CN205924710U - Implanted is seal structure and impulse generator for medical devices - Google Patents
Implanted is seal structure and impulse generator for medical devices Download PDFInfo
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- CN205924710U CN205924710U CN201620419586.XU CN201620419586U CN205924710U CN 205924710 U CN205924710 U CN 205924710U CN 201620419586 U CN201620419586 U CN 201620419586U CN 205924710 U CN205924710 U CN 205924710U
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Abstract
The utility model provides an implanted is seal structure for the medical devices, include, the screw, have with the connecting block on screw complex external screw thread and along the radial outside head that extends, the insulating seal circle, the cover is established outside the screw, sets up between the head of connecting block and screw, when the screw is screwed up, extrusion insulating seal circle, make insulating seal circle along axial compression, the connecting block will stretch into the electrode wire of connecting hole and fix, make the screw have holistic decurrent pulling force simultaneously, thereby extrusion insulating seal circle, it contracts to make the insulating seal circle defeated in the axial, thereby make the insulating seal circle upwards expand in the footpath, make insulating seal circle outer wall and closed hole the inner wall abundant and screw contact, and apply the effort respectively to the outer wall and the closed hole inner wall of screw, the leakproofness has been improved, prevent water, body fluid or foreign matter get into in the implanted medical devices from the closed hole. Furthermore, the utility model provides an impulse generator who has above -mentioned implanted seal structure for the medical devices.
Description
Technical field
This utility model is related to medical instruments field and in particular to a kind of implantable medical device sealing structure and pulse
Generator.
Background technology
At present, implantable medical device, is widely used in treating the diseases such as nervous system, cardiac system.Implantable medical
Device includes lesions located in deep brain, and implanted cortex stimulates, implanted spinal cord stimulation trial, implanted Sacral nerve electrical stimulation, plants
Enter formula vagus nerve electricity irritation, implantable cardiac electric stimulation（It is commonly called as cardiac pacemaker）, implanted drug infusion system etc..
Its midbrain depth electrode stimulator, structure is as shown in figure 1, main include：The one subcutaneous pulse generator 10 of implantation, an implantation is deep
The stimulating electrode 12 of brain position, one connects the extension lead 13 of this stimulating electrode 12 and pulse generator 10, and one is used for journey
Control the vitro program controlled instrument 14 of this pulse generator 10.Pulse generator 10 produces specific electric stimulation pulse signal, and by prolonging
Long wire 13 and stimulating electrode 12 are conducted to stimulation location and carry out stimulating regulation and control.Vitro program controlled instrument 14 can be with pulse generator 10
Wireless connection, and change its electric pulse stimulation parameter.One end of stimulating electrode 12 has multiple contacts, and stimulating electrode 12 is planted
After entering target position, at least one contact contacts closely with stimulating target spot, suitable electricity irritation is conducted to target spot, treats
The disease of neural class.It is appreciated that the contact of stimulating electrode 12 can be one or more, corresponding position is entered to assassinate
Swash, to ensure effect of stimulation.The other end of stimulating electrode 12 has the connection that multiple and above-mentioned multiple contact corresponds setting
Ring.Connection ring is used for electrically connecting multiple contacts respectively with the internal circuit of pulse generator 10.Pulse generator 10 has one
Coupling assembly 11, for being connected the internal circuit of pulse generator 10 with an electrode cable 15.Other implantable medical dresses
Similarly, simply stimulating electrode 12 is different in the position of human body for the structure put.
After these implantable medical devices implantation human body, need to safely and steadily run, this is accomplished by ensureing each connecting portion
The sealing of position, prevents body fluid from penetrating into and circuit transmission is impacted.When implantable medical device uses, generally first will stimulate electricity
The connecting portion of pulse generator is inserted in one end of pole or extension lead, then adopts holding screw by the stimulation of this insertion connecting portion
Electrode or extension lead locking.Thus it is guaranteed that the sealing of connection end is very crucial.Existing way is to place above screw
Sealing-plug, during locking, screwdriver passes through sealing-plug to screw and rotary screw locking, and then screwdriver is extracted and sealing-plug closing.
Chinese patent literature CN103893911A discloses a kind of sealing-plug of implantable medical device, by even
The sealing in the hole of connected components 11 fills in silicone rubber seal thing to realize carrying out water seal to sealing hole, is made by the effect of becket
Seal for the opening that screwdriver stretches on sealing-plug, but, by silicone rubber seal thing, the company's of filling in sealing hole operates when internal by force
Inconvenience, and easily occur problem that is not in place and leading to sealing effectiveness difference is installed, and the opening on silicone rubber seal thing
There is the hidden danger of seal failure.
Utility model content
For this reason, this utility model will solve sealing-plug in prior art installs inconvenient and sealing effectiveness difference defect, from
And a kind of implantable medical device sealing structure easy for installation, good sealing effect and pulse generator are provided.
A kind of implantable medical device sealing structure of the present utility model, including：
Screw, has the external screw thread with the screw cooperation on contiguous block and the head extending radially outward；
Insulated enclosure circle, is set in outside described screw, is arranged between described contiguous block and the head of screw, and sealing is described
Space between screw and sealing hole inwall；
Described screw towards described connection Block direction tighten when, extrude described insulated enclosure circle, make described insulated enclosure circle
Axially compressed.
Preferably, implantable medical device sealing structure of the present utility model, the top of described screw be provided with for
Cover the closure of the middle joint-cutting of sealing hole opening.
Preferably, the hole wall of implantable medical device sealing structure of the present utility model, described closure and sealing hole
Bonding.
Preferably, implantable medical device sealing structure of the present utility model, described closure and/or insulated enclosure circle
It is made up of silastic material.
Preferably, implantable medical device sealing structure of the present utility model, described screw head is close with described insulation
It is additionally provided with the tabletting of the annular being set in outside described screw between seal.
Preferably, implantable medical device sealing structure of the present utility model, described screw head and described tabletting it
Between be additionally provided with the ring spring being set in outside described screw.
Preferably, implantable medical device sealing structure of the present utility model, described screw is arranged with described insulation
The part of sealing ring is smooth outer wall.
Preferably, implantable medical device sealing structure of the present utility model, described screw is arranged with described insulation
The outer wall of the part of sealing ring is taper surface, and cross-sectional area is gradually reduced towards the direction near described contiguous block.
This utility model also provides a kind of pulse generator, including：Housing, is arranged on the battery in described housing and circuit
Plate, the coupling assembly being connected with described housing seal, described coupling assembly has the installing hole that power supply polar conductor stretches into, at least
One contiguous block and the sealing hole being correspondingly arranged with described contiguous block, described sealing in the hole is provided with above-mentioned implantable medical dress
Put and use sealing structure, described installing hole is flushed with the connecting hole on described contiguous block.
Preferably, pulse generator of the present utility model, described contiguous block and sealing hole are several that be set up in parallel.
With respect to prior art, this utility model has advantages below：
（1）Implantable medical device sealing structure of the present utility model, after tightening screw, contiguous block will stretch into connecting hole
Electrode cable fix, make screw have overall downward pulling force simultaneously, thus extruding insulation sealing ring, make insulated enclosure
Circle in the axial direction by force compresses so that insulated enclosure circle diametrically expands, make insulated enclosure circle fully and screw outer wall
With sealing hole contact internal walls, and the outer wall to screw and sealing hole inwall to apply active force respectively, improve sealing, prevent
Water, body fluid or foreign body enter in implantable medical device from sealing hole.
（2）Implantable medical device sealing structure of the present utility model, covers sealing hole opening using closure, can
Exposed with the screw preventing metal from making, water can also be stoped to a certain extent to enter opening by closure, seal simultaneously
Lid be provided with middle joint-cutting, screwdriver can be made to pass through this joint-cutting to extend into inside sealing hole, as figure and shown, thus rotating spiral shell
Nail, is conveniently dismantled.
（3）Implantable medical device sealing structure of the present utility model, screw head and insulated enclosure circle are provided with set
It is located at the tabletting of the annular outside described screw, after setting tabletting, tabletting can apply stressed matchmaker as screw to insulated enclosure circle
It is situated between, abrasion insulated enclosure circle when preventing screw from rotating, the diameter of tabletting is slightly smaller than the internal diameter of sealing hole, makes insulated enclosure circle stress
More uniform.
（4）Implantable medical device sealing structure of the present utility model, between described screw head and described tabletting also
It is provided with the ring spring being set in outside described screw.Setting ring spring after, due to the effect of spring, can to tabletting and then
Lasting pressure is produced to insulated enclosure circle, improves sealing further.
（5）Implantable medical device sealing structure of the present utility model, described screw is arranged with described insulated enclosure
The part of circle is smooth outer wall.Smooth outer wall stud portion can preferably be contacted with insulated enclosure circle, obtains preferably close
Envelope effect.
（6）Implantable medical device sealing structure of the present utility model, will be arranged with described insulated enclosure circle on screw
The outer wall of part be taper surface, screw is more tightened, then bigger to the extruding force of insulated enclosure circle it is thus possible to carry further
High leakproofness.
（7）Pulse generator of the present utility model adopts above-mentioned implantable medical device sealing structure, thus has
Above-mentioned advantage.
Brief description
In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right
In specific embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of implanted lesions located in deep brain device of the prior art；
Fig. 2 is the structural representation of the pulse generator in embodiment 3；
Fig. 3 is the sectional view of the implantable medical device sealing structure in embodiment 1；
Fig. 4 is the sectional view of one of the embodiment 2 implantable medical device sealing structure of embodiment；
Fig. 5 is the sectional view of the implantable medical device sealing structure of another embodiment in embodiment 2.
Description of reference numerals：
1- contiguous block；2- insulated enclosure circle；3- screw；4- tabletting；5- closure；6- ring spring；7- screwdriver；8- is even
Connect hole；9- installing hole；10- pulse generator；11- coupling assembly；12- stimulating electrode；13- extension lead 14- vitro program controlled instrument；
15- electrode cable.
Specific embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described it is clear that described
Embodiment is a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of not making creative work, broadly falls into this practicality
Novel protected scope.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", the orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, are only
For the ease of description this utility model with simplify description, rather than instruction or the hint device of indication or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly
Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning in this utility model for the language.
As long as additionally, involved technical characteristic in this utility model different embodiments disclosed below is each other
The conflict of not constituting just can be combined with each other.
Embodiment 1
The present embodiment provides a kind of implantable medical device sealing structure, as shown in figure 3, including：
Screw 3, has the external screw thread with the screw cooperation on contiguous block 1 and the head extending radially outward；
Insulated enclosure circle 2, is set in outside described screw 3, is arranged between described contiguous block 1 and the head of screw 3, sealing
Space between described screw 3 and sealing hole inwall, as being to complete to have blocked between screw 3 and sealing hole inwall in Fig. 2
Space；
Described screw 3, towards when tightening in described contiguous block 1 direction, extrudes described insulated enclosure circle 2, makes described insulated enclosure
Enclose 2 axially compressed.
The implantable medical device sealing structure of the present embodiment, after tightening screw 3, contiguous block 1 will stretch into connecting hole 8
Electrode cable is fixed, and makes screw 3 have overall downward pulling force simultaneously, thus extruding insulation sealing ring 2, makes insulated enclosure
Circle 2 is compressed by power F in the axial direction（Compress downwards in Fig. 3-5）, so that insulated enclosure circle 2 diametrically expands, make insulation close
Seal 2 outer wall and the sealing hole contact internal walls fully with screw 3, and the outer wall to screw 3 and sealing hole inwall apply work respectively
Firmly P, improves sealing, prevents water, body fluid or foreign body from entering in implantable medical device from sealing hole.
Embodiment 2
The present embodiment provides a kind of implantable medical device sealing structure, as shown in figure 4, including：
Screw 3, has the external screw thread with the screw cooperation on contiguous block 1 and the head extending radially outward；
Insulated enclosure circle 2, is set in outside described screw 3, is arranged between described contiguous block 1 and the head of screw 3, sealing
Space between described screw 3 and sealing hole inwall；
Described screw 3, towards when tightening in described contiguous block 1 direction, extrudes described insulated enclosure circle 2, makes described insulated enclosure
Enclose 2 axially compressed；
It is additionally provided with the pressure of the annular being set in outside described screw 3 between described screw 3 head and described insulated enclosure circle 2
Piece 4.
After setting tabletting 4, tabletting 4 can apply stressed medium as screw 3 to insulated enclosure circle 2, prevents screw 3 from rotating
When wear and tear insulated enclosure circle 2, the diameter of tabletting 4 is slightly smaller than the internal diameter of sealing hole, so that insulated enclosure circle 2 is more uniformly stressed.
Further, it is additionally provided with the ring being set in outside described screw 3 between described screw 3 head and described tabletting 4
Shape spring 6, as shown in Figure 5.
After setting ring spring 6, due to the effect of ring spring 6, can produce to tabletting 4 and then to insulated enclosure circle 2
Lasting pressure, improves sealing further.Certainly, as deformation, also one tabletting can be set again in screw 3 lower head.
Ring spring 6 can be oval ring spring or diaphragm spring etc..
Preferably, the part described screw 3 being arranged with described insulated enclosure circle 2 is smooth outer wall.As Figure 4 and 5 institute
Show, screw 3 from top to bottom, respectively head, smooth outer wall stud portion and have threaded stud portion, wherein there is screw thread
Stud portion be used for stretching in contiguous block 1 and coordinate with contiguous block 2.Smooth outer wall stud portion can preferably with insulated enclosure circle
2 contacts, obtain better seal effect.
Further, the outer wall described screw 3 being arranged with the part of described insulated enclosure circle 2 is taper surface, and transversal
Face area is gradually reduced towards the direction near described contiguous block 1.On the longitudinal section of screw 3, the contour line of conical outer wall and spiral shell
The angle of axis of nail 3 is 5-10 °, such as 5 °, 6 °, 8 °, 10 ° etc..Smooth outer wall stud portion can also be cylindrical.
By be arranged with screw 3 part of described insulated enclosure circle 2 outer wall be taper surface, screw 3 is more tightened, then right
The extruding force of insulated enclosure circle 2 bigger it is thus possible to further improve sealing.
Further, the top of described screw 3 is provided with the closure of the middle joint-cutting for covering sealing hole opening
5.Described closure 5 is bonding with the hole wall of sealing hole.
Cover sealing hole opening using closure 5, can prevent the screw 3 that metal is made from exposing, by closure 5
Water can be stoped to a certain extent to enter opening, closure 5 is provided with middle joint-cutting simultaneously, screwdriver 7 can be made to pass through this
Joint-cutting extend into inside sealing hole, as shown in Figures 4 and 5, thus rotating screw 3, is conveniently dismantled.
What deserves to be explained is, described closure 5 and/or insulated enclosure circle 2 are preferably made up of silastic material.
The heat resistance of silicone rubber and good permeability, additionally, silicone rubber also has physiological inertia, is not result in the prominent of blood coagulation
Go out characteristic, be the elite clone using on medical apparatus and instruments.
Screw 3 can be soket head cap screw or cross, in-line screw.
Sealing hole is from outside to inside as shown in Figures 4 and 5（From in figure top to bottm）, molding respectively haves three layers shoulder hole（It is respectively outer
Shoulder hole, middle shoulder hole, interior shoulder hole）, and in the hole footpath is gradually reduced from outside to inside, and contiguous block 1 is located at interior ladder in the hole,
Insulated enclosure circle 2 is located at middle shoulder hole, and tabletting 4 is usually located at outer shoulder hole（Tabletting 4 is likely to because tightening screw 3
Shoulder hole in entering afterwards, the diameter of therefore tabletting 4 should be less than the internal diameter of interior shoulder hole）, the head of screw 3 and closure 5 are located at
At outer shoulder hole.
Embodiment 3
The present embodiment provides a kind of pulse generator, as shown in Fig. 2 including：Housing 101, is arranged in described housing 101
Battery and circuit board（Battery and circuit board all do not mark in figure）, the coupling assembly 11 that is tightly connected with described housing 101,
The power supply installing hole 9 that stretches into of polar conductor had on described coupling assembly 11, at least one contiguous block 1 and right with described contiguous block 1
The sealing hole that should arrange, described sealing in the hole is provided with the implantable medical device sealing knot as described in embodiment 1 or 2
Structure, described installing hole 9 is flushed with the connecting hole 8 on described contiguous block 1, makes electrode cable can stretch into installing hole 9 company of passing through
Connect hole 8.
The pulse generator of the present embodiment, using the implantable medical device sealing structure of embodiment 1 or 2, thus tool
Have the advantages that described in embodiment 1 or 2.
Preferably, described contiguous block 1 and sealing hole are several that be set up in parallel.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among the protection domain created still in this utility model.
Claims (10)
1. a kind of implantable medical device sealing structure is it is characterised in that include：
Screw（3）, have and contiguous block（1）On the external screw thread of screw cooperation and the head that extends radially outward；
Insulated enclosure circle（2）, it is set in described screw（3）Outward, it is arranged on described contiguous block（1）With screw（3）Head between,
Seal described screw（3）Space and sealing hole inwall between；
Described screw（3）Towards described contiguous block（1）When direction is tightened, extrude described insulated enclosure circle（2）, make described insulation close
Seal（2）Axially compressed.
2. implantable medical device sealing structure according to claim 1 is it is characterised in that described screw（3）Upper
Side is provided with the closure of the middle joint-cutting for covering sealing hole opening（5）.
3. implantable medical device sealing structure according to claim 2 is it is characterised in that described closure（5）With
The hole wall bonding of sealing hole.
4. implantable medical device sealing structure according to claim 3 is it is characterised in that described closure（5）With/
Or insulated enclosure circle（2）It is made up of silastic material.
5. the implantable medical device sealing structure according to any one of claim 1-4 is it is characterised in that described screw
（3）Head and described insulated enclosure circle（2）Between be additionally provided with and be set in described screw（3）The tabletting of outer annular（4）.
6. implantable medical device sealing structure according to claim 5 is it is characterised in that described screw（3）Head
With described tabletting（4）Between be additionally provided with and be set in described screw（3）Outer ring spring（6）.
7. implantable medical device sealing structure according to claim 5 is it is characterised in that described screw（3）Upper set
It is provided with described insulated enclosure circle（2）Part be smooth outer wall.
8. implantable medical device sealing structure according to claim 7 is it is characterised in that described screw（3）Upper set
It is provided with described insulated enclosure circle（2）The outer wall of part be taper surface, and cross-sectional area is towards near described contiguous block（1）'s
Direction is gradually reduced.
9. a kind of pulse generator, including：Housing（101）, it is arranged on described housing（101）Interior battery and circuit board, with institute
State housing（101）The coupling assembly being tightly connected（11）It is characterised in that described coupling assembly（11）On there is power supply polar conductor
The installing hole stretching into（9）, at least one contiguous block（1）And with described contiguous block（1）The sealing hole being correspondingly arranged, described sealing hole
Interior setting is just like the implantable medical device sealing structure described in any one of claim 1-8, described installing hole（9）With described
Contiguous block（1）On connecting hole（8）Flush.
10. pulse generator according to claim 9 is it is characterised in that described contiguous block（1）It is side by side with sealing hole
Setting several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419586.XU CN205924710U (en) | 2016-05-11 | 2016-05-11 | Implanted is seal structure and impulse generator for medical devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419586.XU CN205924710U (en) | 2016-05-11 | 2016-05-11 | Implanted is seal structure and impulse generator for medical devices |
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| Publication Number | Publication Date |
|---|---|
| CN205924710U true CN205924710U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620419586.XU Active CN205924710U (en) | 2016-05-11 | 2016-05-11 | Implanted is seal structure and impulse generator for medical devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771090A (en) * | 2016-05-11 | 2016-07-20 | 常州瑞神安医疗器械有限公司 | Sealing structure for implantable-type medical instrument, and pulse generator |
-
2016
- 2016-05-11 CN CN201620419586.XU patent/CN205924710U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771090A (en) * | 2016-05-11 | 2016-07-20 | 常州瑞神安医疗器械有限公司 | Sealing structure for implantable-type medical instrument, and pulse generator |
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