CN211214989U - Self-sealing plug structure for implantable medical device and implantable medical device - Google Patents
Self-sealing plug structure for implantable medical device and implantable medical device Download PDFInfo
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- CN211214989U CN211214989U CN201922108101.1U CN201922108101U CN211214989U CN 211214989 U CN211214989 U CN 211214989U CN 201922108101 U CN201922108101 U CN 201922108101U CN 211214989 U CN211214989 U CN 211214989U
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Abstract
The utility model relates to an implantable medical device is with self sealss sealing plug structure, including the shaping at the mounting hole of stimulator connector head part, first sealing ring, compress tightly a and second sealing ring, make first sealing ring produce the edge through compressing tightly a the radial pressure of mounting hole makes the second sealing ring produce and is on a parallel with the axial pressure of mounting hole to the realization is to the sealed of mounting hole inner wall. The self-sealing plug structure of the embodiment does not need to depend on a screw structure, and one sealing can be added on the basis of sealing provided by the screw. The whole structure does not need to be coated with glue, so that the assembly time can be saved; the material and the structure have good adaptability and are harmless to human bodies; the sealing performance is good, the damage is not easy to occur, and the service life of the implanted medical device can be prolonged.
Description
Technical Field
The utility model belongs to the technical field of implanted medical instrument, especially, relate to a self sealss sealing plug structure and implanted medical device.
Background
At present, implantable medical devices are widely applied to the treatment of diseases of nervous systems, heart systems and the like. Implantable medical devices include deep brain electrical stimulation, implantable cortical stimulation, implantable spinal electrical stimulation, implantable sacral electrical stimulation, implantable vagal electrical stimulation, implantable cardiac electrical stimulation systems (commonly referred to as cardiac pacemakers), implantable drug infusion systems, and the like. Wherein, the deep brain electrode stimulator has a structure as shown in figure 1 and mainly comprises: a pulse generator 10 implanted under the skin, a stimulation electrode 12 implanted in the deep brain region, an extension lead 13 connecting the stimulation electrode 12 and the pulse generator 10, and an external program controller 14 for program-controlling the pulse generator 10. The pulse generator 10 generates a specific electrical stimulation pulse signal, and is conducted to a stimulation part through the extension lead 13 and the stimulation electrode 12 for stimulation regulation. The in vitro programmer 14 may be wirelessly connected to the pulse generator 10 and change its electrical pulse stimulation parameters. One end of the stimulating electrode 12 is provided with a plurality of contacts, and after the stimulating electrode 12 is implanted into the target position, at least one contact is tightly contacted with the stimulating target point so as to conduct proper electric stimulation to the target point and treat the nervous diseases. It will be appreciated that the number of contacts of the stimulation electrode 12 may be one or more, and that the corresponding locations are stimulated to ensure stimulation effectiveness. The other end of the stimulating electrode 12 has a plurality of connection rings disposed in one-to-one correspondence with the plurality of contacts. The connection rings are used to electrically connect the plurality of contacts with the internal circuit of the pulse generator 10, respectively. The pulse generator 10 has a connecting element 11 for connecting the internal circuit of the pulse generator 10 to an electrode line 15. Other implantable medical devices are similar in construction except that the stimulation electrodes 12 are positioned differently in the body.
The implantable nerve stimulator needs to be implanted into a body, so that the requirements on sealing performance are high, the sealing performance is good, the implantable nerve stimulator is not easy to damage, long in service life, harmless to a human body and the like.
A patent previously filed by my company (document No. CN105771090B) discloses a sealing structure for an implantable medical device and a pulse generator. The screw comprises a screw, a screw rod and a screw rod, wherein the screw is provided with an external thread matched with a screw hole on a connecting block and a head part extending outwards along the radial direction; the insulating sealing ring is sleeved outside the screw and arranged between the connecting block and the head of the screw; when the screw is screwed up, extrude insulating sealing washer, make insulating sealing washer compress along the axial, the electrode wire that the connecting block will stretch into the connecting hole is fixed, make the screw have holistic decurrent pulling force simultaneously, thereby extrude insulating sealing washer, make insulating sealing washer compressed by the power in the axial, thereby make insulating sealing washer radially expand, make insulating sealing washer abundant with the outer wall and the contact of sealed downthehole wall of screw, and exert the effort respectively to the outer wall and the sealed downthehole wall of screw, the leakproofness has been improved, prevent water, body fluid or foreign matter from getting into in the implanted medical device from the sealed hole. The screw is provided with a corresponding sealing device to realize sealing, but a simple sealing cover is only arranged between the screw and the opening at the opening, the sealing effect of the sealing cover is poor, and water, body fluid or foreign matters cannot be well prevented from entering the screw and the opening.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the defects in the prior art, the self-sealing plug structure with good sealing performance is provided.
The utility model provides a technical scheme that its technical problem adopted is:
a self-sealing plug structure for an implantable medical device, comprising:
the mounting hole, the first sealing ring, the pressing piece and the second sealing ring are formed in the connector part of the stimulator;
the mounting hole is a step hole, and a matching hole is formed in the inner wall of the mounting hole along the circumferential direction;
the pressing piece comprises a first round sealing piece and a second round sealing piece, the diameter of the first sealing piece is not larger than that of the second sealing piece, and a circumferential containing cavity is formed between the first sealing piece and the second sealing piece;
the first sealing ring is arranged in the circumferential accommodating cavity, and the second sealing ring is arranged between the stepped surface of the mounting hole and the second sealing sheet;
the second sealing sheet is clamped into the matching hole so that the first sealing ring generates pressure along the radial direction of the mounting hole and the second sealing ring generates pressure parallel to the axial direction of the mounting hole, and the first sealing ring and the second sealing ring are in sealing fit with the inner wall of the mounting hole;
the center of the first sealing sheet on the pressing piece is also provided with a circular opening communicated with the bottom cavity.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, the center that compresses tightly the piece is provided with the bottom chamber, the longitudinal section of second sealing ring is the T type, and the top stretches into and compresses tightly the piece in the bottom chamber.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, the diameter of bottom chamber is crescent towards bottom open-ended direction.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, compress tightly the center of first gasket on the piece and still be provided with the intercommunication the opening of die cavity.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, the opening is the screw hole, the opening is provided with sealing screw.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, the diameter of first gasket is not more than mounting hole open-top's diameter.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, first sealing ring with the second sealing ring adopts the silica gel material preparation.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, compress tightly the piece and adopt metal material or mould the material preparation firmly.
Preferably, the utility model discloses an implanted medical device is with self sealss sealing plug structure, stimulator connector head part is made by plastic materials.
The utility model also provides an implantable medical device, include: the stimulator comprises a shell, a battery and a circuit board which are arranged in the shell, and a stimulator connector part arranged on the shell;
the stimulator connector part is provided with the self-sealing plug structure for the implantable medical device.
The utility model has the advantages that:
the utility model discloses an implanted medical device is with self sealss sealing plug structure, including the shaping at the mounting hole of stimulator connector head part, first sealing ring, compress tightly a and second sealing ring, make first sealing ring produce the edge through compressing tightly the radial pressure of mounting hole makes the second sealing ring produce and be on a parallel with the axial pressure of mounting hole to the realization is to the sealed of mounting hole inner wall. The self-sealing plug structure of the embodiment does not need to depend on a screw structure, and one sealing can be added on the basis of sealing provided by the screw. The whole structure does not need to be coated with glue, so that the assembly time can be saved; the material and the structure have good adaptability and are harmless to human bodies; the sealing performance is good, the damage is not easy to occur, and the service life of the implanted medical device can be prolonged.
Drawings
The technical solution of the present application is further explained below with reference to the drawings and the embodiments.
Fig. 1 is a schematic diagram of the working mode of an implantable deep brain stimulator in the prior art;
FIG. 2 is a schematic diagram of an implantable electrical stimulator;
fig. 3 and 4 are schematic structural views of the self-sealing plug structure for the implantable medical device according to the embodiment of the application;
fig. 5 is a schematic structural view of a pressing member according to an embodiment of the present application.
The reference numbers in the figures are:
2, a shell;
3 stimulator connector part;
10 a pulse generator;
11 connecting the components;
12 a stimulation electrode;
13 extending the lead;
14 an in vitro program controller;
15 electrode leads;
31 mating holes;
41 a first sealing ring;
42 a second seal ring;
43 a compression member;
431 a first sealing sheet;
432 second seal
433 a circumferential accommodating cavity;
434 opening;
435 bottom chamber.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
The present embodiment provides a self-sealing plug structure for an implantable medical device, as shown in fig. 1, including:
a mounting hole formed in the stimulator connector part 3, a first seal ring 41, a pressing member 43, and a second seal ring 42;
the mounting hole is a step hole, and a matching hole 31 is formed in the inner wall of the mounting hole along the circumferential direction;
the pressing piece 43 comprises a first round sealing sheet 431 and a second round sealing sheet 432 (the first sealing sheet 431 and the second sealing sheet 432 are connected through a vertical part), the diameter of the first sealing sheet 431 is not larger than that of the second sealing sheet 432, and a circumferential accommodating cavity 433 is formed between the first sealing sheet 431 and the second sealing sheet 432;
the first sealing ring 41 is arranged in the circumferential accommodating cavity 433, and the second sealing ring 42 is arranged between the stepped surface of the mounting hole and the second sealing sheet 432;
the second sealing sheet 432 is clamped into the matching hole 31, so that the first sealing ring 41 generates pressure along the radial direction of the mounting hole, the second sealing ring 42 generates pressure parallel to the axial direction of the mounting hole, and the first sealing ring 41 and the second sealing ring 42 are in sealing fit with the inner wall of the mounting hole.
The self-sealing plug structure for the implantable medical device in the above embodiment includes a mounting hole formed in the stimulator connector part 3, a first sealing ring 41, a pressing member 43, and a second sealing ring 42, and the pressing member 43 causes the first sealing ring 41 to generate a pressure along the radial direction of the mounting hole, and causes the second sealing ring 42 to generate a pressure parallel to the axial direction of the mounting hole, thereby realizing sealing of the inner wall of the mounting hole. The self-sealing plug structure of the embodiment does not need to depend on a screw structure, and one sealing can be added on the basis of sealing provided by the screw. The whole structure does not need to be coated with glue, so that the assembly time can be saved; the material and the structure have good adaptability and are harmless to human bodies; the sealing performance is good, the damage is not easy, and the service life can be prolonged.
As a further improvement, a bottom cavity 435 is arranged in the center of the pressing member 43, the longitudinal section of the second sealing ring 42 is T-shaped, and the top of the second sealing ring extends into the bottom cavity 435 of the pressing member 43.
As a further improvement, the diameter of the bottom cavity 435 gradually increases toward the bottom opening, that is, the inner cavity of the bottom cavity 435 is a conical surface with a larger opening and a smaller inner part. Thereby achieving tight coupling with the inner cavity of the bottom chamber 435 under the condition that the second sealing ring 42 can be deformed by force.
As a further improvement, a circular opening 434 communicating with the bottom cavity 435 is further provided at the center of the first sealing sheet 431 on the pressing member 43, and the opening 434 is provided to exhaust gas, so that the second sealing ring 42 can enter the bottom cavity 435. The opening 434 is a threaded hole, and the opening 434 is provided with a sealing screw, so that the second sealing ring 42 can be prevented from being directly exposed by sealing the opening 434 with the screw.
The diameter of the first sealing sheet 431 is not larger than that of the top opening of the mounting hole, so that the first sealing sheet 431 can completely enter the mounting hole.
The first sealing ring 41 and the second sealing ring 42 are made of soft materials such as silicon rubber, for example, medical silicon rubber materials.
The pressing member 43 is made of a metal material or a hard plastic material, such as 316 stainless steel.
The stimulator connector part 3 is made of a plastic material.
Example 2
The present embodiments provide an implantable medical device comprising:
a housing 2, a battery and a circuit board (neither battery nor circuit board is shown) disposed in the housing 2, a stimulator connector portion 3 disposed on the housing 2;
the stimulator connector part 3 is provided with a self-sealing plug structure for an implantable medical device as in embodiment 1.
In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides an implantable medical device is with self sealss sealing plug structure which characterized in that includes:
a mounting hole formed in the stimulator connector part (3), a first sealing ring (41), a pressing piece (43) and a second sealing ring (42);
the mounting hole is a step hole, and a matching hole (31) is formed in the inner wall of the mounting hole along the circumferential direction;
the pressing piece (43) comprises a first circular sealing sheet (431) and a second circular sealing sheet (432), the diameter of the first sealing sheet (431) is not larger than that of the second sealing sheet (432), and a circumferential accommodating cavity (433) is formed between the first sealing sheet (431) and the second sealing sheet (432); a bottom cavity (435) is formed in the center of the pressing piece (43), the longitudinal section of the second sealing ring (42) is T-shaped, and the top of the second sealing ring extends into the bottom cavity (435) of the pressing piece (43);
the first sealing ring (41) is arranged in the circumferential accommodating cavity (433), and the second sealing ring (42) is arranged between the stepped surface of the mounting hole and the second sealing sheet (432);
the second sealing sheet (432) is clamped into the matching hole (31) so that the first sealing ring (41) generates pressure along the radial direction of the mounting hole, the second sealing ring (42) generates pressure parallel to the axial direction of the mounting hole, and the first sealing ring (41) and the second sealing ring (42) are in sealing matching with the inner wall of the mounting hole;
the center of the first sealing sheet (431) on the pressing piece (43) is also provided with a circular opening (434) communicated with the bottom cavity (435).
2. The self-sealing plug structure for an implantable medical device according to claim 1, wherein the bottom cavity (435) has a diameter that gradually increases toward the bottom opening.
3. The self-sealing plug structure for the implantable medical device according to claim 1, wherein the opening (434) is a threaded hole, and the opening (434) is provided with a sealing screw.
4. The self-sealing plug structure for an implantable medical device according to any one of claims 1-3, wherein a diameter of the first sealing sheet (431) is not larger than a diameter of the top opening of the mounting hole.
5. The self-sealing plug structure for the implantable medical device according to claim 1, wherein the first sealing ring (41) and the second sealing ring (42) are made of a silicone material.
6. The self-sealing plug structure for the implantable medical device according to claim 1, wherein the compressing member (43) is made of a metal material or a hard plastic material.
7. The self-sealing plug structure for an implantable medical device according to claim 1, wherein the stimulator connector part (3) is made of a plastic material.
8. An implantable medical device, comprising: a housing (2), a battery and a circuit board arranged in the housing (2), and a stimulator connector part (3) arranged on the housing (2);
the stimulator connector part (3) is provided with a self-sealing plug structure for an implantable medical device according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922108101.1U CN211214989U (en) | 2019-11-29 | 2019-11-29 | Self-sealing plug structure for implantable medical device and implantable medical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922108101.1U CN211214989U (en) | 2019-11-29 | 2019-11-29 | Self-sealing plug structure for implantable medical device and implantable medical device |
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| Publication Number | Publication Date |
|---|---|
| CN211214989U true CN211214989U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922108101.1U Active CN211214989U (en) | 2019-11-29 | 2019-11-29 | Self-sealing plug structure for implantable medical device and implantable medical device |
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| CN (1) | CN211214989U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289137A (en) * | 2021-05-24 | 2021-08-24 | 申晨 | Implantable medical device based on self-sealing plug structure |
| WO2023124496A1 (en) * | 2021-12-29 | 2023-07-06 | 上海微创生命科技有限公司 | Subcutaneously implantable medical unit, subcutaneously implantable medical device, and irradiation sterilization shielding device |
-
2019
- 2019-11-29 CN CN201922108101.1U patent/CN211214989U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289137A (en) * | 2021-05-24 | 2021-08-24 | 申晨 | Implantable medical device based on self-sealing plug structure |
| WO2023124496A1 (en) * | 2021-12-29 | 2023-07-06 | 上海微创生命科技有限公司 | Subcutaneously implantable medical unit, subcutaneously implantable medical device, and irradiation sterilization shielding device |
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