CN210131166U - Ventricular assist device outlet waterproof construction - Google Patents
Ventricular assist device outlet waterproof construction Download PDFInfo
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- CN210131166U CN210131166U CN201920162207.7U CN201920162207U CN210131166U CN 210131166 U CN210131166 U CN 210131166U CN 201920162207 U CN201920162207 U CN 201920162207U CN 210131166 U CN210131166 U CN 210131166U
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- assist device
- ventricular assist
- threading hole
- inner cover
- cable
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Abstract
The utility model discloses a waterproof structure of a wire outlet of a ventricular assist device, which comprises a shell, a conductive middle connecting piece, an inner cover, an outer cover, a cable and a circuit board; the shell is provided with a water baffle, and the water baffle is provided with a mounting hole; the conductive middle connecting piece penetrates through the mounting hole, and the conductive middle connecting piece is connected with the mounting hole in a sealing manner; the inner cover is arranged outside the shell, a threading hole is formed in the inner cover, and the water baffle is arranged in a range surrounded by the inner cover; the outer cover is connected with the inner cover in a sealing mode, and a sealing cavity is defined by the outer cover, the inner cover and the water baffle; one part of the cable penetrates through the threading hole and is arranged in the sealing cavity, a sealing sleeve is sleeved on the part of the cable arranged in the threading hole, and the part of the cable arranged in the sealing cavity is electrically connected with the conductive middle connecting piece; the circuit board is arranged in the shell and is electrically connected with one end of the conductive middle connector arranged in the shell; this scheme has realized dual waterproof through seal cover and breakwater to the problem that prior art waterproof performance is poor has been solved.
Description
Technical Field
The utility model relates to a waterproof construction, in particular to ventricular assist device outlet waterproof construction.
Background
The ventricular assist device is a mechanical heart assist device which provides support for circulation when the ventricle cannot meet the perfusion requirement of the system; by maintaining and increasing the body and lung circulation, the tissue perfusion is ensured and improved, the myocardial oxygen consumption is reduced, the myocardial oxygen supply is increased, the function of the failing heart is recovered or the heart function is temporarily replaced to wait for heart transplantation, and the method is also a powerful rescue measure for severe heart failure.
However, in the prior art, the cable interface part is only sealed by a sealing sleeve, and along with the increase of the use time, blood easily permeates into the ventricular assist device, so that the ventricular assist device is broken or even damaged, and serious potential safety hazards are brought to patients.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ventricular assist device outlet waterproof construction to solve the relatively poor problem of current ventricular assist device waterproof performance.
In order to solve the technical problem, the utility model provides a waterproof structure for a wire outlet of a ventricular assist device, which comprises a shell, wherein a water baffle is arranged on the shell, and a mounting hole is arranged on the water baffle and penetrates through two opposite surfaces of the water baffle; the conductive middle connector penetrates through the mounting hole, the conductive middle connector is hermetically connected with the mounting hole, and two ends of the conductive middle connector are respectively arranged inside and outside the shell; the inner cover is arranged outside the shell, a threading hole is formed in the inner cover, and the water baffle is arranged in a range surrounded by the inner cover; the outer cover is connected with the inner cover in a sealing mode, and a sealing cavity is defined by the outer cover, the inner cover and the water baffle; a part of the cable penetrates through the threading hole and is arranged in the sealing cavity, a sealing sleeve is sleeved on the part of the cable arranged in the threading hole, and the part of the cable arranged in the sealing cavity is electrically connected with the conductive middle connecting piece; and the circuit board is arranged in the shell and is electrically connected with one end of the conductive middle connector arranged in the shell.
Wherein, the conductive middle connecting piece is a wire needle.
The wire guide needle is sleeved with an insulating rubber pad, and the insulating rubber pad is arranged between the wire guide needle and the mounting hole.
And glue is filled between the insulating rubber gasket and the mounting hole.
The shape of the sealing sleeve is conical, the shape of the threading hole is matched with that of the sealing sleeve, and the sealing sleeve is abutted to the inner wall of the threading hole.
And glue is filled between the sealing sleeve and the threading hole.
The wire threading device comprises a wire threading hole, a rubber coating hole and a rubber coating layer, wherein the wall of the wire threading hole is provided with the rubber coating hole, and the rubber coating hole penetrates through the wall of the wire threading hole.
The cable is further sleeved with a clamping ring, and the clamping ring is clamped between the sealing sleeve and the outer cover.
The water baffle is welded and fixed with the shell, the inner cover is welded and fixed with the shell, and the outer cover is welded and fixed with the inner cover.
The connector is characterized in that glue is covered on the surface of the water baffle, and the glue covers the joint of the water baffle and the conductive middle connector.
The utility model has the advantages as follows:
firstly, a sealing sleeve is sleeved at the part of the cable, which is arranged in the threading hole, so that a first waterproof barrier is constructed between the threading hole and the cable to prevent moisture from entering the sealing cavity through the threading hole; secondly, because the conductive middle connector is connected with the mounting hole in a sealing manner, the part of the cable arranged in the sealing cavity is electrically connected with the conductive middle connector, the circuit board is electrically connected with one end of the conductive middle connector arranged in the shell, namely, the cable can be electrically communicated with the circuit board through the conductive middle connector, even if moisture enters the sealing cavity, the moisture can still be blocked by the water baffle, and thus, the double waterproof function of the ventricular assist device is realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a disassembled structure provided by a preferred embodiment of a waterproof structure of a wire outlet of a ventricular assist device according to the present invention;
FIG. 2 is a schematic view of a pre-assembly structure of a guide wire needle provided in accordance with a preferred embodiment of a waterproof structure for a wire outlet of a ventricular assist device according to the present invention;
FIG. 3 is a schematic view of the assembled structure of the wire guide needle according to the preferred embodiment of the waterproof structure of the outlet of the ventricular assist device of the present invention;
FIG. 4 is an enlarged view of part A of FIG. 1;
FIG. 5 is a schematic structural view of the assembled water baffle and the casing of the waterproof structure for the outlet of the ventricular assist device according to the preferred embodiment of the present invention;
FIG. 6 is a schematic view of a connection structure between a circuit board and a wire guide pin according to a preferred embodiment of the waterproof structure for a wire outlet of a ventricular assist device according to the present invention;
FIG. 7 is a schematic view of an assembled state of an inner cap according to a preferred embodiment of the waterproof structure for a wire outlet of a ventricular assist device according to the present invention;
FIG. 8 is a schematic view of a cable-to-wire needle connection structure provided in accordance with a preferred embodiment of the waterproof structure for a ventricular assist device outlet according to the present invention;
FIG. 9 is a schematic sectional view of the assembled state of the cable, the sealing sleeve and the snap ring provided by the preferred embodiment of the waterproof structure for the outlet of the ventricular assist device according to the present invention;
fig. 10 is a schematic structural view of a waterproof structure for a wire outlet of a ventricular assist device according to a preferred embodiment of the present invention.
The reference numbers are as follows:
1. a housing; 11. a flange; 2. a water baffle; 21. mounting holes; 22. a boss; 3. a conductive interposer; 4. an inner cover; 41. threading holes; 42. gluing holes; 5. an outer cover; 6. a cable; 7. sealing sleeves; 8. a circuit board; 9. an insulating rubber pad; 10. a snap ring.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As can be seen from fig. 1, fig. 2 and fig. 7, the ventricular assist device outlet waterproof structure according to the embodiment of the present invention includes a housing 1, a water baffle 2 is disposed on the housing 1, a mounting hole 21 is disposed on the water baffle 2, and the mounting hole 21 penetrates through two opposite surfaces of the water baffle 2; the conductive middle connector 3 penetrates through the mounting hole 21, the conductive middle connector 3 is hermetically connected with the mounting hole 21, and two ends of the conductive middle connector 3 are respectively arranged inside and outside the shell 1; the inner cover 4 is arranged outside the shell 1, a threading hole 41 is formed in the inner cover 4, and the water baffle 2 is arranged in a range surrounded by the inner cover 4; the outer cover 5 is connected with the inner cover 4 in a sealing mode, and a sealing cavity is formed by the outer cover 5, the inner cover 4 and the water baffle 2 in a surrounding mode; a part of the cable 6 passes through the threading hole 41 and is arranged in the sealed cavity, a sealing sleeve 7 is sleeved on the part of the cable 6 arranged in the threading hole 41, and the part of the cable 6 arranged in the sealed cavity is electrically connected with the conductive middle connector 3; and the circuit board 8 is arranged in the shell 1, and the circuit board 8 is electrically connected with one end, arranged in the shell 1, of the conductive middle connector 3.
Firstly, as the part of the cable 6, which is arranged in the threading hole 41, is sleeved with the sealing sleeve 7, a first waterproof barrier is constructed between the threading hole 41 and the cable 6 so as to prevent moisture from entering the sealing cavity through the threading hole 41; secondly, because the mounting hole 21 of breakwater 2 and electrically conductive connector 3 sealing connection, cable 6 can be through electrically conductive connector 3 and circuit board 8 electric connection in, so even there is moisture to enter into the sealed intracavity, this moisture still can be separated by breakwater 2 to the dual waterproof function of ventricular assist device has been realized.
Preferably, in order to enhance the sealing performance between the conductive middle connector 3 and the mounting hole 21, the conductive middle connector 3 should be made of a material that is not easily deformed, so as to avoid the influence of deformation and shrinkage on the sealing connection effect in the future application process of the conductive middle connector 3, as shown in fig. 1, a preferred embodiment may be that the conductive middle connector 3 is a wire guide pin.
At the moment, the conductive middle connector 3 is a wire needle, the wire needle is a rigid conductive device made of conductive metal, the deformation amount of the rigid conductive device is small, the wire needle can be prevented from deforming in the future to influence the sealing connection effect, and when the wire needle passes through the mounting hole 21 for assembly, the installation convenience of the wire needle is far superior to that of a flexible wire due to the fact that the wire needle cannot be completely deformed, and therefore installation production efficiency is greatly improved.
In addition, as can be seen from fig. 1, the number of the wire guiding pins is seven so as to be electrically connected to the circuits in the cable 6, i.e. the number of the wire guiding pins is not limited, and only the necessary connecting circuits in the cable 6 need to be connected and conducted.
Preferably, in order to further enhance the sealing connection effect between the wire guide needle and the mounting hole 21, it should be ensured that the gap between the wire guide needle and the mounting hole 21 should be in a fully filled state, as shown in fig. 2, a preferred embodiment may be that an insulating rubber pad 9 is sleeved on the wire guide needle, and the insulating rubber pad 9 is disposed between the wire guide needle and the mounting hole 21.
The insulating rubber pad 9 is approximately annular, so that the insulating rubber pad 9 can be sleeved outside the wire guide needle, and because the insulating rubber pad 9 has sufficient elasticity, the insulating rubber pad 9 not only can tightly sleeve the wire guide needle, but also can be kept in a tight elastic abutting state with the mounting hole 21 at any time so as to prevent water from penetrating through a gap between the insulating rubber pad and the mounting hole; the insulating rubber pad 9 is made of a colloid material with excellent elasticity, and the silica gel has various advantages of corrosion resistance, ageing resistance, excellent elasticity and the like, so the insulating rubber pad 9 can be preferably made of the silica gel.
Preferably, in order to further enhance the sealing connection effect between the wire guide and the mounting hole 21, the gap between the insulating rubber pad 9 and the mounting hole 21 may be sealed again, and a preferred embodiment may be that the gap between the insulating rubber pad 9 and the mounting hole 21 is filled with glue.
Although the water tightness between the wire needle and the mounting hole 21 can be enhanced by adding the insulating rubber pad 9, a gap is still formed between the insulating rubber pad 9 and the mounting hole 21 substantially, and only water is hardly passed through basically, and after filling glue between the insulating rubber pad 9 and the mounting hole 21, the insulating rubber pad 9 and the mounting hole 21 are almost connected into a whole, so that the water tightness is enhanced again; similarly, glue can be filled between the insulating rubber pad 9 and the wire guide needle, so as to enhance the water tightness between the two.
Preferably, in order to ensure good water tightness between the cable 6 and the threading hole 41, the sealing sleeve 7 should be closely attached to the cable 6 and the threading hole 41, as shown in fig. 9, a preferred embodiment may be that the sealing sleeve 7 has a conical shape, the threading hole 41 has a shape matching the shape of the sealing sleeve 7, and the sealing sleeve 7 abuts against the inner wall of the threading hole 41.
Taking fig. 9 as an example, the shape of the sealing sleeve 7 and the inner cavity of the threading hole 41 are both conical, and since the shapes of the sealing sleeve 7 and the inner cavity of the threading hole 41 are matched, when the sealing sleeve 7 is independently put into the threading hole 41, the sealing sleeve 7 can be easily and freely inserted into the threading hole 41; but because the sealing sleeve 7 is also sleeved outside the cable 6, the sealing sleeve 7 is expanded outwards, when the sealing sleeve 7 is simply inserted into the threading hole 41, only the narrow end of the sealing sleeve 7 can be inserted into the threading hole 41, and a part of the wide end of the sealing sleeve 7 is arranged outside the threading hole 41; if seal cover 7 is the shape such as cylinder, it is difficult to again at this moment in advancing seal cover 7 complete propulsion through wires hole 41 basically, and the benefit of toper seal cover 7 lies in only needing further application of force this moment in can advancing seal cover 7 complete propulsion through wires hole 41, can also make seal cover 7 closely centre gripping between through wires hole 41 and cable 6 to guarantee the good water proofness between through wires hole 41 and the cable 6.
Preferably, in order to further enhance the sealing connection effect between the sealing sleeve 7 and the threading hole 41, the gap between the sealing sleeve 7 and the threading hole 41 may be sealed again, and a preferred embodiment may be that glue is filled between the sealing sleeve 7 and the threading hole 41.
Although the sealing sleeve 7 is in a state of being tightly abutted with the threading hole 41, the moisture is difficult to pass through basically, a gap still exists between the sealing sleeve 7 and the threading hole 41, and after the glue is filled between the sealing sleeve 7 and the threading hole 41, the sealing sleeve 7 and the threading hole 41 are almost connected into a whole, so that the water tightness is enhanced again; similarly, glue may also be filled between the gland 7 and the cable 6, again to enhance the water tightness therebetween.
Preferably, in order to facilitate filling of glue between the sealing sleeve 7 and the threading hole 41, a related structure may be provided on the threading hole 41, as shown in fig. 7, a preferred embodiment may be that a gluing hole 42 is provided on a hole wall of the threading hole 41, and the gluing hole 42 penetrates through the hole wall of the threading hole 41.
After the cable 6 and the sealing sleeve 7 are inserted into the threading hole 41, glue is only required to be filled into the threading hole 41 through the glue coating hole 42, the glue can be naturally filled between the sealing sleeve 7 and the threading hole 41, namely, the glue is not required to be coated on the inner wall of the threading hole 41 or the outer wall of the sealing sleeve 7 in advance, the glue filling operation is not only simpler and more convenient than the glue coating operation, but also can ensure the comprehensive performance of the glue coverage range, and the phenomenon that the glue is solidified when the sealing sleeve 7 is inserted into the threading hole 41 is also avoided, so that the important guarantee is provided for the water tightness between the sealing sleeve 7 and the threading hole 41.
Preferably, in order to ensure good water tightness between the cable 6 and the threading hole 41, the sealing sleeve 7 should be firmly installed to avoid the water tightness being affected by the loosening of the sealing sleeve 7, as shown in fig. 9 and 10, a preferred embodiment may be that the cable 6 is further sleeved with a snap ring 10, and the snap ring 10 is clamped between the sealing sleeve 7 and the outer cover 5.
At this time, the snap ring 10 is held between the sealing sleeve 7 and the outer cover 5, so that the snap ring 10 can limit the sealing sleeve 7 from being disengaged from the threading hole 41, and the outer cover 5 substantially realizes the sealing connection between the sealing sleeve 7 and the outer cover 5 by pressing the snap ring 10 to the sealing sleeve 7.
Preferably, in order to ensure a good water tightness of the ventricular assist device outlet waterproof structure and to ensure water tightness of the connection portion between the respective components, in a preferred embodiment, the water guard 2 may be welded and fixed to the housing 1, the inner cover 4 may be welded and fixed to the housing 1, and the outer cover 5 may be welded and fixed to the inner cover 4.
Through the welding, can make breakwater 2 be connected as an organic whole with casing 1, inner cup 4 is connected as an organic whole with casing 1 to and enclosing cover 5 is connected as an organic whole with inner cup 4 to avoid the junction of part gap to thoroughly stopped the condition of moisture through each part junction infiltration.
Preferably, the water baffle 2 corresponds to the last line of defense of the ventricular assist device outlet waterproof structure, so in order to improve the waterproof performance of the water baffle 2, a preferred embodiment may be that the surface of the water baffle 2 is covered with glue, and the glue is covered to the joint of the water baffle 2 and the conductive union piece 3.
Therefore, glue can cover the mounting hole of the water baffle 2 and each connecting gap of the conductive middle connecting piece 3 at the moment, so that water is prevented from entering the shell 1 through the gap between the mounting hole and the conductive middle connecting piece 3, and the waterproof performance of the wire outlet waterproof structure of the ventricular assist device is further improved.
In view of the above improvement, the assembly process of the waterproof structure for the outlet of the ventricular assist device according to the embodiment of the present invention is substantially as follows:
1. as shown in fig. 2 and 3, the conductive interconnecting piece 3 is a wire guide needle, the wire guide needle is cylindrical, the insulating rubber pad 9 is firstly sleeved outside the wire guide needle, glue is coated on the outer surface of the insulating rubber pad 6 and the wall of the mounting hole 21, and then the wire guide needle is inserted into the mounting hole 21 until the insulating rubber pad 9 is flattened;
2. as shown in fig. 1, 4 and 5, the casing 1 is substantially circular, one position of the side wall of the casing 1 is a hollow structure, a circle of flange 11 is arranged on the outer wall of the casing 1 around the hollow structure, a boss 22 is arranged in the middle of the surface of the water baffle 2 facing the hollow structure, the boss 22 is embedded into the space surrounded by the flange 11, so that the surface of the water baffle 2 facing the hollow structure is abutted to the flange 11, and then the abutting position of the water baffle 2 and the flange 11 is welded, sealed and fixed;
3. as shown in fig. 6, the circuit board 8 and the end of the wire needle disposed inside the housing 1 are connected by soldering;
4. as shown in fig. 7, the inner cover 4 is substantially a hollow frame-shaped structure, the threading hole 41 is disposed at the right side of the inner cover 4, the axial direction of the threading hole 41 is substantially the same as the length direction of the inner cover 4, at this time, the inner cover 4 is surrounded outside the water guard 2, and the inner cover 4 and the housing 1 are welded and fixed;
5. as shown in fig. 8 and 9, the cable 6 is passed through the threading hole 41, then the gland 7 and the snap ring 10 are mounted on the cable 6, and the gland 7 is plugged into the threading hole;
6. as shown in fig. 2 and 8, the relevant lines of the cable 6 and the wire guide pins are welded and fixed correspondingly, and then glue is coated on the surface of the water baffle plate, so that the glue covers the abutting parts of the installation holes 21, the wire guide pins and the insulating rubber mats, and the connection between the cable 6 and the wire guide pins is reinforced;
7. as shown in fig. 10, the outer cover 5 and the inner cover 4 are correspondingly attached and abutted, at the moment, the outer cover 5 and the edge part of the inner cover 4 are in a corresponding matching state, and then the abutting part of the outer cover 5 and the inner cover 4 is welded to connect and fix the two;
8. as shown in fig. 7 and 10, the inside of the threading hole 41 is filled with glue through the glue applying hole 42, thereby completing the assembly of the whole ventricular assist device outlet waterproof structure.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A waterproof structure of a wire outlet of a ventricular assist device is characterized by comprising,
the water baffle plate is arranged on the shell, and mounting holes are formed in the water baffle plate and penetrate through two opposite surfaces of the water baffle plate;
the conductive middle connector penetrates through the mounting hole, the conductive middle connector is hermetically connected with the mounting hole, and two ends of the conductive middle connector are respectively arranged inside and outside the shell;
the inner cover is arranged outside the shell, a threading hole is formed in the inner cover, and the water baffle is arranged in a range surrounded by the inner cover;
the outer cover is connected with the inner cover in a sealing mode, and a sealing cavity is defined by the outer cover, the inner cover and the water baffle;
a part of the cable penetrates through the threading hole and is arranged in the sealing cavity, a sealing sleeve is sleeved on the part of the cable arranged in the threading hole, and the part of the cable arranged in the sealing cavity is electrically connected with the conductive middle connecting piece;
and the circuit board is arranged in the shell and is electrically connected with one end of the conductive middle connector arranged in the shell.
2. A ventricular assist device outlet waterproof structure as claimed in claim 1, wherein the conductive midconnector is a wire guide pin.
3. A ventricular assist device outlet port waterproof construction as claimed in claim 2, wherein the wire guide pin is sleeved with an insulating rubber pad, the insulating rubber pad being interposed between the wire guide pin and the mounting hole.
4. A ventricular assist device outlet waterproof structure as claimed in claim 3, wherein glue is filled between the insulating rubber mat and the mounting hole.
5. A ventricular assist device outlet waterproof structure as claimed in claim 1, wherein the sealing sleeve is tapered in shape, the shape of the threading hole matches the shape of the sealing sleeve, and the sealing sleeve abuts against the inner wall of the threading hole.
6. A ventricular assist device outlet waterproof structure as claimed in claim 5, wherein glue is filled between the sealing sleeve and the threading hole.
7. A ventricular assist device line outlet waterproof structure as claimed in claim 6, wherein the wall of the threading hole is provided with a glue coating hole, and the glue coating hole penetrates through the wall of the threading hole.
8. A ventricular assist device outlet port waterproof structure as claimed in claim 5, wherein a snap ring is further sleeved on the cable, and the snap ring is clamped between the seal sleeve and the outer cover.
9. A ventricular assist device outlet waterproof structure as claimed in claim 1, wherein the water deflector is welded to the housing, the inner cover is welded to the housing, and the outer cover is welded to the inner cover.
10. A ventricular assist device outlet waterproof structure as claimed in claim 1, wherein the surface of the water dam is covered with glue to the junction of the water dam and the conductive midconnector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162207.7U CN210131166U (en) | 2019-01-29 | 2019-01-29 | Ventricular assist device outlet waterproof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162207.7U CN210131166U (en) | 2019-01-29 | 2019-01-29 | Ventricular assist device outlet waterproof construction |
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| Publication Number | Publication Date |
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| CN210131166U true CN210131166U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920162207.7U Active CN210131166U (en) | 2019-01-29 | 2019-01-29 | Ventricular assist device outlet waterproof construction |
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| CN (1) | CN210131166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876217A (en) * | 2019-01-29 | 2019-06-14 | 哈尔滨工业大学（深圳） | Ventricular assist device line outlet waterproof construction |
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2019
- 2019-01-29 CN CN201920162207.7U patent/CN210131166U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876217A (en) * | 2019-01-29 | 2019-06-14 | 哈尔滨工业大学（深圳） | Ventricular assist device line outlet waterproof construction |
| CN109876217B (en) * | 2019-01-29 | 2024-09-20 | 哈尔滨工业大学（深圳） | Waterproof structure for outlet of ventricular assist device |
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