CN109758192A - Medical device - Google Patents
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- CN109758192A CN109758192A CN201711104777.2A CN201711104777A CN109758192A CN 109758192 A CN109758192 A CN 109758192A CN 201711104777 A CN201711104777 A CN 201711104777A CN 109758192 A CN109758192 A CN 109758192A
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- implant
- tightening system
- medical device
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Abstract
The present invention provides a kind of medical device, help to promote the validity and stability being anchored in myocardium fixation, additionally aids the effect for promoting cardiac muscle tightening.The medical device includes: the first implant, for contacting with the first wall of implantation object；Second implant, for being contacted with the second wall of implantation object；Tightening system is connect with the first implant, and the tightening system passes through locking mechanism, and the locking mechanism and tightening system are cooperatively connected, and second implant can be moved along tightening system to the direction close to the first implant；When deformation occurs for the tightening system and/or locking mechanism, second implant can be moved along tightening system to the direction far from the first implant.
Description
Technical field
The present invention relates to the field of medical instrument technology, in particular to a kind of medical device for cardiac morphology adjustment.
Background technique
Heart failure is the terminal stage of most cardiovascular disease.Although the application of heart failure medications in the past 20 years, makes patients with heart failure
It is obvious to benefit, but the death rate of terminal phase patients with heart failure is still high.The pathophysiological basis of heart failure is heart reconstruction.
Heart reconstruction clinically shows as the expansion of ventricle progressive, heart contraction and diastolic function and is damaged, and continues to develop with heart failure
Increase with the death rate related.
It is presently recommended that angiotensin converting enzyme inhibitor (ACEI)/Angiotensin Ⅱ receptor antagonist, beta receptor resistance
Stagnant dose, aldosterone receptor antagonist and following cardiac resynchronization therapy (CRT) can slow down or reverse the reconstruct of left ventricle, improve
The clinical prognosis of patients with heart failure.Certainly, consequently also there are some miniature wound interventional medical devices in relation to heart failure, substantially have
Following two:
One, left ventricle isolating device (Parachute)
Left ventricle " parachute (Parachute) " is left ventricular insufficiency caused by treatment antetheca apical myocardium infarct
Implantable Medical Device.After Anterior wall myocardial infarction, heart contraction and diastolic function are impaired.Specifically, paradoxical expansion, left ventricle
The inappropriate contraction of apex, it is asynchronous with other ventricle walls, lower the overall output amount of heart；Diastole, apex
Cicatrization increase the filling pressure in ventricular diastole latter stage；In this way, eventually lead to left ventricle volume load, ventricle wall
Power increases.So, it is implanted into Parachute in apex, it on the one hand can be by the normal geometric shape of recovery left ventricle, to reduce
Volume load is to reduce the wall tension of left ventricular cavity upper portion, on the other hand by improving the same of myocardium of apex of heart contraction
Step property further decreases left ventricular filling pressure, improves myocardium output quantity.
By in June, 2016, the whole world have nearly 500 ischemic cardiomyopathies (NYHA be classified III~IV, LVEF 15%~
40%) patient is implanted into Parachute, and surgical procedure success rate is up to 95.5%, postoperative complication (including pericardial tamponade, aorta
The damage of valve, left ventricle perforation etc.) incidence is 8.2%.Moreover, follow-up observation 24 months, compared with Baseline Data, implantation
The patients with heart failure of Parachute device, left ventricular end diastolic and end-systolic volume index (ml/m2) are substantially reduced (105.3
±25.1 vs 123.1±23.1；77.3±21.2 vs 89.1±21.4；P<0.0001)；Most of patients NYHA classification by
III is reduced to I~II grades；Walking distance increases (391m vs 369m, P < 0.005) within 6 minutes；Potential stroke incidence about 5.3%；
2 years All-cause death rates about 9.9%.
Thus, it could be seen that Parachute Major Vessels complication is low compared with TAVR operation (aortic valve replacement), and improve the heart
Dirty contraction and the effect of diastolic function are suitable with CRT treatment；NYHA classification can be reduced, 6 minutes walking distances are improved.
Two, myocardium anchoring device (Revivent Myocardial Anchoring System)
Myocardium anchoring techniques are a kind of surgery intervention operations that is relatively easy, not needing extracorporal circulatory system support.Pass through intervention
The necrosis of anchor antetheca, ungauged regions ability cardiac muscle, restore the geometric shape and function of left ventricle.With traditional surgery heart
Room volume reduction art is compared, and myocardium anchoring techniques are a kind of invasive relatively small operations, is not needed the support of extracorporal circulatory system, is not required to
Left ventricular free wall necrotic myocardium is cut off, suture and sticking patch are not required to, it is relatively fewer to the damage of left ventricle.
There are 2 clinical trials carrying out in Europe at present, advanced stage Ischemic Cardiomyopathy row cardiac muscle is anchored and is performed the operation.With
Visit observation 30 days, 1 year, 2 years survival rates be respectively 90.7%, 88.7% and 87.1%, compared with traditional treatment method, hence it is evident that
Improve the survival rate of advanced heart failure patient；It is postoperative, 2 years, 1 year, 6 months left ventricular contraction volume indexs compared with baseline,
It is obviously improved (median is 44.1,46.7,49.3 and 68.5 respectively), walking distance is improved within LVEF and 6 minute, and steady
Surely it maintains 2 years.
However, it is found by the inventors that existing cardiac muscle anchoring device, validity and stability of anchoring etc. are both needed to improve, together
When there is also it is complicated for operation the problems such as.
Summary of the invention
In view of this, the present invention provides a kind of medical device, help to promote the validity being anchored in myocardium anchoring device
And stability, additionally aid the effect for promoting cardiac muscle tightening.
To achieve the above object, the present invention provides a kind of medical devices, comprising:
First implant, for being contacted with the first wall of implantation object；
Second implant, for contacting with the second wall of the implantation object, second implant includes locking mechanism；
And
Tightening system is connect with first implant, and the tightening system passes through the locking mechanism, the locking machine
Structure and the tightening system are cooperatively connected, and second implant can be along the tightening system to close to first implant
Direction it is mobile；
When deformation occurs for the locking mechanism and/or the tightening system, second implant can be along the receipts
Tight mechanism is mobile to the direction far from first implant.
Optionally, the tightening system includes connector and the movable buckle being located on the connector.
Optionally, the movable buckle is spring-loaded plunger, and the spring-loaded plunger includes flexible connector and is located at described
The protruding part at flexible connector both ends.
Optionally, the movable buckle is elastic component, and the elastic component protrudes from the connector and can be along the company
The direction of fitting is bent.
Optionally, the locking mechanism includes groove, and the groove is for accommodating the movable buckle.
Optionally, the movable buckle is uniformly distributed on the connector.
Optionally, the locking mechanism is a fastener, and the tightening system includes an at least groove, the fastener
Fastening end is located in the groove.
Optionally, the fastener further includes pedestal and the force side that is movably set on the pedestal；When it is described by
When the stress of power end, the fastening end is detached from the groove.
Optionally, the medical device further includes force measuring machine, the power being subject to for measuring second implant.
Optionally, the medical device further includes delivery device, and the delivery device is for driving second implant
Along the tightening system close to or far from first implant.
Optionally, first implant and/or the tightening system include flexible portion, close to the tightening system with
The position that first implant is connected is used for and the implantation object contact.
Optionally, the flexible portion has large scale section and small size section, and the cross sectional dimensions of the large scale section is big
In the cross sectional dimensions of the small size section, and the large scale section is close to first implant.
Optionally, first implant includes anchor portion and the flexible portion, and the anchor portion is with movable
Mode be arranged in shaft, the tightening system is connect with the shaft, and the flexible portion is coated on the tightening system
On.
Optionally, when second implant is far from the first implant, the implantation object is in first state, works as institute
When stating the second implant far from the first implant, the implantation object is in the second state.
Optionally, the implantation object includes cavity, and the cavity volume of the implantation object under the second state is less than
The cavity volume of the implantation object under one state.
According to the technique and scheme of the present invention, first implant and the second implant can pass through receipts in medical device of the invention
Tight mechanism and locking mechanism realize the adjustment of relative position, once in surgical procedure, the position of any one implant is bad, i.e.,
Using tightening system and locking mechanism, the relative position of the second implant and the first implant is readjusted, and adjusts process
In, second implant can be moved along the tightening system to the direction close to or far from first implant, so
One, ventricle can be made to reach preferably tightening effect, and then effectively improve the function of ventricle, promote surgical effect, and
Implant fixed validity and stability.
Detailed description of the invention
Attached drawing for a better understanding of the present invention, does not constitute an undue limitation on the present invention.Wherein:
Fig. 1 is the structural schematic diagram of the medical device of one embodiment of the invention；
Fig. 2 a is the intracardiac schematic diagram equipped with seal wire of one embodiment of the invention；
Fig. 2 b is the intracardiac schematic diagram for being implanted with the first implant of one embodiment of the invention；
Fig. 2 c is the intracardiac schematic diagram for being implanted with the first implant and the second implant of one embodiment of the invention；
Fig. 2 d is the intracardiac schematic diagram by after the first implant and the tightening of the second implant of one embodiment of the invention；
Fig. 3 a is first implant of one embodiment of the invention and the schematic diagram that tightening system is connected together；
Fig. 3 b is that first implant of one embodiment of the invention is loaded into the schematic diagram in delivery sheath with tightening system；
Fig. 3 c is the schematic diagram that the first implant shown in Fig. 3 b is detached from after delivery sheath；
Fig. 4 is second implant of one embodiment of the invention and the schematic diagram that delivery device is connected together；
Fig. 5 a is the schematic diagram of the medical device of one embodiment of the invention, and wherein locking mechanism passes through elastic buckles and tightening machine
Groove cooperation on structure；
Fig. 5 b is the partial enlarged view of medical device shown in Fig. 5 a；
Fig. 5 c is that the tightening system of one embodiment of the invention is equipped with the schematic diagram of circular through hole；
Fig. 6 a is the schematic diagram of the medical device of one embodiment of the invention, and wherein locking mechanism passes through card hole and tightening system
On indent interference fit；
Fig. 6 b is the partial enlarged view of tightening system shown in Fig. 6 a；
Fig. 7 is the schematic diagram of the medical device of one embodiment of the invention, and wherein locking mechanism passes through card slot and tightening system
On boss cooperation；
Fig. 8 is the schematic diagram of the medical device of one embodiment of the invention, and wherein locking mechanism passes through groove and tightening system
On elastic component cooperation；
Fig. 9 is the schematic diagram of the medical device of one embodiment of the invention, and wherein locking mechanism passes through groove and tightening system
On resilient plunger cooperation.
The reference numerals are as follows:
The first implant of 1-, 11- anchor portion, 12- flexible portion, 13- shaft；
The second implant of 2-, 21- anchor portion, 22- locking mechanism, 23- elastic buckles, 24- pedestal, 25- card hole, 26- card slot,
27- groove；
3- tightening system, 31- connector, 32- lockhole, 33- surface bulge, concave space in 34-, 35- boss, 36- elasticity
Part, 37- protruding part, 38- flexible connector；
4- delivery device, 41- push pipe；
5- force measuring machine,
6- seal wire；
7- delivery sheath.
Specific embodiment
To keep the purpose of the present invention, advantages and features clearer, below in conjunction with 1~9 couple of doctor proposed by the present invention of attached drawing
Device is treated to be described in further detail.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio
Example, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As used in this specification, singular "a", "an" and "the" includes plural reference, unless interior
In addition appearance explicitly points out outer.It is as used in this specification, term "or" be usually to include the meaning of "and/or" and into
Enforcement, in addition in addition non-content explicitly points out.Term " proximal end " typically refers to one end that counterpart member depends on proximal operator,
" distal end " refers to the one end of counterpart member far from operator.As used in this specification, term " inside " typically refers to
Close to the axis direction of counterpart member, term " outside " typically refers to the axis direction far from counterpart member.
Medical device of the invention is mainly used for myocardium fixation, to treat antetheca necrosis, without receipts by the implant of intervention
The cardiac muscle of contracting ability restores the geometric shape and function of left ventricle.
Fig. 1 is the schematic diagram for the medical device that one embodiment of the invention provides, and medical device therein includes the first implantation
Body 1, the second implant 2 and tightening system 3, and it is also preferable to include delivery device 4 and force measuring machines 5.First implantation
Body 1 is connect with tightening system 3, such as the connection of detachable or non-dismountable formula, and second implant 2 includes locking mechanism
22, for being cooperatively connected with tightening system 3.The mating connection refers to shape mutual of locking mechanism 22 and tightening system 3
Match or be mutually adapted, one of component can be fastened in another component, in no external force or be not above restriction external force
Under conditions of be able to achieve it is opposing stationary.
When the locking mechanism 22 is connect with tightening system 3, it is equivalent to and locks the second implant 2 and the first implant 1
It is fixed；It is any in second implant 2 and the first implant 1 when the locking mechanism 22 is released with tightening system 3 to be connected
One can relative to another movement, it is clear that first implant 1 by operate tightening system 3 can be realized relative to
The movement of second implant 2, however, passing through any one in operation tightening system 3 and locking mechanism 22, it can adjust the
Corresponding tightening function is realized with this in the relative position of two implants 2 and the first implant 1.
Fig. 2 a is the intracardiac schematic diagram equipped with seal wire 6 that one embodiment of the invention provides, and Fig. 2 b is one embodiment of the invention
The intracardiac schematic diagram for being implanted with the first implant 1 provided, Fig. 2 c are that the intracardiac of one embodiment of the invention offer is implanted with first
The schematic diagram of implant 1 and the second implant 2, it is intracardiac by the first implant 1 and that Fig. 2 d is that one embodiment of the invention provides
Two implants 2 tightening after schematic diagram, wherein the medical device of the present embodiment can in a manner of shown in a to Fig. 2 d according to fig. 2 into
Row implant procedure, specifically:
As shown in Figure 2 a, a transfer passage can be established in heart by a seal wire 6 first, which includes the left heart
Room LV, right ventricle RV and septum of ventricles of heart SE；
Then, as shown in Figure 2 b, enable carry the delivery sheath (not shown) of the first implant 1 and tightening system 3 along
Seal wire 6 enters right ventricle RV, removes the delivery sheath then to discharge the first implant 1 and tightening system 3, after release, institute
It states the first implant 1 and contacts and fix with the septum of ventricles of heart SE one side wall for being located at right ventricle RV, and a part of the tightening system 3
At least need to even it be stretched out external in the outside of left ventricular LV；
Then, as shown in Figure 2 c, the second implant 2 is put to the outside of left ventricular LV, hereafter, pull tightening system 3 or
Together with other modes, the relative position of the second implant 2 and the first implant 1 can be changed, thus inwardly to squeeze
Mode adjusts the geometric shape of left ventricular LV；
In turn, after tightening above-mentioned operation, cardiac structure shown in available Fig. 2 d, at this point, the locking machine
Structure 22 is locked with 3 phase of tightening system, to fix the geometric shape of left ventricular LV, so that the function of left ventricular LV is available
Improvement even restores.It should be noted that hatching is omitted in the cardiac structure in Fig. 2 d, it is actually shown in Fig. 2 c
State of the cardiac structure (mainly left ventricular LV) after tightening.Obviously, after being adjusted, the left ventricular LV of the present embodiment from
First state is changed into the second state, and the volume of the left ventricular LV under the second state is significantly less than the left ventricle under first state
The volume of LV.
So, compared with prior art, first implant 1 and the second implant 2 can pass through tightening system 3 and locking
Mechanism 22 realizes that the adjustment of relative position can release tightening once in surgical procedure, the position of any one implant is bad
The locking relation of mechanism 3 and locking mechanism 22 is readjusted the relative position of the second implant 2 and the first implant 1, and is adjusted
In the process, second implant 2 can be moved along tightening system 3 to the direction close to or far from the first implant 1, and such one
Come, ventricle can be made to reach preferably tightening effect, and then effectively improve the function of ventricle, promote surgical effect, Yi Jizhi
Enter body fixed validity and stability.
In the present embodiment, one or more of first implant 1 and the second implant 2 may be designed as anchor log,
The body shape of the anchor log can be the regular figures such as strip, disc.In addition, the medical device may include that multiple groups are planted
Enter body, every group of implant includes connected the first implant 1 and the second implant 2.Multiple groups implant is planted with above-mentioned mode of operation
Enter the different location in heart, the geometric shape of left ventricle is preferably adjusted with this, reaches better surgical effect.
As preferred delivery device 4, it can be detachable connection with the second implant 2, be also possible to its other party
Formula combines, as long as delivery device 4 can be enabled to push the second implant 2.Second implant 2 is placed in left ventricular LV
Outside after (such as contacted with the side wall of left ventricle), by the combination of delivery device 4 and the second implant 2, second can be pushed
Implant 2 applies pressure to left ventricular LV, can also realize corresponding tightening operation (as shown in Figure 2 d), and completes after tightening operates, just
Delivery device 4 can be withdrawn in vitro.Certainly, the delivery device 4 in addition to the second implant 2 of driving along tightening system 3 close to the
Outside one implant 1, the second implant 2 can also be driven along tightening system 3 far from the first implant 1.
In the present embodiment, when adjusting the relative position of the first implant 1 and the second implant 2, both can unilaterally it draw
Dynamic tightening system 3, can also operate tightening system 3 and delivery device 4, i.e. delivery device 4 is pushed away to 1 direction of the first implant simultaneously
It send the second implant 2, while pulling tightening system 3 to 2 direction of the second implant, tighten so more efficient, tightening effect is more
It is good.
With continued reference to Fig. 1, the delivery device 4 may include a hollow push pipe 41, the distal portion of the push pipe 41
For being combined with the second implant 2.The distal portion of the push pipe 41 may be selected with the second implant 2 with screw thread, buckle, bullet
The easy-operating modes such as button are attached.In practice, the inner cavity that the tightening system 3 may pass through push pipe 41 stretch out it is external, with
Just doctor operates tightening system 3 in vitro.
The mountable force measuring machine 5 of distal portion of the push pipe 41, the force measuring machine 5 can be one or more and answer
Become piece to constitute, for measuring tightening force suffered by the second implant 2 (i.e. the pulling force that receives of tissue wall or pressure).It is not limited to
This, the force measuring machine 5 also may be provided in external, for example be set to external tensiometer, for measuring suffered by tightening system 3
Pulling force, to know tightening force suffered by the second implant 2, so as to doctor can the tightening force determine having for tightening operation
Effect property and safety, such as judge whether that tightening force is excessive and tissue occur and the risks such as punched.
Fig. 3 a is the schematic diagram that the first implant 1 that one embodiment of the invention provides is connected together with tightening system 3,
In the first implant 1 preferably include anchor portion 11 and flexible portion 12, the anchor portion 11 preferably with 3 turns of tightening system
Dynamic connection, so that anchor portion 11 can be rotated relative to tightening system 3, to enable anchor portion 11 can be with the side of rotation
Formula is collapsible into delivery sheath.For example, the anchor portion 11 is pivotally socketed in a shaft 13, and
The shaft 13 is connected with tightening system 3.Optionally, the anchor portion 11 is pitched equipped with U-shaped, and the two side arms of the U-shaped fork are logical
Shaft 13 is crossed to realize hingedly.
Separately optionally, the place being connected on the tightening system 3 with shaft 13 is covered with one section of flexible portion 12, described soft
Property part 12 have flexibility.Either, the place being connected on the tightening system 3 with shaft 13 is directly machined with one section of flexibility
Section, the compliant section are used to replace the flexible portion 12 and play corresponding function.
Specifically, the flexible portion 12 is used to contact with septum of ventricles of heart SE and (see Fig. 2 d), such as a part insertion
Inside septum of ventricles of heart SE, another part is contacted in the side right ventricle RV with the outer wall of septum of ventricles of heart SE, it is also possible that the flexible portion
12 overall dimension, which is contacted in the side right ventricle RV with the outer wall of septum of ventricles of heart SE, (does not have the structure of any substance to enter room
In interval).The flexible portion 12 can not only be presented as flexibility in structure, can also also be presented as in the selection of material soft
Property, when can guarantee that the first implant 1 is contacted with septum of ventricles of heart SE in this way, relaxation degree of having, while reducing wound can also prevent the
One implant, 1 tension falls off.
In the embodiment of the present application, the anchor portion 11 covers flexible portion 12, to ensure to pass through anchor portion on the whole
11 act on septum of ventricles of heart SE to tighten left ventricular LV, and by the realization of flexible portion 12 and the contact of septum of ventricles of heart SE, in this way,
The frictional force that the first implant 1 is contacted with tissue can be increased, to prevent its tension in tightening process from falling off.
In addition, the flexible portion 12 can have large scale section and small size section, institute in one embodiment of the application
Large scale section to be stated to be arranged close to anchor portion 11, the small size section is arranged close to the second implant 2, and the large scale section
Cross sectional dimensions is greater than the cross sectional dimensions of the small size section, to enable flexible portion 12 that can have flexibility.For example, Fig. 3 a
Shown, the flexible portion 12 is configured to the structure of a similar light bulb, so as on the draw direction of tightening system 3
Has retractility.
Fig. 3 b is that the first implant 1 that one embodiment of the invention provides is loaded into delivery sheath 7 with tightening system 3
Schematic diagram, the anchor portion 11 of the first implant 1 therein can be rotated for almost with tightening system 3 point-blank, thus
Be loaded into delivery sheath 7, and the flexible portion 12 due to have flexibility, therefore can radial compression be loaded into delivery sheath 7
It is interior.
Fig. 3 c is the schematic diagram that the first implant 1 shown in Fig. 3 b is detached from after delivery sheath 7, when practical operation, to conveying
The proximal direction of sheath 7 pulls sheath, anchor portion 11 can be made to be detached from delivery sheath 7, and then anchor portion 11 is with suitable
Angle is contacted with septum of ventricles of heart SE.The rotational angle of the anchor portion 11 can be between 0~180 °, this range can guarantee anchor portion
Divide 11 can dispose in place.
Fig. 4 is the schematic diagram that the second implant 2 that one embodiment of the invention provides is connected together with delivery device 4,
For second implant 2 therein it is also preferable to include anchor portion 21, the locking mechanism 22 is set to the proximal end of anchor portion 21, and the two can be with
It is non-dismountable connection, may be a detachable connection, specifically with no restriction.When practical application, the anchor portion 21 be used for
The outer wall of left ventricular LV contacts, and the locking mechanism 22 and tightening system 3 are cooperatively connected.
Optionally, the locking mechanism 22 has a hollow cavity, to allow the connector 31 on tightening system 3 to wear
It crosses, i.e., tightening system 3 passes through locking mechanism 22.The connector 31 can be configured to elongate configuration, be used for and locking mechanism 22
It realizes and is cooperatively connected, and be also used to be connected (seeing Fig. 5 a) with aforementioned rotation axis 13.In the present embodiment, when the connector 31
When deformation occurs with one or two in locking mechanism 22, second implant 2 can be along connector 31 to far from first
The direction of implant 1 is mobile, it is of course also possible to mobile close to the direction of the first implant 1.
It, can one section of flexibility of additional coverage close to its position being connected with shaft 13 on the connector 31 with continued reference to Fig. 4
Part 12 is equivalent to alternatively, being directly machined with one section of compliant section close to its position being connected with shaft 13 on the connector 31
Flexible portion 12 is made in advance with connector 31 and is integrated.However, either which kind of mode, the flexible portion 12 and anchoring
Part 11, which must not generate interference, to be advisable.
Further, either the first implant 1 or the second implant 2, they wrap up one layer of macromolecule braided fabric,
It can not only realize the quick endothelialization of these implants, but also frictional force when contact can be increased, prevent from falling off.
Further, the connector 31 in the present embodiment, is matched in a manner of movable buckle, groove etc. with locking mechanism 22
Close connection.
In one embodiment, it is provided with movable buckle on the connector 31, the preferably described movable buckle is uniformly distributed
In on connector 31.It matches, the locking mechanism 22 includes at least one groove, at least one described groove can accommodate
The movable buckle, to realize the cooperation of locking mechanism 22 Yu connector 31.
In another embodiment, the locking mechanism 22 is a fastener, and includes at least on the connector 31
One groove, the fastening end of the fastener can be contained at least one described groove.
Subsequently, the fit system between tightening system 3 and locking mechanism 22 will be further described in conjunction with attached drawing.
As shown in Fig. 5 a~Fig. 5 c, the locking mechanism 22 is a fastener, and the fastener includes an elastic buckles
23 and pedestal 24, the elastic buckles 23 be set in a manner of mobilizable on pedestal 24, such as elastic buckles 23 are with can be relative to
The mode that pedestal 24 rotates is set on pedestal 24.The pedestal 24 is hollow design, to allow connector 31 to pass through.
In the present embodiment, the elastic buckles 23 can move under the driving of push pipe 41, and fastening end is sticked in connection
In lockhole 32 on part 31, and locked with lockhole 32.Wherein, when tightening bad, available push pipe 41 exerts a force F in elasticity
Then the force side of button 23 pulls or pushes connector 31, be detached from the fastening end of elastic buckles 23 and lockhole 32, can adjust again
The locked position of locking mechanism 22 and connector 31 is saved, after adjusting in place, elastic buckles 23 are discharged, so that the fastening end of elastic buckles 23
It is locked with lockhole 32, just can adjust the geometric shape of left ventricle more conveniently.However, the present invention is not limited to be implanted into first
1 direction of body pushes force side, can also be by pulling force side to external direction, so that the fastening end of elastic buckles 23 and lockhole
32 are detached from.
Wherein, the lockhole 32 is chosen as non-through groove, or the groove of perforation.The shape of the lockhole 32 is not
It is limited to rectangular, rectangle shown in Fig. 5 b, is also not necessarily limited to circle shown in Fig. 5 c.In addition, the quantity of the lockhole 32 does not make spy
Other restriction, it is excellent ventricle can be made to be tightened to optimal geometry state, it is preferred that multiple lockholes 32 are along connector 31
Axially it is uniformly distributed.
It either, as shown in figures 6 a and 6b, include multiple surface bulges 33, two neighboring surface on the connector 31
Protrusion 33, which limits, forms an interior concave space 34, which is used to cooperate with the card hole 25 on locking mechanism 22, in this way
Structure can also realize the locking of tightening system 3 Yu locking mechanism 22.So, according to the direction a in direction shown in arrow in figure
Connector 31 is pulled, interior concave space 34 just can be enabled to be detached from card hole 25, in order to which the second implant 2 is planted to far from or close to first
The direction for entering body 1 is mobile.If pushing the second implant 2 according to the direction b in direction shown in arrow in figure, it can also make card hole 25
Concave space 34 in being detached from.
It include anchor portion 21 and locking mechanism 22 on second implant 2 in the mode shown in Fig. 6 a and Fig. 6 b.Institute
The shape design for stating locking mechanism 22 is adapted with surface bulge 33, it is therefore preferable to there is the structure of certain rigidity, apply compared with
It can be with deformation occurs in the case where big external force.When the second implant 2 is moved along close first implant, 1 direction, the locking
Mechanism 22 can easily cross surface bulge 33.However, it is necessary to which it is opposite with the second implant 2 to readjust the first implant 1
When position, also the second implant 2 can be made to move along the direction far from the first implant 1 by applying biggish power.
It or is that, as shown in fig. 7, the locking mechanism 22 is equipped with card slot 26, which is designed to fishbone, together
Equipped with the boss 35 cooperated with card slot 26, (connector 31 is designed to a fish to Shi Suoshu connector 31 on the whole in the axial direction
Bone, and the first implant 1 of thorn direction on fish-bone), then pass through the cooperation of boss 35 and card slot 26, it also can be simply and easily real
It existing locking mechanism 22 and the locking of tightening system 3 and separates.In this way, if the direction c as illustrated in direction pulls connector
31, boss 35 just can be enabled to be detached from card slot 26, moved in order to the second implant 2 to the direction far from or close to the first implant 1
It is dynamic.If pushing the second implant 2 according to the direction d in direction shown in arrow in figure, card slot 26 can also be made to be detached from boss 35.Together
Reason when needing to readjust the relative position of the first implant 1 and the second implant 2, can also pass through the biggish power of application
Move the second implant 2 along the direction far from the first implant 1.
In another preferred embodiment, as shown in figure 8, multiple elastic components 36, the bullet are arranged on the tightening system 3
Property part 36 protrudes from connector 31, and can be bent along the direction of connector 31 by external force.And the locking mechanism 22
Including groove 27, the groove 27 can accommodate the elastic component 36.The elastic component 36 is preferably along the axial equal of connector 31
Even distribution.
In another preferred embodiment, as shown in figure 9, multiple resilient plungers are arranged on the connector 31.The bullet
Property plunger pass through connector 31 on through-hole setting.The resilient plunger may include two protruding parts 37 of protruding part 37 and connection
Flexible connector 38.When 37 stress of protruding part of the resilient plunger, elastic deformation occurs for the flexible connector 38, so that
Protruding part 37 is all or part of to be retracted in through-hole, and the second implant 2 is moved forward or rearward.The flexible connector
38 are chosen as spring.
However, present pre-ferred embodiments as described above, but be not limited to the above embodiments disclosed range, such as it is described
Locking mechanism 22 is not limited to the mating connection of above-mentioned several ways realization and tightening system 3, and those skilled in the art are in the application
On the basis of file disclosure, it should know how that the mating connection of the two is realized in selection, these are in protection of the invention
Within the scope of.
Technical solution according to an embodiment of the present invention, the first implant and the second implant can in medical device of the invention
The adjustment of relative position is realized by tightening system and locking mechanism, once in surgical procedure, the position of any one implant
It is bad, i.e., using the detachable connection relationship of tightening system and the second implant, readjust the second implant and first
The relative position of implant, and during adjustment, second implant can be along the tightening system to close to or far from institute
The direction for stating the first implant is mobile, in this way, which ventricle can be made to reach preferably tightening effect, and then effectively improves the heart
The validity and stability that the function of room, promotion surgical effect and implant are fixed.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (10)
1. a kind of medical device characterized by comprising
One first implant, for being contacted with the first wall of implantation object；
One second implant, for contacting with the second wall of the implantation object, second implant includes a locking mechanism；
And
One tightening system is connect with first implant, and the tightening system passes through the locking mechanism, the locking mechanism
It is cooperatively connected with the tightening system, second implant can be along the tightening system to close to first implant
Direction is mobile；
When deformation occurs for the locking mechanism and/or the tightening system, second implant can be along the tightening machine
Structure is mobile to the direction far from first implant.
2. medical device as described in claim 1, which is characterized in that the tightening system includes connector and is located at described
Movable buckle on connector.
3. medical device as claimed in claim 2, which is characterized in that the movable buckle is spring-loaded plunger, the spring stack
Plug includes flexible connector and the protruding part positioned at the flexible connector both ends.
4. medical device as claimed in claim 2, which is characterized in that the movable buckle is elastic component, and the elastic component is convex
It can bend for the connector and along the direction of the connector.
5. medical device as claimed in claim 2, which is characterized in that the locking mechanism includes groove, and the groove is used for
Accommodate the movable buckle.
6. medical device as claimed in claim 2, which is characterized in that the movable buckle is uniformly distributed in the connector
On.
7. medical device as described in claim 1, which is characterized in that the locking mechanism is a fastener, the tightening machine
Structure includes an at least groove, and the fastening end of the fastener is located in the groove.
8. medical device as claimed in claim 7, which is characterized in that the fastener further includes pedestal and is movably set in
Force side on the pedestal；When the force side stress, the fastening end is detached from the groove.
9. the medical device as described in claim 1 to 8 any one, which is characterized in that further include a force measuring machine, for surveying
Measure the power that second implant is subject to.
10. medical device as claimed in claim 9, which is characterized in that further include a delivery device, the delivery device is used for
Drive second implant along the tightening system close to or far from first implant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711104777.2A CN109758192A (en) | 2017-11-10 | 2017-11-10 | Medical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711104777.2A CN109758192A (en) | 2017-11-10 | 2017-11-10 | Medical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109758192A true CN109758192A (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711104777.2A Pending CN109758192A (en) | 2017-11-10 | 2017-11-10 | Medical device |
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| Country | Link |
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| CN (1) | CN109758192A (en) |
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| CN115089348A (en) * | 2022-06-24 | 2022-09-23 | 启晨(上海)医疗器械有限公司 | Left ventricle volume reduction delivery system |
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