CN221060660U - Implantable sensor device - Google Patents

Abstract

The present utility model provides an implantable sensor device comprising: a sensor housing, a conduit, a sensor assembly, and a seal; the sensor housing includes a first housing and a second housing; one end of the first shell is closed, and the other end of the first shell is connected with the second shell in a sealing way; the first shell is provided with an opening, and an accommodating space is formed in the first shell; the second shell is provided with a through hole communicated with the accommodating space; one end of the guide pipe extends into the through hole of the second shell and is communicated with the accommodating space of the first shell; a sensor assembly comprising a diaphragm pressure sensor and a lead; the film pressure sensor is arranged at the opening of the first shell; one end of the lead is connected with the film pressure sensor, and the other end of the lead passes through the accommodating space and the catheter and then is connected with external equipment; the seal forms a first seal structure with the sensor housing. The implantable sensor device provided by the utility model has the advantages of simple structure, easiness in assembly and strong long-term implantation stability.

Description

Implantable sensor device

Technical Field

The utility model relates to the technical field of sensors, in particular to an implantable sensor device.

Background

The sensor device has important functions in the modern medical field, is often used for monitoring physiological parameters such as blood pressure, body temperature, heart rate and the like of a human body, the physiological parameters are basic and important vital indexes of the human body, the monitoring of the physiological parameters can timely grasp the state change of the human body and timely know the health condition of the human body, and the sensor device not only can provide accurate basis for clinical diagnosis, treatment and the like, but also can timely give an alarm when certain physiological parameters exceed the normal range. The implanted sensor has the advantages of high monitoring accuracy and long-term continuous monitoring due to implantation in a human body, but the implanted sensor is placed in the human body for a long time to work, and has higher requirements on stability and reliability.

The existing implanted sensor is usually a chip sensor made of a silicon-based material, the area of a chip bonding pad of the sensor is small, the welding difficulty is high, the chip is easy to damage due to the characteristic that the silicon-based material is easy to damage in the assembly process and the practical application process, the sensitivity of the silicon-based material to temperature and humidity is high, and the problem of reduced pressure sensing accuracy can occur when the sensor is implanted for a long time; therefore, the sensor has the problems of high assembly difficulty and poor long-term implantation stability. In view of this, there is a need for an implantable sensor device that is simple in structure, easy to assemble, and strong in long-term implantation stability.

Disclosure of utility model

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an implantable sensor device for solving the problems of complex structure, high assembly difficulty and poor long-term implantation stability of the existing implantable sensor.

To achieve the above and other related objects, the present utility model provides an implantable sensor device including: a sensor housing, a conduit, a sensor assembly, and a seal;

The sensor housing includes a first housing and a second housing; one end of the first shell is closed, and the other end of the first shell is connected with the second shell in a sealing way; the first shell is provided with an opening, and an accommodating space is formed in the first shell; the second shell is provided with a through hole communicated with the accommodating space;

One end of the guide pipe extends into the through hole of the second shell and is communicated with the accommodating space of the first shell;

The sensor assembly comprises a film pressure sensor and a lead wire; the film pressure sensor is arranged at the opening of the first shell; one end of the lead is connected with a film pressure sensor, and the other end of the lead passes through the accommodating space and the guide pipe and then is connected with external equipment;

The sealing piece is arranged at the opening of the first shell and forms a first sealing structure with the sensor shell.

In one embodiment of the invention, the device further comprises: supporting the preform; the support prefabricated member is arranged in the accommodating space of the first shell and is fixed with the inner wall of the accommodating space of the first shell; the film pressure sensor is arranged on the support prefabricated member; the leads pass through the support preform and connect with the membrane pressure sensor.

In an embodiment of the invention, the support preform is a support preform with a grooved body.

In an embodiment of the invention, the film pressure sensor is clamped at the opening and is arranged at one side of the sealing element facing the accommodating space, or the film pressure sensor is adhered at one side of the sealing element facing the accommodating space.

In an embodiment of the present invention, the catheter is a multi-cavity catheter, and a plurality of wires corresponding to the number of cavities of the multi-cavity catheter respectively pass through the cavities and are connected with the film pressure sensor through the contact piece.

In an embodiment of the invention, the wire is provided with a buffer reserved section in the accommodating space of the first housing.

In an embodiment of the invention, the wire is fixed on an inner wall of the accommodating space of the first housing.

In an embodiment of the invention, the sealing member is made of silica gel; the side of the sealing element facing the film pressure sensor is coated with waterproof glue.

In an embodiment of the invention, a second sealing structure is provided between the conduit and the inner wall of the through hole of the second housing.

In one embodiment of the invention, the device further comprises: the silica gel protective sleeve is arranged between the outer wall of the guide pipe and the inner wall of the through hole, and is sealed and bonded with the outer wall of the guide pipe and the inner wall of the through hole.

In one embodiment of the invention, the membrane pressure sensor is a PVDF membrane pressure sensor.

The implantable sensor and the electrical stimulation device provided by the utility model have the advantages of simple structure, good sealing performance and higher stability in practical application.

Drawings

Fig. 1 is a schematic structural view of an implantable sensor device according to an embodiment of the present utility model.

FIG. 2 is a schematic diagram of an implantable sensor device including a support preform according to an embodiment of the present utility model.

FIG. 3 is a schematic view of an implantable sensor device including a support preform with a grooved body according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of an implantable sensor device including a silicone protective sleeve according to an embodiment of the utility model.

FIG. 5 is a schematic view of a multi-lumen catheter according to an embodiment of the present utility model

Reference numerals illustrate:

1. Implantable sensor device

11. Sensor housing

111. First shell body

112. Second shell

12. Catheter tube

13. Sensor assembly

131. Film pressure sensor

132. Contact piece

133. Conducting wire

134. Support the prefabrication member

134A support preform with grooved body

14. Sealing element

15. Silica gel protective sleeve

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

It should be noted that, the structures, proportions, sizes and the like shown in the drawings attached to the present specification are used for understanding and reading only in conjunction with the disclosure of the present specification, and are not intended to limit the applicable limitations of the present utility model, so that any modification of the structures, variation of proportions or adjustment of sizes of the structures, proportions and the like should not be construed as essential to the present utility model, and should still fall within the scope of the disclosure of the present utility model without affecting the efficacy and achievement of the present utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the examples and embodiments described below may be combined with each other without conflict.

The application relates to an implantable sensor device 1, wherein the implantable sensor device 1 can monitor pressure changes of various parts in a human body, such as intracranial, intraperitoneal and the like, provide key diagnosis parameters for monitoring the condition of the human body, and perform early warning when abnormal pressure changes are detected.

Referring to fig. 1, a schematic structural diagram of an implantable sensor device 1 according to an embodiment of the present utility model is shown; as shown in fig. 1, the implantable sensor device 1 includes: sensor housing 11, catheter 12 and sensor assembly 13 and seal 14;

The sensor housing 11 includes a first case 111 and a second case 112; one end of the first housing 111 is closed, and the other end is in sealing connection with the second housing 112; the first housing 111 is provided with an opening, and an accommodating space is formed inside the opening; the second housing 112 is provided with a through hole, and the through hole is communicated with the accommodating space; the accommodating space is used for accommodating the sensor assembly 13 so as to prevent the sensor assembly 13 from being in direct contact with a human body;

One end of the conduit 12 extends into the through hole of the second housing 112, so as to realize the communication between the conduit 12 and the accommodating space of the first housing 111;

The sensor assembly 13 includes a thin film pressure sensor 131, a contact 132, and a wire 133; the film pressure sensor 131 is disposed at the opening of the first housing, so that the film pressure sensor 131 senses pressure variation in the human body when in use; the contact 132 connects the lead 133 and the film pressure sensor 131, so as to realize electrical connection between the lead 133 and the film pressure sensor 131; one end of the wire 133 passes through the catheter 12 and is connected with the film pressure sensor 131 through the contact piece 132, and the other end is connected with external equipment; the sensor assembly 13 is used for monitoring pressure changes of various parts in the human body, and when the sensor assembly is used, the film pressure sensor 131 senses the pressure changes in the human body, obtains corresponding pressure monitoring signals and transmits the pressure monitoring signals to external equipment through wires;

The sealing member 14 is disposed at the opening of the first housing 111, and forms a first sealing structure with the sensor housing, so as to prevent liquid from entering the device from the opening;

Optionally, the film pressure sensor 131 is clamped at the opening, and is disposed on a side of the sealing member 14 facing the accommodating space, or is adhered to a side of the sealing member 14 facing the accommodating space of the first housing 111, so that the film pressure sensor 131 is fixed at the opening.

The implantable sensor device provided by the utility model has the advantages of simple structure, easiness in assembly and high tightness, and the high tightness of the device ensures the high reliability of the device in practical application and simultaneously improves the accuracy of pressure sensing of the device.

In one embodiment, the sensor housing 11 is made of a material compatible with the human body to avoid foreign body reactions that can occur when the implantable sensor device is implanted into the human body for a long period of time, thereby causing the device to be repelled and/or disabled by the human body.

Preferably, the sensor housing 11 is made of titanium alloy.

In one embodiment, the first housing 111 and the second housing 112 are hermetically connected by laser welding.

In one embodiment, the catheter 12 is made of an insulating biosafety material; the biosafety material is a material which can be safely applied to organisms;

preferably, the catheter 12 is made of TPU material.

In one embodiment, a second sealing structure is provided between the outer wall of the conduit 12 and the inner wall of the through hole to prevent liquid from penetrating into the sensor device through the gap between the outer wall of the conduit 12 and the inner wall of the through hole; specifically, high polymer glue is used for sealing and bonding the outer wall of the conduit 12 and the inner wall of the through hole;

preferably, epoxy resin glue is selected to seal and bond between the outer wall of the conduit 12 and the inner wall of the through hole.

In one embodiment, the membrane pressure sensor 131 is a PVDF membrane pressure sensor;

in this embodiment, compared with a chip sensor made of a silicon-based material, the PVDF film pressure sensor has the characteristics of higher high temperature resistance, oxidation resistance, chemical corrosion resistance, and the like, and the integrally formed film is simple in structure, easier to assemble, and more stable and reliable in practical application, and can be closely attached to a human body after being implanted into the human body.

In an embodiment, the wire 133 is provided with a buffer reserved section in the accommodating space of the first housing 111 to provide a buffer for the wire 133 when being pulled by an external force, so that the wire 133 is not easy to fall off when being pulled by the external force.

In one embodiment, the wire 133 is fixed to the inner wall of the accommodating space of the first housing 111, so as to prevent the wire 133 from falling off due to shaking during use, thereby further improving the stability of the implantable sensor device; specifically, the conductive wires 133 are fixed to the inner wall of the accommodating space of the first housing 111 by using high polymer glue;

preferably, the wires 133 are fixed by epoxy glue.

In one embodiment, the sealing member 14 is made of silica gel, and a waterproof adhesive is coated on a side of the sealing member 14 facing the film pressure sensor 131;

in this embodiment, the side of the sealing member 14 contacting the human body is made of silica gel, and the silica gel is nontoxic, odorless and harmless to the human body, and has good compatibility with the human body; meanwhile, in order to prevent the liquid from penetrating through the silica gel layer of the sealing member 14, the performance of the thin film pressure sensor 131 is affected, such as inaccurate pressure sensing, so that a waterproof adhesive is coated on the side of the sealing member 14 facing the thin film pressure sensor 131 to further enhance the sealing performance of the device; further, in the case that the sensing performance of the film pressure sensor 131 is not affected, after the waterproof glue is coated on the side of the sealing member 14 facing the film pressure sensor 131, the sealing member may be further coated with a silica gel to further enhance the sealing performance of the device, which is not limited herein.

Referring to fig. 2, a schematic structural diagram of the implantable sensor device 1 according to another embodiment of the present utility model is shown; this embodiment differs from the implantable sensor device 1 shown in the embodiment of fig. 1 in that:

The sensor assembly 13 further comprises: supporting the preform 134;

The support prefabricated member 134 is disposed in the accommodating space of the first housing 111; the film pressure sensor 131 is disposed on the support preform 134; the support preform 134 provides support for the membrane pressure sensor 131 so that the membrane pressure sensor 131 can quickly return to its original position after being subjected to excessive pressure.

In one embodiment, the support preform 134 is made of an insulating biosafety material;

preferably, the support preform 134 is made of plastic material.

In one embodiment, the support prefabricated member 134 is fixed to the inner wall of the accommodating space of the first housing 111 by using high polymer glue;

Preferably, the support prefabricated member 134 is fixed to the inner wall of the accommodating space of the first housing 111 by using epoxy resin glue.

In one embodiment, the wire 133 passes through the support preform 134 to be connected with the film pressure sensor 131, so as to enhance the buffering of the wire 133 when being pulled by an external force, so that the wire 133 is not easy to fall off when being pulled by the external force.

Referring to fig. 3, a schematic structural diagram of the implantable sensor device 1 according to another embodiment of the present utility model is shown; this embodiment differs from the implantable sensor device 1 shown in the embodiment of fig. 2 in that:

The support preform 134 is an L-shaped grooved body support preform, and the grooved body support preform 134a provides displacement for the film pressure sensor 131 such that the film pressure sensor 131 has a cushioning effect when subjected to a destructive impact; the support prefabricated member 134a of the grooved body may further limit the pressure range borne by the film pressure sensor 132, so as to avoid the film pressure sensor 132 from being damaged when the pressure exceeds the bearing range.

Referring to fig. 4, a schematic structural diagram of the implantable sensor device 1 according to another embodiment of the present utility model is shown; this embodiment differs from the implantable sensor device 1 shown in the embodiment of fig. 1 in that:

The implantable sensor device 1 further comprises: the silica gel protective sleeve 15 is arranged between the outer wall of the catheter and the inner wall of the through hole, and the inner wall of the silica gel protective sleeve 15 is sealed and bonded with the outer wall of the catheter 12 and the inner wall of the through hole.

In a specific embodiment, the inner wall of the silica gel protecting sleeve 15 and the outer wall of the catheter 12 are respectively sealed and bonded by using high polymer glue, and the outer wall of the silica gel protecting sleeve 15 and the inner wall of the through hole of the second housing 112 are sealed and bonded;

Preferably, epoxy resin glue is selected to seal and bond the inner wall of the silica gel protective sleeve 15 and the outer wall of the catheter 12, and seal and bond the outer wall of the silica gel protective sleeve 15 and the inner wall of the through hole of the second housing 112;

In this embodiment, the silicone protection sleeve 15 provides a buffer for the catheter 12 and the second housing, so as to avoid the connection between the catheter 12 and the second housing 112 from being easily damaged due to stress concentration when the two are directly bonded.

In one embodiment, after the silicone protection sleeve 15, the catheter 12 and the second housing 112 are sealed and bonded, bonding is performed on the gaps of the inner walls of the through holes of the silicone protection sleeve 15, the catheter 12 and the second housing 112; specifically, the gap between the catheter 12, the silica gel protective sleeve 15 and the inner wall of the through hole of the second shell 112 is bonded by using high polymer glue;

Preferably, epoxy resin glue is selected to bond the gaps among the conduit 12, the silicone protective sleeve 15 and the inner wall of the through hole of the second housing 112.

In this embodiment, the high polymer glue is used to bond the gap, and the inner wall of the silica gel protective sleeve 15 and the outer wall of the catheter 12, and the outer wall of the silica gel protective sleeve 15 and the inner wall of the through hole of the second housing 112 are respectively bonded by sealing glue, which further improves the stability and the sealing reliability of the connection between the silica gel protective sleeve 15, the catheter 12 and the second housing 112.

Referring to fig. 5, a schematic structural diagram of the catheter in the implantable sensor device 1 according to the present utility model is shown; this embodiment differs from the implantable sensor device 1 shown in the embodiment of fig. 1 in that:

The catheter 12 is a multi-lumen catheter 12; the implantable sensor device 1 is provided with a plurality of wires 133 corresponding to the number of the cavities of the multi-cavity catheter, respectively penetrating through the cavities and being connected with the thin film pressure sensor 131;

In this embodiment, the wires do not interfere with each other, and one wire does not interfere with the other wires when swaying; and when a certain wire fails, such as falling off, poor contact and the like, other wires can still ensure normal connection with the film pressure sensor, so that the reliability of the device is improved.

In summary, the implantable sensor device provided by the utility model has a simple structure, is easy to assemble, and has higher stability and reliability in practical application. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (11)

1. An implantable sensor device, the implantable sensor device comprising:

A sensor housing including a first housing and a second housing; one end of the first shell is closed, and the other end of the first shell is connected with the second shell in a sealing way; the first shell is provided with an opening, and an accommodating space is formed in the first shell; the second shell is provided with a through hole communicated with the accommodating space;

One end of the guide pipe extends into the through hole of the second shell and is communicated with the accommodating space of the first shell;

A sensor assembly comprising a membrane pressure sensor and a lead; the film pressure sensor is arranged at the opening of the first shell; one end of the lead is connected with a film pressure sensor, and the other end of the lead passes through the accommodating space and the guide pipe and then is connected with external equipment;

And the sealing piece is arranged at the opening of the first shell and forms a first sealing structure with the sensor shell.

2. The apparatus as recited in claim 1, further comprising: supporting the preform; the support prefabricated member is arranged in the accommodating space of the first shell and is fixed with the inner wall of the accommodating space of the first shell; the film pressure sensor is arranged on the support prefabricated member; one end of the wire passes through the support prefabricated member to be connected with the film pressure sensor.

3. The apparatus of claim 2, wherein the support preform is a fluted body support preform.

4. The device according to claim 1, wherein the film pressure sensor is clamped at the opening and is arranged at one side of the sealing element facing the accommodating space, or the film pressure sensor is adhered at one side of the sealing element facing the accommodating space.

5. The device of claim 1, wherein the catheter is a multi-lumen catheter, and a plurality of wires corresponding to the number of lumens of the multi-lumen catheter pass through the lumens, respectively, and are connected to the membrane pressure sensor.

6. The device of claim 1, wherein the wire is provided with a buffer reserved section in the accommodating space of the first housing.

7. The device of claim 1, wherein the wire is fixed to an inner wall of the receiving space of the first housing.

8. The device of claim 1, wherein the seal is a silicone material; the side of the sealing element facing the film pressure sensor is coated with waterproof glue.

9. The device of claim 1, wherein a second seal is provided between the conduit and the inner wall of the through-hole of the second housing.

10. The apparatus as recited in claim 9, further comprising: the silica gel protective sleeve is arranged between the outer wall of the guide pipe and the inner wall of the through hole, and is sealed and bonded with the outer wall of the guide pipe and the inner wall of the through hole.

11. The apparatus of claim 1, wherein the membrane pressure sensor is a PVDF membrane pressure sensor.