, in the present invention, described control to the detection control module in described circuit board 13 After unit 1 processed receives the detection information that detection control module sends, according to the distance between air bag 6 and venous side wall, determine to In air bag 6 at most.

After the completion of air bag initial inflation, reserve a small-gap suture between air bag and venous side wall, prevent air bag overdistension, Vein is caused damage.And, in the present invention, the distance between real-time detection air bag and wall of vein, if the abutting in of tension Together, then the valve venting by being arranged on airway, makes air bag shrink.

In the present invention, after completing stab action, described air pump quits work, and is exitted by airway, and air bag 6 is received Contracting, meanwhile, wire feed cylinder 32 shrinks seal wire and telescoping tube with ejector sleeve cylinder 40, takes out breaker.

Above reference is made with preferred embodiment, the technical characteristic and effect of the present invention is provided a brief description, this Bright be not limited to above-mentioned embodiment, without departing from the spirit and scope of the present invention, those skilled in the art can make various changes And modification.

Claims (9)

1. a kind of vein barrier film breaker is it is characterised in that it includes puncturing part, telescoping tube (4), control section and wire feed Part, the described part that punctures is goed deep in vein by point of penetration, and the relative position by gradually detection barrier film (90), punctures Barrier film (90)；Described telescoping tube (4) is connected to the end puncturing part, and it passes through flexible change its length, so that described Punctured part assign to and reach barrier film (90) place；Described wire-feeding part is arranged on the rear side of described telescoping tube (4), and it passes through to drive The seal wire (51) being connected with the pricker (52) puncturing part, is precisely controlled the piercing orientation of pricker (52)；Described control unit Point, it punctures the positional information of part, telescoping tube (4) and wire-feeding part by collection, at the positional information to each element Reason, and control instruction is conveyed to respectively punctures part, in telescoping tube (4) and wire-feeding part, control it to move；

Described punctured part divides including sonde body (54), and setting cavity inside described sonde body (54), in order to accommodate pricker (52) circuit board (13) and to the data processing that barrier film (90) is detected；

The mid portion of sonde body (54) is provided with a pricker containing body (55), pricker containing body (55) is internal to be also cavity, It is provided with a union joint (53), seal wire (51) is linked together by it with pricker (52)；In pricker containing body (55), connect The horizontal centre position of head (53) and sonde body (54) is provided with the transfer passage of seal wire (51) and pricker (52), in the water of three Flat middle position is provided with opening；

Front end outer side setting position sensor (14) of described sonde body (54), it passes through to launch impulse wave and receive pulse Detecting the relative position of barrier film (90), described position sensor (14) is connected ripple with described circuit board (13), circuit board (13) it is connected with control unit (1) by wire；

Upper and lower two air bags (6) are set in the surrounding of described sonde body (54), in the end of described two air bags (6) up and down It is respectively arranged with inflation inlet (61) and lower inflation inlet (62), upper and lower inflation inlet is connected with an inducing QI chamber (23), in inducing QI chamber (23) side is connected with an airway (22), and to described air bag (6) supply, described airway (22) passes through in telescoping tube Portion is connected with an air pump (21)；Described seal wire passes through inside inducing QI chamber (23) and telescoping tube, seal wire one end and a wire feed gas Cylinder (32) connects；

Described telescoping tube (4) includes inner tube (43), middle pipe (42) and outer tube (41), the end of inner tube (43) and inducing QI chamber (23) Connect, the end of outer tube (41) is connected with an ejector sleeve cylinder (40)；Between inner tube (43) and middle pipe (42), the first spring is set (422), the first tension pick-up (429) is connected with the first spring (422)；Arrange between middle pipe (42) and outer tube (41) Second spring (412), is connected with the second tension pick-up (419) in second spring (412)；First spring (422) and second Spring (412) has different coefficient of elasticity, and under tension, the first spring (422) is first stretched, and drives inner tube (43) Stretch out；After reaching the limit of position, second spring (412) stretches, and in driving, pipe (42) stretches out；

The core of described control unit (1) is a plc controller, and described plc controller determines respectively apart from d according to current The action of element, d represents that position sensor (14) is apart from the distance of barrier film after every sub-sampling；The outfan of control unit (1) divides It is not connected with wire feed cylinder relay, air pump relay and ejector sleeve cylinder relay, control unit (1) controls respectively and to be connected Wire feed cylinder (32), air pump (21) and ejector sleeve cylinder (40), control wire feed cylinder (32), air pump (21) and ejector sleeve cylinder (40) to open Stop action, and the acceleration of wire feed cylinder and ejector sleeve cylinder, deceleration；

Puncture after part entered in vein by point of penetration described, position sensor (14) test position sensor (14) and Barrier film apart from d, if position sensor (14) and barrier film (90) are apart from d ＞ d₁Then it represents that point of penetration is apart from barrier film farther out, need Telescoping tube to be adopted is protected to seal wire (51) and airway (22), wherein, d₁For predeterminable range；And, setpoint distance d₂If, d₁＜ d ＜ d₂, then only inner tube (43) is stretched, if d is ＞ d₂, then inner tube (43) stretch to after the limit, middle pipe (42) stretch.

2. vein barrier film breaker according to claim 1 is it is characterised in that described seal wire (51) is from union joint (53) Stretch out, be connected internally to the piston-rod end of wire feed cylinder (32) through sonde body (54), inducing QI chamber (23), telescoping tube；Described Inducing QI chamber (23) include a telescoping tube connection end (234), a sonde body connection end (233), in the pars intermedia of inducing QI chamber (23) Position setting one centre bore, its positioned inside has described seal wire (51) and wire (12)；Center in sonde body connection end (233) The both sides in hole are respectively provided with gas port (231) and lower gas port (232), respectively with upper inflation inlet (61) and lower inflation inlet (62) Connect.

3. vein barrier film breaker according to claim 2 is it is characterised in that the middle part of described inner tube (43) is Through hole (431), and the connection end with inducing QI chamber (23) is provided with a first boss (432).

4. vein barrier film breaker according to claim 3 is it is characterised in that described middle pipe (42), and it is internally Mid portion setting one circle the first convex shoulder (423), the inner chamber of middle pipe (42) is divided into before and after's two parts by the first convex shoulder (423), It is provided with a circle the first spring (422), the two ends of the first spring (422) are resisted against front side inner chamber (421) in front side inner chamber (421) Inner side two ends；It is the first flange (425) in the end of front side inner chamber (421)；The end of rear side inner chamber (424) with described First boss (432) connects；It is additionally provided with second boss (426), second boss in the end of described rear side inner chamber (424) (426) it is connected with outer tube medial wall.

5. vein barrier film breaker according to claim 4 is it is characterised in that described outer tube (41), portion in the lumen It is provided with the second convex shoulder (414), the inner chamber of outer tube (41) is divided into before and after two chamber, inner chamber on front side of outer tube by the second convex shoulder (414) (413) it is provided with second spring (412), the rear and front end of second spring (412) is resisted against two of inner chamber on front side of outer tube (413) On end；It is provided with disk boss (411) in described outer tube (41) foremost, in order to be connected with ejector sleeve cylinder.

6. vein barrier film breaker according to claim 1 is it is characterised in that described wire-feeding part includes wire feed cylinder (32), upper lower plate (33), wire feed slideway (35) and the first roller (34), described wire-feeding part is arranged on supporting plate (3) On, described supporting plate (3) is provided with cylinder supports frame (31), is provided with the end of described wire feed cylinder (32) Lower plate (33), it is straight that it will be connected to seal wire (51) folder of wire feed cylinder (32) piston rod end；In described upper lower plate (33) rear side is provided with wire feed slideway (35), in order to ensure that seal wire (51) moves ahead along default track；In wire feed slideway (35) two ends are respectively arranged with one group of first roller (34).

7. vein barrier film breaker according to claim 1 is it is characterised in that the collapsing length of described telescoping tube (4) Meet following formula

${\mathrm{\δl}}_i=f_i{f}_1+f_j{f}_2\·\[\frac{d-d_2}{d_2}\]$

The δ l of gained in formula_iIt is the collapsing length of telescoping tube (4), also for the moving displacement of ejector sleeve cylinder；In formula, f_iRepresent the The elastic force in each moment of one spring (422), its size is recorded by described the first tension pick-up (429), f₁Represent The coefficient of elasticity of the first spring (422)；f_jRepresent the elastic force in each moment of second spring (412), its size is passed through described The second tension pick-up (419) record, f₂Represent the coefficient of elasticity of second spring (412)；For rounding symbol, in d₁ ＜ d ＜ d₂When, its value is zero, in d ＞ d₂When, its value is 1.

8. vein barrier film breaker according to claim 1 is it is characterised in that in described two air bags (6) up and down Outer surface has been also respectively connected with a balloon positions sensor, and it passes through the distance between detection and venous side wall, to described electricity Detection control module in road plate (13) sends detection information, described control unit (1) according to air bag (6) and venous side wall it Between distance, determine to the aeration quantity in air bag (6).

9. the vein barrier film breaker according to claim 1-8 any claim is it is characterised in that in pricker containing body (55) it is also associated with a positioning seat (56) and the front end of sonde body (14) between, the mid portion of positioning seat (56) is through hole, In order to position described pricker (52)；The rear end of pricker containing body (55) is provided with seal wire sleeve pipe (64).