CN202069719U - Valve conveying system used for implanting valve through cardiac apex - Google Patents

Abstract

The utility model relates to the field of medical instruments and provides a valve conveying system used for implanting valve through cardiac apex. The system comprises a control unit and a convey unit which are connected with each other, the valve is loaded on the convey unit, the convey unit is used for conveying, releasing and reclaiming the valve, and the control unit is used for controlling the conveying, the releasing and the reclaiming of the valve. The system can implant a self-expanded type asymmetric valve into an afflicted part through cardiac apex by utilizing an intervention method, and overcomes the defect that a former conveying system can not implant asymmetric valve from cardiac apex. The conveying system provided by the utility model has the controllability superior to that of the present implant system implanting through femoral artery, and is also superior to a saccule expanded type valve of which the position can not be adjusted after getting released.

Description

A kind of valve induction system of implanting valve through the apex of the heart

Technical field

This utility model relates to medical instruments field, is specifically related to a kind of valve induction system that is used for valve replacement.

Background technology

Rheumatic heart disease, part congenital heart disease and old people's valvular calcification is the main cause that causes patient's valve to damage, and damage is irreversible, and therefore final valve replacement is the method for the most effective and unique radical cure valvular heart disease.Valve replacement is significant.

For a long time, valve replacement can only be used surgical operation, the extracorporeal circulation row be need set up and breast and pericardiotomy opened, valve is sewn to lesion locations, operation risk is very big and patient caused huge physiology and psychic trauma, and the patient of significant proportion is arranged in addition, and especially the patient more than 70 years old belongs to surgery taboo patient, the unable to walk surgical operation, this ratio accounts for 30% patient.2002, abroad carry out aorta first and get involved the clinical of valve, can not all right open chest surgery, directly valve is discharged into lesion locations by conduit, patient is without any big misery, and postoperative patient is very fast just can leave hospital

Two kinds of valves that had in the market, a kind of is the balloon-expandable valve of Edwards company, and this kind valve can be from femoral artery approach (drive in the wrong direction for method), also can be from apex of the heart approach (direct motion method), belong to the two ends symmetric form, so the retrograde did not influence of direct motion.But because this valve is a balloon-expandable, just can't reclaim, if operation has accident can cause very big loss to the patient in case discharge.

Another kind is the self-expanding valve of corevalve, and this system can only implant by the method for driving in the wrong direction, and can't reclaim.

The self-inflated valve is because its characteristics, often long than balloon-expandable valve, consider anatomical structure, in order to reduce the influence of valve to human body as far as possible, the asymmetry valve often is not a cylindrical shape, it is asymmetry, as the corevalve valve, so the asymmetry valve has directivity, and the position of hook need be placed on a specific end wherein, be used for adjusting the release of asymmetry valve, so the corevalve system can only discharge from femoral artery puncture.

In the prior art generally from femoral artery puncture, as shown in Figure 6, along dotted line, in the direction of arrows, the distance that 1-1.3 rice is probably arranged to the target location, because pipeline is long, the sheath pipe has just had the leeway of swing, the control of asymmetry valve just seemed very airplane crash often cause the inaccurate phenomenon of danger or location.And from apex of the heart approach, distance has only 20cm-30cm, so short pipeline, and doctor's operation is just relatively easy.

The utility model content

(1) technical problem that will solve

The technical problems to be solved in the utility model provide a kind of can to the asymmetry valve reclaim and can direct motion method approach promptly from the valve induction system of apex of the heart approach.

(2) technical scheme

In order to solve the problems of the technologies described above, this utility model provides a kind of valve induction system of implanting valve through the apex of the heart, comprise control unit, supply unit, described control unit is connected with described supply unit, and described supply unit is used for loading, carries, discharges and reclaims valve; Described control unit is used to control conveying, release and the recovery of described valve.

Further, described supply unit comprises sheath pipe, push rod, fixed bar and fixing head;

The length of described push rod is greater than the length of described fixed bar, the described fixed bar of described push rod outer surface socket, described fixed bar and described push rod one end connect described control unit, the described fixed bar other end connects described fixing head, described fixing head is used for fixing described valve, and described push rod can move forward and backward with respect to fixed bar;

Described sheath pipe is positioned at the outermost layer of supply unit, described sheath pipe comprises the near-end epitheca and loads the sheath pipe, described near-end epitheca is connected with described control unit, described near-end epitheca is identical with the phase proximal end radial dimension that loads the sheath pipe, described loading sheath pipe is connected with soft tip in the opposite end of near-end mutually with described near-end epitheca, the inside and the described push rod of described loading sheath pipe and soft tip link are fixed, and described loading sheath pipe can move forward and backward along with push rod;

Described near-end epitheca and the butt joint of loading sheath pipe, valve is loaded in the described loading sheath pipe.

Further, described fixing head is provided with hook, and described hook is used for fixing valve.

Further, described control unit comprises shell, is positioned at haemostatic valve, first fixture, second fixture and the conveying and controlling mechanism of described enclosure;

One end of wherein said haemostatic valve connects described near-end epitheca, and the other end connects described first fixture;

Described first fixture connects the end of described fixed bar and fixing head opposite end;

Described first fixture can move along housing together with haemostatic valve, fixed bar and near-end epitheca;

Described second fixture, one end connects described push rod, and described push rod is with respect to described housing axial restraint;

Described conveying and controlling mechanism connects the end of described second fixture and described push rod opposite end, is used to push described second fixture and moves along housing in described housing.

Further, described conveying and controlling mechanism comprises mother nut and screw rod;

Described mother nut can move along housing, and described mother nut is fixedlyed connected with described screw rod, and described screw rod one end connects described second fixture; By mobile mother nut, described screw rod is along the housing displacement, described second fixture of push-and-pull.

Further, described conveying and controlling mechanism comprises mother nut and screw rod;

Described mother nut is fixed with respect to described housing, and described screw rod is threaded with described mother nut, and an end connects described second fixture; By rotary screw, described screw rod is along the housing displacement, described second fixture of push-and-pull.

Further, the valve that described valve induction system is carried is the asymmetry valve, the two ends size difference after described asymmetry valve launches.

(3) beneficial effect

Valve induction system and operational approach through apex of the heart implantation valve that technique scheme provides, this system can implant from swollen type asymmetry valve by apex of the heart puncture.Contrast balloon-expandable valve system, this system can reorientate, contrast existing self-expanding valve system, puncture than having lacked more than 70% through the apex of the heart from the path of femoral artery puncture, controllability improves greatly, and native system improved the mode that articulates of valve and fixing head, and valve is reclaimed becomes possibility.

Description of drawings

Fig. 1 is the structural representation of the valve induction system of this utility model embodiment when loading described asymmetry valve;

Fig. 2 is the structural representation of the valve induction system of this utility model embodiment when discharging described asymmetry valve;

Fig. 3 is the structural representation of the supply unit when the asymmetry valve discharges fully among this utility model embodiment;

Fig. 4 is the structural representation of the supply unit when the asymmetry valve partly discharges among this utility model embodiment;

Fig. 5 is the control unit structural representation of the valve induction system of this utility model embodiment;

Fig. 6 is the method approach sketch map that drives in the wrong direction in the prior art;

Fig. 7 is a direct motion method approach sketch map among this utility model embodiment;

Fig. 8 is asymmetry valve and a fixing head connection diagram among this utility model embodiment;

Wherein, 1: load the sheath pipe; 2: push rod; 3: fixing head; 4: fixed bar; 5: the near-end epitheca; 6: the asymmetry valve; 7: haemostatic valve; 8: the first fixtures; 9: the second fixtures; 10: mother nut; 11: screw rod; 12: shell; 13: swing arm; 14: hook; 15: the carry unit; 16: supply unit; 17: control unit; 18: soft tip; 19: the sheath pipe.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used to illustrate this utility model, but are not used for limiting scope of the present utility model.

In conjunction with Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the valve induction system of this utility model embodiment when loading asymmetry valve 6; Fig. 2 is the structural representation of the valve induction system 16 of this utility model embodiment when discharging asymmetry valves 6.The valve induction system that present embodiment provides is used to carry asymmetry valve 6 to implant from the apex of the heart, owing to the directivity that has of asymmetry valve 6, as the corevalve valve.Asymmetry valve 6 can be expanded and compress, and the valve induction system comprises that control unit 17, supply unit 16 control units 17 are connected with supply unit 16.The asymmetry valve 6 that this utility model induction system is carried is that its characteristics of self-inflated valve are longer than balloon-expandable valve, consider anatomical structure, for reduce the influence of valve to human body as far as possible, it is not that cylindrical shape is an asymmetry that asymmetry gets involved valve, and two ends differ in size.Asymmetry valve 6 can be loaded in the inside or the top of supply unit 16.The supply unit 16 inner asymmetry valves 6 that load in this utility model; Supply unit 16 is used for carrying, discharges and reclaims asymmetry valve 6; Control unit 17 is used to control conveying, release and the recovery of 16 pairs of asymmetry valves 6 of supply unit.The use of whole valve induction system need be pushed ahead through the guiding of seal wire.Because seal wire is the basic fundamental of this area, so do not embody among the figure, seal wire is connected the top of supply unit 16.As shown in Figure 1,6 compressions of asymmetry valve are loaded in the supply unit 16, the propelling movement and the release of 16 pairs of asymmetry valves 6 of control unit 17 control supply units.When arriving the precalculated position, as shown in Figure 2,16 controls of 17 pairs of supply units of control unit discharge asymmetry valve 6, just cover original pathological changes valve.

In conjunction with Fig. 3 and Fig. 4, Fig. 3 is the structural representation of the supply unit 16 when the asymmetry valve discharges fully among this utility model embodiment; Fig. 4 is the structural representation of the supply unit 16 when the asymmetry valve partly discharges among this utility model embodiment.Supply unit 16 comprises sheath pipe 19, push rod 2, fixed bar 4 and fixing head 3; The length of push rod 2 is greater than the length of fixed bar 4, push rod 2 outer surface socket fixed bars 4, and fixed bar 4 and push rod 2 one ends connect control unit 17, and fixed bar 4 other ends are connected and fixed 3, and fixing head 3 is used for fixing the asymmetry valve; Push rod 2 can move forward and backward with respect to fixed bar 4; Sheath pipe 19 is positioned at the outermost layer of supply unit 16, sheath pipe 19 comprises near-end epitheca 5 and loads sheath pipe 1, near-end epitheca 5 can slide relatively with loading sheath pipe 1, and near-end epitheca 5 is connected with control unit 17, and near-end epitheca 5 is identical with the phase proximal end radial dimension that loads sheath pipe 1.Near-end epitheca 5 is taked identical outside dimension with loading sheath pipe 1 phase proximal end, can guarantee the level and smooth of outer surface; Load sheath pipe 1 and be connected with soft tip 18 in the opposite end of near-end mutually with near-end epitheca 5, it is fixing with the inside and the push rod 2 of soft tip 18 links to load sheath pipe 1, and loading sheath pipe 1 can be along with push rod 2 moves forward and backward; Adopting soft tip 18 is to push ahead the valve induction system smoothly in order to comply with seal wire, and not can to organizing of process do not cause damage.

The valve induction system guides through seal wire, near- end epitheca 5 and 1 butt joint of loading sheath pipe in the valve induction system course of conveying, and the asymmetry valve can be compressed in and load in the sheath pipe 1; The valve induction system is when seal wire is directed to the precalculated position, push rod 2 pushes near-end epitheca 5 makes near-end epitheca 5 and loading sheath pipe 1 be opened to the expansion of asymmetry valve 6 parts, the position of valve induction system is if not precalculated position accurately, then push rod 2 is pulled back, drive and load sheath pipe 1, asymmetry valve 6 is reclaimed to advance to load in the sheath pipe 1 again, and the valve induction system is readjusted the position, reaches precalculated position accurately up to the position of asymmetry valve 6; Push rod 2 pushes, and drive loading sheath pipe 1 is separated to the asymmetry valve with near-end epitheca 5 and expands fully, thereby covers original pathological changes valve.

The asymmetry valve is connected mechanically with fixing head 3, and connected mode can be referring to patent ZL201020247378.9.As shown in Figure 8, Fig. 8 is an asymmetry valve 6 and fixing head connection diagram among this utility model embodiment, and the asymmetry valve that provides in this utility model comprises carry unit 15, and fixing head 3 comprises hook 14, and carry unit 15 is stuck on the hook 14.Link up with 14 embedded design on fixing head 3, the carry unit 15 of asymmetry valve 14 matches with hook, and this kind connected mode is more firm, avoided asymmetry valve 6 when reclaiming and fixing head come off.As shown in Figure 8, shown in, the hook 14 on fixing head 3 is affiliated in carry unit 15 on the asymmetry valve, forms firm articulating.

As shown in Figure 5, Fig. 5 is the control unit structural representation of the valve induction system of this utility model embodiment.Control unit 17 comprises shell 12 and is positioned at haemostatic valve 7, first fixture 8, second fixture 9 and the conveying and controlling mechanism of enclosure.Haemostatic valve 7 connects near-end epitheca 5, and the other end connects first fixture 8; First fixture 8 is connected and fixed the end of bar 4 and fixing head 3 opposite ends; First fixture 8 can move along housing 12 together with haemostatic valve 7, fixed bar 4 and near-end epitheca 5; Second fixture, 9 one ends connect push rod 2, and push rod 2 is with respect to housing 12 axial restraints; Conveying and controlling mechanism 16 connects the end of second fixture 9 and push rod 2 opposite ends, is used to push second fixture 9 and moves along housing in housing 12.

First fixture 8 axial restraint in housing 12 is motionless, can not rotate in housing and along with rotation, fixed bar 4 is played firm effect because of first fixture 8.First fixture 8 can move along housing 12 directions together with haemostatic valve 7, fixed bar 4 and near-end epitheca 5, realizes the promotion to fixed bar 4 and near-end epitheca 5.Second fixture 9 can be arranged in the housing 12 and slide along housing 12 inwalls, realizes the promotion to push rod 2.But push rod 2 can be because second fixture 9 rotates in housing along with rotation with respect to housing 12 axial restraints.Push rod 2 drives loads sheath pipe 1 promotion forward, separate with near-end epitheca 5, after loading the valve release in the sheath pipe, can carry out multiple adjustment according to the residing position of induction system: first fixture 8 maintains static, second fixture 9 slides backward, drive push rod 2 and load sheath pipe 1, realize loading sheath pipe 1 and form complete smooth sheath pipe with near-end epitheca 5; Second fixture 9 maintains static, and first fixture 8 is to front slide, and then pushes haemostatic valve 7, fixed bar 4 and near-end epitheca 5 and move forward along housing 12 together, and loads sheath pipe 1 and forms smooth sheath pipe; First fixture 8 is all relative with second fixture 9 mobile, drives near-end epitheca 5 respectively and loads sheath pipe 1 and relatively move and then merge and form complete smooth sheath pipe.

Conveying and controlling mechanism 16 comprises mother nut 10 and screw rod 11; Mother nut 10 can move along housing 12, and mother nut 10 is fixedlyed connected with screw rod 11, and screw rod 11 1 ends connect second fixture 9; By mobile mother nut 10, screw rod 11 is along housing 12 displacements, push-and-pull second fixture 9.Mother nut 10 also is a travelling nut with respect to housing 12, mother nut moves forwards or backwards along housing 12, thereby drives screw rod 11, drives second fixture 9 accordingly, move forwards or backwards thereby drive push rod 2 and load sheath 1, thereby discharge or the recovery valve.

Mother nut 10 also can be fixing with respect to housing 12, and screw rod 11 is threaded with mother nut 10, and an end connects second fixture 9; By rotary screw 11, screw rod 11 is along housing 12 displacements, push-and-pull second fixture 9.Mother nut 10 is a hold-down nut with respect to housing 12, the screw thread that mates with mother nut is arranged on the screw rod 11, and screw rod 11 can rotate in mother nut 10, and screw rod 11 can drive second fixture 9, move forwards or backwards thereby drive push rod 2 and load sheath 1, thereby discharge or the recovery valve.

Conveying and controlling mechanism also comprises knob 13, and knob 13 is connected with screw rod 11, and knob is used for promoting or rotary screw 11.It is hand-held by knob 13 is set in order to increase the moment of regulating or to be convenient to the operator.Knob 13 can be set to push or rotary screw 11 as required, is convenient to operator's operation.Can also on knob 13, be provided with as graduation mark, position-limit mechanism etc. and be convenient to the mechanism that the operator observes and operates.

A kind of this utility model provides the method for valve induction system in that the patient body is implanted into valve, comprising:

Step 1, do little otch in front, a patient left side, expose the apex of the heart, silk guide passage is set up in puncture, channel direction as shown in Figure 7, Fig. 7 is a direct motion method approach sketch map among this utility model embodiment, Fig. 6 is traditional retrograde method from the femoral artery approach, adopt direct motion method approach promptly to puncture than having lacked more than 70% from the path of femoral artery puncture through the apex of the heart, controllability improves greatly;

Step 2 is sent to the precalculated position with the valve induction system along seal wire;

Step 3, in the precalculated position, control unit 17 promotes push rod 2 forward, drives to load sheath pipe 1 forward; Load sheath pipe 1 and separate with near-end epitheca 5, asymmetry valve 6 parts extend; Confirm whether to be accurate to reach the precalculated position;

Step 4, not accurate enough for avoiding when discharging the asymmetry valve position, and cause the waste of valve, when the precalculated position that arrives is inaccurate, control unit 17 pulls back push rod 2, merges with described near-end epitheca 5 thereby load sheath pipe 1, adjusts the position of valve induction system.Again discharge after the adjustment, the off-position of guaranteeing asymmetry valve 6 is for best, and the balloon-expandable valve of comparing in the past has very big advantage.

Step 5 is loaded sheath pipe 1 and is separated fully with near-end epitheca 5, and asymmetry valve 6 is discharged into the precalculated position of sufferer, covers original pathological changes valve;

Step 6, asymmetry valve 6 discharges to be finished, and the valve induction system restores to the original state, and withdraws from.

Remove for returning of valve induction system, can select step 6 valve induction system to restore to the original state to be, near-end epitheca 5 is pushed ahead and is loaded sheath pipe 1 and be connected.Step 6 valve induction system restores to the original state, and loading sheath pipe 1 is drawn back and is connected with near-end epitheca 5.Above-mentioned two kinds of methods promptly select near-end epitheca 5 and loading sheath pipe 1 docking mode to select flexibly, and the principle of selection is not damage the asymmetry valve valve that has discharged as far as possible, and considers the influence of aortic arch to system.

As can be seen from the above embodiments, this utility model embodiment by the valve induction system implanted through the apex of the heart can condition at little otch under, the asymmetry valve of self-inflated is implanted to the sufferer position from the apex of the heart by interventional method, controllability is better than present from the femoral artery implant system, can't adjust the balloon-expandable valve of position after also being better than discharging.Native system has improved the mode that articulates of asymmetry valve and fixing head, and the asymmetry valve is reclaimed becomes possibility.

The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from this utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.

Claims (7)

1. the valve induction system through apex of the heart implantation valve comprises control unit, supply unit, and described control unit is connected with described supply unit, it is characterized in that,

Described supply unit is used for loading, carries, discharges and reclaims valve;

Described control unit is used to control conveying, release and the recovery of described valve.

2. valve induction system according to claim 1 is characterized in that described supply unit comprises sheath pipe, push rod, fixed bar and fixing head;

The length of described push rod is greater than the length of described fixed bar, the described fixed bar of described push rod outer surface socket, described fixed bar and described push rod one end connect described control unit, the described fixed bar other end connects described fixing head, described fixing head is used for fixing described valve, and described push rod can move forward and backward with respect to fixed bar;

Described sheath pipe is positioned at the outermost layer of supply unit, described sheath pipe comprises the near-end epitheca and loads the sheath pipe, described near-end epitheca is connected with described control unit, described near-end epitheca is identical with the phase proximal end radial dimension that loads the sheath pipe, described loading sheath pipe is connected with soft tip in the opposite end of near-end mutually with described near-end epitheca, the inside and the described push rod of described loading sheath pipe and soft tip link are fixed, and described loading sheath pipe can move forward and backward along with push rod;

Described near-end epitheca and the butt joint of loading sheath pipe, valve is loaded in the described loading sheath pipe.

3. valve induction system according to claim 2 is characterized in that described fixing head is provided with hook, and described hook is used for fixing valve.

4. valve induction system according to claim 2 is characterized in that, described control unit comprises shell, is positioned at the haemostatic valve of described enclosure, first fixture, second fixture and conveying and controlling mechanism;

One end of wherein said haemostatic valve connects described near-end epitheca, and the other end connects described first fixture;

Described first fixture connects the end of described fixed bar and fixing head opposite end;

Described first fixture can move along housing together with haemostatic valve, fixed bar and near-end epitheca;

Described second fixture, one end connects described push rod, and described push rod is with respect to described housing axial restraint;

Described conveying and controlling mechanism connects the end of described second fixture and described push rod opposite end, is used to push described second fixture and moves along housing in described housing.

5. valve induction system according to claim 4 is characterized in that described conveying and controlling mechanism comprises mother nut and screw rod;

Described mother nut can move along housing, and described mother nut is fixedlyed connected with described screw rod, and described screw rod one end connects described second fixture; By mobile mother nut, described screw rod is along the housing displacement, described second fixture of push-and-pull.

6. valve induction system according to claim 4 is characterized in that described conveying and controlling mechanism comprises mother nut and screw rod;

Described mother nut is fixed with respect to described housing, and described screw rod is threaded with described mother nut, and an end connects described second fixture; By rotary screw, described screw rod is along the housing displacement, described second fixture of push-and-pull.

7. valve induction system according to claim 1 is characterized in that, the valve that described valve induction system is carried is the asymmetry valve, the two ends size difference after described asymmetry valve launches.

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