CN105250033B - Interventional medical device and its conveying cable body, intervention medical device - Google Patents
Interventional medical device and its conveying cable body, intervention medical device Download PDFInfo
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- CN105250033B CN105250033B CN201510685051.7A CN201510685051A CN105250033B CN 105250033 B CN105250033 B CN 105250033B CN 201510685051 A CN201510685051 A CN 201510685051A CN 105250033 B CN105250033 B CN 105250033B
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- stopper section
- screw thread
- bolt head
- end portion
- cable
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- 206010059245 Angiopathy Diseases 0.000 description 1
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- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 208000002330 Congenital Heart Defects Diseases 0.000 description 1
- 206010015856 Extrasystoles Diseases 0.000 description 1
- 206010019280 Heart failures Diseases 0.000 description 1
- 208000020128 Mitral stenosis Diseases 0.000 description 1
- 208000000418 Premature Cardiac Complexes Diseases 0.000 description 1
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- Surgical Instruments (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of insertion types to treat the conveying cable body with intervention medical device, insertion type medical instrument and insertion type medical instrument.Intervention medical device includes the instrument equipped with bolt head and the conveying cable body including cable end portion, and the bolt head is equipped with the first screw thread, and the head of pulling is equipped with for the second screw thread with the first threaded engagement, and the proximal end of the bolt head is equipped with the first stopper section；The distal end in the cable end portion is equipped with the second stopper section；Being detachably connected by first screw thread and the second screw thread between the bolt head and cable end portion, when first stopper section and second stopper section are inconsistent, first screw thread and the second screw thread stop occlusion.It promotes the medical safety of insertion type medical instrument, guarantee normally to discharge insertion type medical instrument.
Description
Technical field
The present invention relates to insertion type medical instruments fields, more particularly to a kind of intervention being placed at human body selected position
The interventional medical device, is delivered to the conveying cable body of the selected position by medical instrument, and including the interventional medical device and
Convey the intervention medical device of cable body.
Background technique
Interventional therapy refers under the guidance of certain medical imaging device, conveys material, medical instrument and medicine by conduit
Object does not operate on mode and completes a kind of means to disease treatment to therapentic part is this.Interventional therapy has become and tradition at present
Internal medicine treatment, one of surgical operation therapy three big Modern medical therapy means mutually arranged side by side.Heart and vascular disorder are
The most widely used field of interventional therapy.
Compared with traditional internal medicine treatment, interventional therapy has reached the inaccessiable clinical effect of previous drug therapy institute
Fruit has the trend for replacing surgical operation in certain situations.For example, radiofrequency ablation therapy paroxysmal supraventricular tachycardia, room
It quivers, auricular flutter, various premature beats, ventricular tachycardia；Block that equipment treatment congenital heart disease arterial duct is not busy, II hole central type room
Every defect, the diseases such as balloon angioplasty mitral stenosis and pulmonary stenosis, Stent Implantation coronary heart disease and various blood
Manage narrow etc., pacemaker treats bradycardia, prevention sudden death, treatment heart failure etc., some diseases fully achieve the effect of radical cure
Fruit.Aforementioned diseases no longer use merely traditional drug and surgical operation therapy.Compared with surgical operation, interventional therapy is had
Some outstanding advantages are as follows: (1) wound is small, painful few.Due to not operating on, operation is only completed by the conduit of 2~3 millimeters of thicknesses,
Therefore wound very little.(2) restore fast.Small just because of wound, so patient's post-operative recovery is quickly, usual cardiovascular disease intervention is controlled
Postoperative 24 hours of the patient for the treatment of can out-of-bed activity, daily life is fully able to take care of oneself.(3) good effect, safety.Since intervention is controlled
Treatment is not operated on, and does not have to general anesthesia, not the processes such as healing of wound, therefore is avoided in surgical operation, is commonly encountered after operation
Many complication, safety greatly improves.(4) meet modern and require beautiful hope.Since operation is not operated on, after treatment
Wound scar is not left, therefore can't see at all in appearance in PTCA or and STENTS.This put be especially suitable for children, women and externally
It sees, the industry practitioner that appearance is more demanding.
As it can be seen that it is more and more extensive using the suitable application area that percutaneous interventional technique carries out disease treatment, generally use conduit Jie
The treatment method entered can place heart, the artery and vein vascular of various materials, instrument and drug to human body.For example, can
To be treated by insertion type by valve reparation instrument, heart defect amplatzer, vascular plug, vascular filter etc. is placed into selected location
Place.And insertion type medical instrument is realized by using thread mechanism in common insertion type treatment and conveys the company between cable body
Connect, but this mode of the prior art in actual clinical in use, but there is following technical problem:
Connection tension in insertion type surgical procedure between medical instrument and conveying cable body end portion, it is difficult to normal release, into
And extends operating time, increase medical danger coefficient, improve the risk of insertion type treatment；In addition, in insertion type surgical procedure
There is thread failure in the threaded connection between medical instrument and conveying cable body end portion, cause insertion type medical instrument can not be just
It is really installed in place, equally also extends operating time, increase medical danger coefficient, improve the risk of insertion type treatment.
Summary of the invention
Based on this, it is necessary to for the connectivity problem between medical instrument in the prior art and conveying cable body end portion, provide
A kind of insertion type treatment intervention medical device, insertion type medical instrument and insertion type medical instrument convey cable body.
The present invention provides a kind of intervention medical devices comprising the instrument equipped with bolt head and the conveying including cable end portion
Cable body, the bolt head are equipped with the first screw thread, and the head of pulling is equipped with for the second screw thread with the first threaded engagement, the bolt
The proximal end on head is equipped with the first stopper section；The distal end in the cable end portion is equipped with the second stopper section；The bolt head and cable end portion it
Between being detachably connected by first screw thread and the second screw thread, when first stopper section and second stopper section offset
When touching, first screw thread and the second screw thread stop occlusion.
Being detachably connected by first screw thread and the second screw thread between the bolt head and cable end portion, when the bolt
When the second stopper section on first stopper section on head and the cable end portion is inconsistent, first screw thread and the second screw thread stop
Occlusion.
The bolt head is provided with the proximal face through bolt head and the bolt of distal end end face in one of the embodiments,
Head inner hole, setting internal screw thread is as first screw thread on the inner wall of the bolt head proximal end；The outer surface in the cable end portion is set
External screw thread is set as second screw thread.
First stopper section is the protrusion for protruding the proximal face of the bolt head, institute in one of the embodiments,
Stating the second stopper section is the protrusion for protruding the distal end end face in the cable end portion.
First stopper section is set to the proximal face or proximal lateral of the bolt head in one of the embodiments,
On wall, second stopper section is set on distal end end face or the distal exterior wall in the cable end portion.
First stopper section and/or second stopper section have wedge angle, the wedge angle in one of the embodiments,
Angle is threaded into when angle is engaged less than first screw thread and the second screw thread.
First stopper section protrudes from the effective length of the proximal face of the bolt head in one of the embodiments,
The sum of the effective length of cable end portion distal end end face is protruded from second stopper section, is less than or equal to second screw thread
Threadingly effective length of axis direction when threadingly cooperating on the total length of axis direction and the second screw thread with the first threaded engagement
The difference of degree.
There is in both first stopper section and second stopper section smaller effective length in one of the embodiments,
The effective length of degree person is greater than or equal to first thread pitch.
Backstop one of in both first stopper section and second stopper section in one of the embodiments,
Portion is the protrusion being arranged in the proximal face of the bolt head or the distal end end face in cable end portion, and another stopper section in the two is
A stop wall caused by the step that second screw thread or first screw thread are extended to screw tip, the protrusion with
The stop wall is used cooperatively, and when the protrusion is inconsistent with the stop wall, first screw thread and the second screw thread stop
Occlusion.
In one of the embodiments, the quantity of first stopper section and second stopper section quantity be it is multiple and
Identical, multiple first stopper sections and multiple second stopper sections are uniformly distributed on the circumferencial direction in bolt head and cable end portion respectively.
First stopper section and second stopper section are respectively provided with a vertical wall in one of the embodiments, when
When the second stopper section in first stopper section of the bolt head and the cable end portion is inconsistent, first stopper section and described
The vertical wall of second stopper section is in contact.
The present invention also provides a kind of insertion type medical instruments comprising the bolt head positioned at its proximal end, the bolt head
Equipped with screw thread, which is characterized in that the bolt head is equipped with the first stopper section, and first stopper section is the protrusion bolt head
The protrusion of proximal face.The bolt head is provided with the bolt head of the proximal face through bolt head in one of the embodiments,
Inner hole, the screw thread are located on the inner wall of the bolt head proximal end.
The screw thread of the bolt head is the stud being arranged in the bolt head proximal face in one of the embodiments,
On external screw thread, proximal face of the proximal end of the protrusion externally threaded proximal end close to the bolt head.
The present invention also provides a kind of conveying cable bodies of insertion type medical instrument comprising set it is threaded pull head,
It is characterized in that, equipped with the second stopper section, second stopper section is the distal end end face for protruding the cable end portion on the head of pulling
Protrusion.
The screw thread is located at the inner wall of the distal end in the cable end portion in one of the embodiments,.
Have on the distal end end face in the cable end portion with externally threaded stud, the protrusion in one of the embodiments,
Distal end end face of the distal end externally threaded distal end close to the cable end portion.
The present invention compared with the prior art, has the advantage that the first stopper section when the bolt head and the cable end
When the second stopper section in portion is inconsistent, first screw thread and the second screw thread stop occlusion, on the one hand, bolt can be effectively prevented
It is engaged tension between head and cable end portion, and then guarantees the normal release of instrument in surgical procedure；On the other hand, first can be protected
The thread of screw thread and the second screw thread will not damage inactivation, that is, protect thread not generate stripped thread phenomenon.So as to effectively inhibit
Hidden danger brought by conventional threads mechanism between medical instrument and conveying cable body end portion, guarantees the normal release of medical instrument,
Reduce medical-risk.
Detailed description of the invention
Fig. 1 is display effect schematic diagram in one embodiment of the invention；
Fig. 2 is the present invention intervenes medical device in one embodiment knot between medical instrument and conveying cable body end portion
Structure schematic diagram；
Fig. 3 a is the structural schematic diagram of bolt head in Fig. 2；
Fig. 3 b is the structural schematic diagram in cable end portion in Fig. 2；
Fig. 4 is the present invention intervenes medical device in one embodiment structure between plugging device and conveying cable body end portion
Schematic diagram；
Fig. 5 a is that the present invention intervenes medical device between medical instrument and conveying cable body end portion in one embodiment
Structural schematic diagram；
Fig. 5 b is the structural schematic diagram of bolt head in Fig. 5 a；
Fig. 5 c is the structural schematic diagram in cable end portion in Fig. 5 a；
Fig. 6 a is that the present invention intervenes medical device between medical instrument and conveying cable body end portion in one embodiment
Structural schematic diagram；
Fig. 6 b is the structural schematic diagram of bolt head in Fig. 6 a；
Fig. 6 c is the structural schematic diagram in cable end portion in Fig. 6 a；
Fig. 7 a is that the present invention intervenes medical device between medical instrument and conveying cable body end portion in one embodiment
Structural schematic diagram；
Fig. 7 b is the structural schematic diagram of bolt head in Fig. 7 a；
Fig. 8 is that the present invention intervenes bolt in medical device between medical instrument and conveying cable body end portion in one embodiment
The structural schematic diagram on head；
Fig. 9 is the present invention intervenes medical device in one embodiment knot between medical instrument and conveying cable body end portion
Structure schematic diagram；
Figure 10 is that the present invention intervenes medical device between medical instrument and conveying cable body end portion in one embodiment
Structural schematic diagram；
Figure 11 present invention intervenes the knot of medical device in one embodiment between medical instrument and conveying cable body end portion
Structure schematic diagram.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.In intervention field, usually the close one end of opposite operator is known as
Proximal end, opposite remote one end of operator are known as distal end.
It should also be noted that, the insertion type medical instrument in present embodiment include medical instrument main part and with it is described
The connected bolt head of medical instrument main part.The medical instrument main part is insertion type medical instrument for realizing medical functions
Part, bolt head is that insertion type medical instrument is used for and the part that connect of conveying cable body.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Implementation of the invention is used for insertion type Medical Devices, as shown in Figure 1, this Medical Devices includes at least intervention
Formula medical device 10.Insertion type medical device 10 includes insertion type medical instrument 110, for transferring insertion type medical instrument 110
Conveying cable body 200.Connection is placed on conduit between usual insertion type medical instrument 110 and the distal end 210 for conveying cable body 200
In 201, the migration in the Tissue cavities 101 of patient discharges insertion type doctor by conveying cable body 200 after being located at selected location
Instrument 110 is treated, and insertion type medical instrument 110 is placed into selected location and implements insertion type treatment.Tissue cavities 101 can be
The cavity that tissue wall 102 is constituted, for example, Tissue cavities 101 include lumen of vessels, enteric cavity, heart chamber, certain Tissue cavities
101 can also include that current insertion type treats each organization internal chamber in the tissue that can be reached, and the following intervention
Any one organization internal chamber in the tissue that formula treatment can reach.Insertion type medical instrument 110 referred to herein
It may include the medical instrument of any one insertion type treatment, for example, heart defect amplatzer, valve reparation instrument, blood vessel
Plug, vascular filter etc. medical instrument.The slender body, such as wirerope, conduit etc. that cable body 200 is insertion type treatment are conveyed,
Its distal end with insertion type medical instrument 110 for being connected.Here distal end refers to one end farthest apart from operator in Fig. 1, and
Opposite proximal end refers to that distance operates nearest one end.
Certainly, it can clearly understand whether insertion type medical instrument 110 has been shifted into choosing for the ease of medical staff
Positioning is set, then above-mentioned Medical Devices can also include: photographic device, display etc..Photographic device is placed in conduit 201, is followed
The video data of the distal end shooting Tissue cavities 101 of conduit 201, then in the video data transmission to display, at interface 103
The upper corresponding image of display, so that being supplied to medical staff's insertion type treats accurate location data.
In order to avoid being situated between caused by because of the connectivity problem between insertion type medical instrument 110 and conveying cable body 200
Enter formula medical instrument 110 to be difficult to be discharged into correct selected location, increase the problems such as medical danger coefficient, the embodiment of the present invention
In, insertion type medical device 10 is improved.Specific improvement see below described in conjunction with attached drawing.
Embodiment one provides a kind of insertion type treatment intervention medical device 10.
Also referring to Fig. 1, Fig. 2, Fig. 3 a and Fig. 3 b, the intervention medical device 10 include insertion type medical instrument 110 and
Convey cable body 200.Instrument 110 includes the bolt head 120 on insertion type medical instrument 110.Conveying cable body 200 includes being located at
Convey the cable end portion 220 on cable body 200.Conveying cable body 200 is for transferring insertion type medical instrument 110 to selected location, and cable
Head 220 is arranged on the distal end 210 of conveying cable body 200.Bolt head 120 includes the first screw thread 122 and the first stopper section 121a；
Cable end portion 220 includes the second screw thread 222 and the second stopper section 221a that can be cooperatively connected with the first screw thread 122；Bolt head 120 with
Being detachably connected by the first screw thread 122 and the second screw thread 222 between cable end portion 220.When the first stopper section of bolt head 120
When the second stopper section 221a on 121a and cable end portion 220 is inconsistent, the first screw thread 122 and the second screw thread 222 stop occlusion, from
And the continuation of the first screw thread 122 and the second screw thread 222 is just prevented before 222 excessive screwing of the first screw thread 122 and the second screw thread
Occlusion, on the one hand, can enable not stressing between the end face 123 of bolt head 120 and the end face 223 in cable end portion 220 and be bonded or with one
Fixed spacing also would not be that is, so that not generating pressure between the end face 123 of bolt head 120 and the end face 223 in cable end portion 220
Frictional force is generated between 120 end face 123 of bolt head and the end face 223 in cable end portion 220, and then guarantees bolt head in surgical procedure
It can normally be discharged between 120 and cable end portion 220；On the other hand, it can avoid the spiral shell when the first screw thread 122 and the second screw thread 222
Damage inactivation (i.e. stripped thread) problem of thread caused by tooth pressure when screwing is excessive.
In embodiment one shown in Fig. 2, in the proximal face 123 of bolt head 120 and the distal end end face 223 in cable end portion 222
On respectively correspond setting square structure protrusion, to form the first stopper section 121a and the second stopper section 221a.That is, in bolt head
First stopper section 121a is set in the proximal face 123 in portion 120, second backstop is set on the distal end end face 223 in cable end portion 222
Portion 221a.As shown in Fig. 2, Fig. 3 a and Fig. 3 b, the first stopper section 121a and the second stopper section 221a are raised in bolt head 120 respectively
Proximal face 123 and cable end portion 222 distal end end face 223 surface, and the two is correspondingly arranged.By bolt head in the present embodiment
Portion and the first stopper section are integrally formed, and cable end portion and the second stopper section are integrally formed, to reduce cost of manufacture, make insertion type
The surface of medical instrument is more smooth, avoids sharply protruding foreign matter and rejects caused by tissue reflection.Certainly, bolt head and first
The connection type between connection type or cable end portion and the second stopper section between stopper section can also using laser welding or
The mode of resistance pressure-welding is realized.
Although being appreciated that in embodiment one, it is arranged in the proximal face of bolt head or the distal end end face in cable end portion
Protrusion is using the protrusion of the square structure in Fig. 2, and still, raised structure can also be triangular structure, cylindrical knot
Structure, conical structure etc. are set as needed.
Bolt head 120 is provided with the proximal face through bolt head and the bolt head inner hole 124 of distal end end face.The present invention its
In his embodiment, which can only penetrate through proximal face.The proximal end of the main part of insertion type medical instrument 110 connects
Yu Shuantou inner hole 124.Preferably, in the present embodiment, the internal screw thread being arranged on the inner wall of 120 proximal end of bolt head is as the first screw thread
122；It conveys and cable end portion 220 is set on the distal end 210 of cable body 200, the stud outer surface on 220 distal end end face 223 of cable end portion is set
The external screw thread set is as the second screw thread 222.Here the first screw thread 122 can be the position of the part on 120 inner wall of bolt head
It sets.It is understood that the external screw thread that the stud outer surface on 220 distal end end face 223 of cable end portion is arranged is as the second screw thread 222
When, the distal end of the second stopper section 221a compared with the second screw thread 222 distal end close to cable end portion 220 distal end end face 223.It is understood that
, above-mentioned first screw thread 122 and the second screw thread 222 are that corresponding matching uses, and can also respectively correspond and be set as external screw thread
And internal screw thread, equally, when the set-up mode of screw thread changes, the structure in bolt head and cable end portion is also corresponding changes.It is understood that
It is that, when the first screw thread is the external screw thread on the stud that bolt head proximal face is arranged in, the proximal end of the first stopper section need to be compared with
The proximal end of one screw thread is close to 120 proximal face of bolt head.
Bolt head 120 shown in Fig. 2 successively includes big cylindrical portion 131 and rotary table portion 132 from distal end to proximal end.Rotary table portion
132 successively reduce from distal end to proximal outer diameter.The proximal face in rotary table portion 132 is above-mentioned proximal face 123.It is understood that
It is that bolt head and cable end portion can also be the structural body of other shapes, such as cross section is rectangular structural body etc..It can manage
It solves, based on the above embodiment one structure, in a variant embodiment of the invention, the proximal end and cable of bolt head
The distal end on head is all made of cylindrical structure, and outer diameter is identical, to guarantee between insertion type Medical Instruments and conveying cable body
It is smoothly connected.
One structure based on the above embodiment, in a variant embodiment of the invention, in order to guarantee more efficiently
Limitation screw thread continues deeper into rotation, and the sum of the effective length of the first stopper section 121a and the second stopper section 221a are less than or wait
In the second screw thread 222 threadingly the total length of axis direction be engaged on the second screw thread 222 with the first screw thread 122 cooperation when along spiral shell
The difference of the minimum effective length of line axis direction.Wherein, as shown in Figure 3a, the effective length of the first stopper section 121a refers to first
Vertical range L1 between the proximal face of stopper section 121a and the proximal face 123 of bolt head 120；As shown in Figure 3b, second
The effective length of stopper section 221a refers between the distal end end face of the second stopper section 221a and the distal end end face 223 in cable end portion 220
Vertical range L2；The total length L as depicted on figure 3b of second screw thread 222 threadingly axis direction, is the second screw thread 222
Distal end end face to cable end portion 220 distal end end face 223 vertical range；Referring to shown in Fig. 3 a, Fig. 3 b, on the second screw thread 222 with
The minimum effective length b of threadingly axis direction, refers to mutually matched first screw thread when the occlusion cooperation of the first screw thread 122
122 (i.e. the internal screw threads of bolt head 120) and the second screw thread 222 (i.e. the external screw thread in cable end portion 220), threadingly axis direction screws
The length that is engaged together, in the case where this is engaged length, bolt head is closely joined together just with cable end portion.Cause
This, as (L1+L2)≤(L-b), significantly more efficient can limit screw thread continues deeper into rotation.It is understood that first
The effective length of stopper section 121a and the second stopper section 221a can also be applicable in the relativeness of the first screw thread and the second screw thread
In other embodiments.
Certainly, while rotating for the first stopper section 121a of guarantee bolt head and the second stopper section 221a in cable end portion
The distal end end face 123 of bolt head 120 and the distal end end face 223 in cable end portion 220, in the above-described embodiments, the first backstop are not contacted
Effective length in both portion 121a and the second stopper section 221a with smaller effective length person is greater than or equal to the first screw thread 122
Or second screw thread 222 pitch P.Since the first screw thread 122 and the second screw thread 222 are matching thread, the two pitch P one
It causes.That is, L1 is more than or equal to P when L1 is less than or equal to L2；When L1 is greater than L2, L2 is more than or equal to P.It can
With understanding, the relativeness of the first stopper section 121a and the second stopper section 221a and the first screw thread 122 and the second screw thread 222
It can be applicable in other embodiments.
Referring to Figure 4 together, insertion type medical instrument 110 is heart defect amplatzer, armful includes for blocking heart
The medical instrument main part 301 of defect and the bolt head 302 that main part 301 is connected with conveying cable body 200.
Insertion type medical instrument 110 passes through the conveying cable where the cable end portion 200 with the second screw thread and the second stopper section
Insertion type medical instrument 110 is fed through selected location by 200 distal end of body.If bolt head and cable end portion are lacking the first stopper section
In the case where the second stopper section, the end in the thread contact surface of internal and external threads and bolt head and cable end portion when it is screwed
Contact interface can generate pressure, and pressure causes the frictional force of contact interface to increase, so influence surgical procedure in instrument it is normal
Release increases operation risk coefficient to need to extend operating time.Meanwhile if bolt head and cable end portion are lacking first
In the case where stopper section and the second stopper section, the excessive thread that also results in of pressure when the thread of internal and external threads is in excessive screwing
Damage inactivation, i.e. stripped thread.And in the embodiment of the present invention, bolt head and cable end portion end respectively added with the first stopper section and
Second stopper section is used to limit the rotation of screw thread, so as to avoid the generation of the above problem.
It hereinafter will be explained in detail the knot of remaining structure member in addition to the set-up mode of the first screw thread and the second screw thread
Structure set-up mode and interconnected relationship, for the elaboration for avoiding excessive duplicate contents, each embodiment is based primarily upon Fig. 2 institute below
Show bolt head and the cable end portion of structure, certainly, remaining structure member in addition to the set-up mode of the first screw thread and the second screw thread
Equally applicable first screw thread of deformation behaviour and the second screw thread be respectively in specific embodiment that outer internal screw thread exchanges.
Embodiment two, referring to Fig. 5 a, Fig. 5 b and Fig. 5 c, intervention medical device 10b provided in this embodiment and intervention medical treatment
Device 10 is substantially the same, the difference is that, the shape and setting position of the first stopper section 121b and the second stopper section 221b
Different from the shape of the first stopper section 121a and the second stopper section 221a and setting position, and, the structure of bolt head 120b is not
With the structure of bolt head 120.Specifically, on the proximal lateral wall 125b of bolt head 120b and the distal exterior of cable end portion 220b
The distal end end face 223b that setting protrudes from the proximal face 123b and cable end portion 220b of bolt head 120b is respectively corresponded on wall 224b
Protrusion, to form the first stopper section 121b and the second stopper section 221b.First stopper section 121b and in present embodiment
Two stopper section 221b can be integrally formed with bolt head 120b and cable end portion 222b respectively.It can be understood that can also be using sharp
First stopper section 121b and the second stopper section 221b are separately fixed at bolt head 120b and cable by the mode of photocoagulation or resistance pressure-welding
On the 222b of head.Certainly, in the present embodiment, can to avoid the first stopper section 121b and the second stopper section 221b respectively with cable end portion
On distal end end face 223b and bolt head on proximal face 123b be in contact, prevent insertion type medical instrument and conveying cable body
Between end face occur pressure effect, extend insertion type medical instrument service life.
In addition, bolt head 120b successively includes big cylindrical portion 126b, rotary table portion 127b and small column portion from distal end to proximal end
128b, and the outer diameter of small column portion 128b is identical as the outer diameter of cable end portion 220b, to guarantee insertion type Medical Instruments and conveying cable
It is smoothly connected between body.
In above-described embodiment two, the protrusion being arranged on the end face lateral wall in bolt head or cable end portion be can be using figure
The protrusion of pointed shape structure in 5a.Certainly the protrusion being arranged on the end face lateral wall in bolt head or cable end portion can also use
Other shapes, such as square structure, cylindrical structure etc..
In the embodiment two as shown in Fig. 5 a, Fig. 5 b and Fig. 5 c, the first stopper section 121b and the second stopper section 221b have
Wedge angle is threaded into angle when wedge angle angle is engaged less than the first screw thread 122b and the second screw thread 222b.It is mentioned herein
The angle that is threaded into be exactly the helical for conveying the second screw thread 222b of cable body 200 and the second screw thread 222b perpendicular to its axis
The angle of cross section.In the present embodiment so that the wedge angle angle of the first stopper section and/or the second stopper section less than the first screw thread and
It is threaded into angle when second screw thread is engaged, is that the first stopper section and the second stopper section generate axial face in order to prevent
It contacts and axial compressive force is caused to form frictional resistance, avoid frictional resistance and medical instrument is caused not discharge normally.Certainly, it is
Reach this purpose, and to the wedge angle angle initialization of the first stopper section and/or the second stopper section " less than the first screw thread and
Be threaded into angle when two screw threads are engaged " condition, may be equally applicable in other embodiments.
In addition, the first stopper section 121b and second stops in order to guarantee that significantly more efficient limitation screw thread continues deeper into rotation
The sum of the effective length of stopper 221b, less than or equal to the second screw thread 222b threadingly the total length of axis direction, with the second spiral shell
The difference of the threadingly minimum effective length of axis direction on line 222b and when the first screw thread 122b is engaged cooperation.It is specific to understand and join
See above embodiment one.
Further for example, being the first stopper section 121b of guarantee bolt head and the second stopper section 221b in cable end portion in the same of rotation
When do not contact the distal end end face 123b of bolt head and the distal end end face 223b in cable end portion, in the above-described embodiments, the first stopper section
There is 121b and the second stopper section 221b the effective length of smaller effective length person to be greater than or equal to the first screw thread between the two
The pitch P of 122b or the second screw thread 222b.It is specific to understand the description that can be found in embodiment one above.
Embodiment three, referring to Fig. 6 a, Fig. 6 b and Fig. 6 c, unlike embodiment one and its variant embodiment, Fig. 6 a, figure
In the embodiment for intervening medical device 10c shown in 6b and Fig. 6 c, proximal face 123c and cable end portion in bolt head 120c
The first stopper section 121c and the second stopper section 221c, the first stopper section 121c and are correspondingly arranged on the distal end end face 223c of 220c
Two stopper section 221c have wedge angle, screw thread rotation when wedge angle angle is engaged less than the first screw thread 122c and the second screw thread 222c
Into angle.The second screw thread 222c, the distal end end face of cable end portion 220c are opened up on cable end portion 220c lateral wall as shown in Figure 6 b
The angular protrusion of setting tool is used as the second stopper section 221c on 223c, and the wedge angle angle 9 of the protrusion is less than the first screw thread 122c
Angle is threaded into when being engaged with the second screw thread 222c.As fig. 6 c, it is opened up on the inner sidewall of the proximal end bolt head 120c
The angular protrusion of setting tool is used as the first stopper section 121c on the distal end end face 123c of first screw thread 122c, bolt head 120c,
Angle is threaded into when the wedge angle angle 11 of the protrusion is engaged less than the first screw thread and the second screw thread.Present embodiment mentions
To the definition for being threaded into angle it is identical as the definition for being threaded into angle in above embodiment.
First stopper section 121c and the second stopper section 221c, which cooperates, prevents the first screw thread and the second screw thread excessive occlusal
When, it can be simultaneously using the angular bulge-structure of tool as shown in Fig. 6 b and Fig. 6 c, and wedge angle angle meets condition at this time: point
Angle is threaded into when angle angle is engaged less than the first screw thread and the second screw thread.In the present embodiment, so that the first backstop
It is threaded into angle when the wedge angle angle of portion and/or the second stopper section is engaged less than the first screw thread and the second screw thread, is
The first stopper section and the second stopper section generate axial face contact and axial compressive force are caused to form frictional resistance in order to prevent, avoid
Frictional resistance and cause medical instrument not discharge normally.Certainly, in order to reach this purpose, and to the first stopper section and/or
" being threaded into angle when being engaged less than the first screw thread and the second screw thread " of the wedge angle angle initialization of second stopper section
Condition may be equally applicable for other embodiments and related variation embodiment.
It is above-mentioned be arranged on the proximal end of bolt head and the distal end in cable end portion to form the first stopper section and the second backstop
The structure in portion can use identical structure, can also use different structures.
When the first stopper section and the second stopper section use identical structure, such as the first stopper section 121 and second is stopped in Fig. 2
Stopper 221 is all made of the protrusion of square structure, in another example the first stopper section 121b and the second stopper section 221b are all made of in Fig. 5 a
The protrusion of pointed shape structure.Further for example, the first stopper section 121c and the second stopper section 221c are also all made of pointed shape knot in Fig. 6 a
The protrusion of structure.That is, no matter the first stopper section and the second stopper section are the proximal face and cable for being separately positioned on bolt head
It on the distal end end face on head, is still separately positioned in the proximal, side wall of bolt head and the distal end side wall surface in cable end portion, first stops
Stopper and the second stopper section can use identical planform.
Certainly, the first stopper section and the second stopper section can also use different structure, for example, such as Fig. 7 a and Fig. 7 b institute
The example IV of offer.
Example IV shown in referring to figs. 7a and 7b, intervention medical device 10d are located at the bolt on insertion type medical instrument
Head 120d includes that the first screw thread and the first stopper section 121d, structure and connection relationship are the same as example 1.Positioned at conveying
Cable end portion 220d on cable body includes the second screw thread 222d that can be threadedly engaged connection with first and the second stopper section.In bolt head
It is arranged on the proximal face 123d of 120d and convexes to form the first stopper section 121d, and the second screw thread on the distal end of cable end portion 220d
A stop wall 226d is as the second stopper section caused by being extended at the step of screw tip.As the first stopper section 121d and only
When shelves wall 226d is inconsistent, the first screw thread and the second screw thread 222d stop occlusion.The work of the stop wall used in the present embodiment
With the second stopper section of various shapes being equal in Fig. 2, Fig. 5 a, there can be protrusion to avoid conveying cable body distal end, simplify knot
Structure improves Mechanical Reliability.
Similarly, the variant embodiment of example IV can be, as shown in figure 8, by protrusion and stop wall in example IV
It is inverted.Specifically: bolt head 120e includes the first screw thread 122e and the first stopper section for being made of stop wall 135e, and is located at defeated
The second stopper section for sending cable body is accordingly then protrusion.The first screw thread 122e is extended to screw thread end on the proximal end of bolt head 120e
A stop wall 135e is as the first stopper section caused by the step at end.When the second stopper section and stop wall 135e are inconsistent
When, the first screw thread and the second screw thread stop occlusion.And in the present embodiment, the protrusion that is arranged on the distal end end face in cable end portion can be with
It is that the protrusion etc. of Fig. 5 a pointed shape structure can also be used using the protrusion of the square structure in Fig. 2.
As it can be seen that in example IV and its variant embodiment, in both the first stopper section and the second stopper section wherein it
One stopper section is the protrusion being arranged in the proximal face of bolt head or the distal end end face in cable end portion, and the first stopper section and second is stopped
Another stopper section in stopper the two be at the step that the second screw thread or the first screw thread are extended to screw tip caused by one
Stop wall, protrusion are used cooperatively with stop wall, and when protrusion is inconsistent with stop wall, the first screw thread and the stopping of the second screw thread are stung
It closes.In the present embodiment, the protrusion for being used to form the first stopper section or the second stopper section can be angular using the tool in Fig. 6 b
Protrusion prevents the first screw thread and the second screw thread excessive occlusal to cooperate with stop wall 135e shown in Fig. 8；Or it can be with
Cooperated using the angular bulge-structure of tool in Fig. 6 c with stop wall 135d shown in Fig. 7 b, prevents the first screw thread and second
Screw thread is excessively stung.Under both modes, have in angular protrusion, no matter the protrusion is used as the first stopper section or the second backstop
Portion, then wedge angle angle can " wedge angle angle be less than the first screw thread and second by meeting condition shown in above-described embodiment three
Angle is threaded into when screw thread is engaged ", preventing the first stopper section and the second stopper section from generating axial face contact
Cause axial compressive force to form frictional resistance, avoids frictional resistance and medical instrument is caused not discharge normally.
Based on Fig. 7 a and Fig. 7 b, embodiment shown in Fig. 8, in another embodiment of the invention, above-mentioned stop wall
(226d, 135e) is formed in cutted thread.Be it is easy to process, retain cutted thread when helicoid form step, pass through
Step is formed in the stop wall formed on the proximal end of above-mentioned bolt head or the distal end in cable end portion.In addition, stop wall 135e and stop
Wall 226d can be vertical wall, to disperse stress when corresponding stopper section contact.
One into example IV based on the above embodiment, and the first stopper section and the second stopper section can have a vertical wall,
When the second stopper section in the first stopper section of bolt head and cable end portion is inconsistent, the first stopper section and the second stopper section are hung down
Straight wall is in contact, to guarantee that contact surface uniform force can be made when the first stopper section and the second stopper section contact with each other.Therefore, example
Such as, Fig. 5 a, Fig. 5 b, Fig. 5 c, Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 7 a, in embodiment shown in Fig. 7 b, the first stopper section or the second backstop
It portion can be using triangular structure of right angle, ladder structure of right angle etc..
Certainly, above-mentioned first stopper section and the second stopper section quantity can be correspondingly arranged, quantity be it is multiple, multiple first stop
Stopper and multiple second stopper sections are uniformly distributed on the circumferencial direction in bolt head and cable end portion respectively.
Embodiment five as shown in Figure 9 the difference is that, intervenes the bolt head of medical device 10f with embodiment one
120f includes multiple first stopper section 121f.Cable end portion 220f on conveying cable body 200f includes multiple second stopper sections
221f.Multiple first stopper section 121f are along the circumferential direction uniformly arranged on the proximal face 123f of bolt head 120f, Duo Ge
Two stopper section 221f are along the circumferential direction uniformly arranged on the distal end end face 223f of cable end portion 220f, the number of the first stopper section 121e
It measures identical with the quantity of the second stopper section 221e.First stopper section 121f and the second stopper section 221f can also use identical knot
Structure.Certainly, the scheme that multiple first stopper sections and the second stopper section are arranged in the present embodiment can be applicable to above-described embodiment
One into example IV and related variation embodiment.
For example, embodiment six as shown in Figure 10 and embodiment two the difference is that, intervention medical device 10m's
It is along the circumferential direction evenly arranged on the proximal lateral wall 125m of bolt head 120m and multiple convexes to form multiple first stopper sections
121m is along the circumferential direction evenly arranged on the distal exterior wall 224m of cable end portion 220m and multiple convex to form multiple second and stop
Stopper 221m.The quantity of first stopper section 121m is identical with the quantity of the second stopper section 221m.First stopper section 121m and second
Stopper section 221m can also use identical structure.Remaining structure is identical as above-described embodiment two and its variant embodiment.
Fig. 9 is into embodiment shown in Fig. 10, by increasing the number of the first stopper section and the second stopper section, while first
Stopper section and the second stopper section quantity are equal, and are evenly distributed on circumferencial direction.When screw thread rotation, barrier force is just divided in this way
Solution significantly reduces barrier force to the mechanical damage of block piece, can protect individual block piece failures on each block piece
Demonstrate,prove the reliability of entire mechanism.The mechanical strength for not only increasing blocking mechanism also improves the reliability of blocking mechanism.
Further for example, embodiment seven as shown in figure 11 and example IV the difference is that, intervention medical device 10n's
Bolt head 120n includes multiple the first stopper sections being along the circumferential direction uniformly arranged on the proximal face 123n of bolt head 120n
121n.Correspondingly, stop wall 226n is correspondingly arranged on cable end portion 220m.It is understood that stop wall 226n can be one, it can also
It is multiple, or identical as the number of the first stopper section 121n.
The present invention compared with the prior art, has the advantage that the first stopper section when the bolt head and the cable end
When the second stopper section in portion is inconsistent, first screw thread and the second screw thread stop occlusion, on the one hand, bolt can be effectively prevented
It is engaged tension between head and cable end portion, and then guarantees the normal release of instrument in surgical procedure；On the other hand, first can be protected
The thread of screw thread and the second screw thread will not damage inactivation, that is, protect thread not generate stripped thread phenomenon.So as to effectively inhibit
Hidden danger brought by conventional threads mechanism between medical instrument and conveying cable body end portion, guarantees the normal release of medical instrument,
Reduce medical-risk.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of intervention medical device, the conveying cable body including being equipped with the instrument of bolt head and including cable end portion, the conveying cable
Body is elongate article, and the bolt head is equipped with the first screw thread, and the cable end portion is equipped with for the second spiral shell with the first threaded engagement
Line, which is characterized in that the proximal end of the bolt head is equipped with the first stopper section；
The distal end in the cable end portion is equipped with the second stopper section；Pass through first screw thread and the between the bolt head and cable end portion
Two screw threads are detachably connected, when first stopper section and second stopper section are inconsistent, first screw thread and second
Screw thread stops occlusion；
First stopper section is the protrusion for protruding the proximal face of the bolt head, and second stopper section is to protrude the cable
The protrusion of the distal end end face on head.
2. intervention medical device according to claim 1, which is characterized in that the bolt head is provided with through bolt head
The bolt head inner hole of proximal face, first screw thread are located on the inner wall of the bolt head proximal end；Second screw thread is located at institute
On the outer surface for stating cable end portion.
3. intervention medical device according to claim 1, which is characterized in that first stopper section is set to the bolt head
Proximal face perhaps second stopper section is set to distal end end face or the distal exterior in the cable end portion on proximal lateral wall
On wall.
4. intervention medical device according to claim 1, which is characterized in that first stopper section and/or described second
Stopper section has wedge angle, is threaded into angle when the wedge angle angle is engaged less than first screw thread and the second screw thread
Degree.
5. intervention medical device according to claim 1, which is characterized in that first stopper section protrudes from the bolt head
The effective length of the proximal face in portion and second stopper section protrude from the sum of the effective length of cable end portion distal end end face,
When less than or equal to cooperating on second the screw thread threadingly total length of axis direction and the second screw thread with the first threaded engagement
The threadingly difference of the minimum effective length of axis direction.
6. intervention medical device according to claim 1, which is characterized in that first stopper section and second backstop
Effective length in portion's the two with smaller effective length person is greater than or equal to first thread pitch.
7. intervention medical device according to claim 1, which is characterized in that first stopper section and second backstop
Stopper section is convex to be arranged in the proximal face of the bolt head or the distal end end face in cable end portion one of in portion's the two
It rises, another stopper section in the two is is produced at the step that second screw thread or first screw thread are extended to screw tip
A raw stop wall, the protrusion are used cooperatively with the stop wall, described when the protrusion is inconsistent with the stop wall
First screw thread and the second screw thread stop occlusion.
8. intervention medical device according to claim 1, which is characterized in that the quantity of first stopper section and described
Two stopper section quantity be it is multiple and identical, multiple first stopper sections and multiple second stopper sections are respectively in the bolt head and cable
It is uniformly distributed on the circumferencial direction on head.
9. intervention medical device according to claim 1, which is characterized in that first stopper section and second backstop
Portion is respectively provided with a vertical wall, when the first stopper section of the bolt head and the second stopper section in the cable end portion are inconsistent
When, the vertical wall of first stopper section and second stopper section is in contact.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510685051.7A CN105250033B (en) | 2015-10-20 | 2015-10-20 | Interventional medical device and its conveying cable body, intervention medical device |
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| CN201510685051.7A CN105250033B (en) | 2015-10-20 | 2015-10-20 | Interventional medical device and its conveying cable body, intervention medical device |
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| CN105250033B true CN105250033B (en) | 2019-04-02 |
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| US7044134B2 (en) * | 1999-11-08 | 2006-05-16 | Ev3 Sunnyvale, Inc | Method of implanting a device in the left atrial appendage |
| CA2581677C (en) * | 2004-09-24 | 2014-07-29 | Nmt Medical, Inc. | Occluder device double securement system for delivery/recovery of such occluder device |
| WO2008109822A2 (en) * | 2007-03-07 | 2008-09-12 | University Of South Florida | Device for percutaneously creating a fetal iatrogenic gastroschisis |
| CN103690202B (en) * | 2013-12-30 | 2016-04-20 | 先健科技(深圳)有限公司 | The conveyer device of implant and implanted medical device |
| CN205251706U (en) * | 2015-10-20 | 2016-05-25 | 先健科技(深圳)有限公司 | Intervene medical instrument and carry cable body, intervene medical devices thereof |
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Effective date of registration: 20240104 Address after: 518051 1604, Xianjian technology building, No. 22, Keji South 12th Road, gaoxinyuan community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen Jianxin Medical Technology Co.,Ltd. Address before: 518000 1st-5th Floor of Saiba Research Building, Langshan Second Road, North District of Nanshan High-tech Industrial Park, Shenzhen City, Guangdong Province Patentee before: LIFETECH SCIENTIFIC (SHENZHEN) Co.,Ltd. |