Intracranial pressure monitoring connecting line and waterproof method thereof

Abstract

The invention discloses an intracranial pressure monitoring connecting line and a waterproof method thereof.The intracranial pressure monitoring connecting line comprises a male connector and a female connector and is provided with triple waterproof sealing barriers, a first sealing barrier is arranged at the joint of an upper shell and a lower shell of the male connector or the female connector, and a first silica gel sealing piece is integrally formed through a secondary injection molding process; the second sealing barrier is arranged at the joint of the connecting wire shell and the cable, a second silica gel sealing piece is integrally formed through a secondary injection molding process, and the third sealing barrier is arranged at the insertion part of the male connector and the female connector and comprises an annular groove and a silica gel sealing ring embedded in the annular groove. A bidirectional buckle locking mechanism is arranged between the male connector and the female connector, the insertion force is 8-12 N, and the pull-out force is 12-18 N. The triple waterproof sealing barriers work cooperatively, even if a single sealing barrier loses efficacy, the other sealing barriers can still maintain the overall waterproof performance, and the reliability and safety of the intracranial pressure monitoring equipment in the using process are guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to an intracranial pressure monitoring connection line and a waterproof method thereof, and belongs to the technical field of medical monitoring equipment. BACKGROUND

[0002] Intracranial pressure monitoring is an important part of postoperative patient management in neurosurgery. As a key component of the monitoring system, the connection line directly affects the accuracy of the monitoring data and the safety of the equipment. With the development of medical technology, intracranial pressure monitoring equipment is being used more and more widely, and higher requirements are placed on the waterproof performance of the connection line.

[0003] Currently, there are various implementation methods for the waterproof technology of medical equipment connection lines. For example, a double waterproof connection line and electronic product are disclosed in Chinese Patent No. CN222735443U, which realizes double sealing in the radial and axial directions by setting a first waterproof sealing ring on the male data line and forming a sealed cavity on the second insulating outer module of the female data line. However, this technology only provides two waterproof barriers, which may pose a safety hazard in high-demand medical environments.

[0004] Chinese Patent No. CN113346286A proposes a waterproof connection line plug-in locking structure, which realizes waterproof function by setting a waterproof ring on the plug-in column of the female head body and tightly cooperating with the inner wall of the plug-in cavity of the male head body. The patent also designs a lead-in groove and a locking groove structure, so that the connector can be locked after plugging in to prevent loosening and falling off. However, this structure does not consider the waterproof problem at the junction of the connector shell and the cable, and there is a potential risk of liquid penetration.

[0005] Chinese Patent No. CN112117586B describes a pressure-resistant waterproof connection structure of a cable, which realizes the insulation and water resistance of the cable connector by filling sealing glue in the cavity of the shell and setting a sealing structure at the outlet of the cable. Although this method has good waterproof effect, the structure is complex and not convenient for quick connection and disassembly in clinical environment.

[0006] Chinese Patent No. CN209104465U discloses a waterproof connector female head with a plastic shell, which sets a first sealing element between the inner wall surface of the first connection cavity and the outer peripheral surface of the plug-in segment to block the gap between the installation cavity opening and the plug-in segment. This technology mainly focuses on a single sealing point and does not form a multiple waterproof barrier system.

[0007] Chinese Patent No. CN115377738A proposes a sealing structure of a micro connector, which sets a sealing gasket between the connector female head and the connector male head to meet the waterproof demand of the micro connector arranged in a small space. However, this technology does not consider the sealing problem at the junction of the connector shell, and the waterproof performance is limited.

[0008] The existing intracranial pressure monitoring connection line has the following technical problems: first, the connection part of the connector and the pressure monitoring shell or other docking components has poor waterproof performance, and liquid can easily penetrate into the inside through the connection gap of the connector; second, the penetration of liquid can cause internal circuit short circuit of the connector, resulting in failure of the monitoring device and interruption of intracranial pressure monitoring; third, the liquid can also corrode the metal contacts and other components inside the connector, shortening the service life of the connection line; fourth, the gaps and grooves on the surface of the existing connector are difficult to be completely disinfected, and when alcohol cotton swabs are used for wiping, liquid is more likely to penetrate into the inside. These problems are particularly serious during the critical period after craniocerebral surgery, and the monitoring interruption or data distortion caused by connector failure can delay the judgment of the patient's condition and increase the risk of the patient.

[0009] Therefore, it is urgent to develop an intracranial pressure monitoring connection line with multiple waterproof sealing barriers to ensure reliability and safety in a medical environment. SUMMARY

[0010] The technical problem to be solved by the present application is to provide an intracranial pressure monitoring connection line with high reliability and waterproof performance, in view of the technical defects of the existing intracranial pressure monitoring connection line, such as insufficient waterproof performance, liquid penetration causing circuit short circuit, metal contact corrosion, difficulty in complete disinfection, and possible monitoring interruption or data distortion caused by failure.

[0011] The technical solution adopted by the present application to solve the technical problem is: In a first aspect, the present application provides an intracranial pressure monitoring connection line, comprising a male connector and a female connector, and at least three waterproof sealing barriers are provided. The first sealing barrier is arranged at the upper and lower shell joint of the male connector or the female connector, and a first silica gel sealing piece is integrally formed by a secondary injection molding process. The second sealing barrier is arranged at the joint of the connection line shell and the cable, and a second silica gel sealing piece is integrally formed by a secondary injection molding process. The third sealing barrier is arranged at the insertion part of the male connector and the female connector, comprising an annular groove arranged at the insertion part and a silica gel sealing ring nested in the annular groove.

[0012] In an embodiment of the present application, the first silica gel sealing piece and / or the second silica gel sealing piece is made of medical grade liquid silicone rubber.

[0013] In an embodiment of the present application, the silica gel sealing ring of the third sealing barrier is an O-ring, and the cross-sectional diameter is greater than the depth of the annular groove, so as to form an interference fit when inserted.

[0014] In one embodiment of the present invention, a locking mechanism is provided between the male connector and the female connector; Preferably, the locking mechanism is a two-way snap-locking mechanism.

[0015] In one embodiment of the present invention, the bidirectional snap-locking mechanism is configured such that the insertion force is 8-12N and the pull-out force is 12-18N.

[0016] In one embodiment of the present invention, the triple waterproof sealing barrier works in concert, so that even if a single sealing barrier fails, the remaining sealing barriers can still maintain the overall waterproof performance.

[0017] In one embodiment of the present invention, the connecting wire is used in an intracranial pressure monitoring device to connect the monitoring probe and the host.

[0018] On the other hand, the present invention also provides a waterproofing method for an intracranial pressure monitoring connector as described in any one of the first aspects, the method comprising: The gap at the junction of the upper and lower outer shells is sealed by the first sealing barrier; The gap at the junction of the housing and the cable is sealed by the second sealing barrier; The third sealing barrier seals the mating surfaces of the male connector and the female connector when they are inserted.

[0019] In one embodiment of the present invention, the formation of the first sealing barrier and the second sealing barrier includes: injecting liquid silicone into a mold with an assembled shell using a two-stage injection molding process and then curing it.

[0020] In one embodiment of the present invention, the third sealing barrier achieves sealing by compressing the silicone sealing ring during the insertion process.

[0021] The beneficial effects that this application can produce include: This invention, by setting up a triple waterproof sealing barrier, ensures waterproof performance even if one seal fails, as the others still maintain their waterproof performance, greatly improving reliability. It solves the problems of connector short circuits and corrosion caused by liquid intrusion, reducing connector failure rate by over 95%. It extends the service life of intracranial pressure probes, increasing the average service life from 7 days to over 14 days, significantly reducing medical costs. The connector insertion and extraction forces are optimized to ensure sealing without excessively increasing operational difficulty, improving the convenience of clinical use. It also has good compatibility and expandability; the silicone material can be formulated with different hardness and elastic modulus to achieve optimal sealing performance depending on the usage environment. Attached Figure Description

[0022] Fig. 1This is a schematic diagram of the structure at the junction of the upper and lower shells of a male or female connector in one embodiment of this application. Fig. 2 This is a schematic diagram of the structure at the junction of the connector housing and the cable in one embodiment of this application; Figure label: 1-Upper outer shell; 2-First silicone seal; 3-Lower outer shell; 4-Outer shell; 5-Cable; 6-Second silicone seal. Detailed Implementation

[0023] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0024] Example 1 In this embodiment, please refer to Figs. 1-2 The present invention provides an intracranial pressure monitoring connection cable, which includes a male connector and a female connector. The connection cable is provided with a triple waterproof sealing barrier to ensure reliable waterproof performance when used in a medical environment.

[0025] The male connector of the intracranial pressure monitoring cable includes an upper shell 1 and a lower shell 3, which are precisely fitted together to form a complete shell structure. A first sealing barrier is provided at the junction of the upper shell 1 and the lower shell 3. This sealing barrier is integrally molded with a first silicone seal 2 using a secondary injection molding process. The first silicone seal 2 is made of medical-grade liquid silicone rubber, possessing excellent biocompatibility and sealing performance, effectively preventing external liquids from seeping into the connector.

[0026] A second sealing barrier is provided at the junction of the outer shell 4 and the cable 5, and a second silicone seal 6 is integrally molded using a secondary injection molding process. The second silicone seal 6 is also made of medical-grade liquid silicone rubber, which can tightly cover the junction of the cable 5 and the outer shell 4 to prevent liquid from seeping in.

[0027] The third sealing barrier is located at the mating portion of the male and female connectors, including an annular groove (not shown in the figure) at the mating portion and a silicone sealing ring (not shown in the figure) nested within the annular groove. It is understood that the silicone sealing ring uses an O-ring design, with a cross-sectional diameter larger than the depth of the annular groove. This allows for an interference fit during mating, ensuring the sealing performance of the mating portion.

[0028] A locking mechanism (not shown in the figure) is provided between the male and female connectors, employing a two-way snap-lock design. This locking mechanism is carefully designed to provide an insertion force of 8-12N and a pull-out force of 12-18N. This design ensures both a secure connection and easy separation of the connectors when needed, while preventing accidental detachment during use.

[0029] The triple waterproof sealing barrier works together to form a multi-layered protection mechanism. Even if a single sealing barrier fails for some reason, the remaining sealing barriers can still maintain the overall waterproof performance, greatly improving the reliability and safety of the product in clinical applications.

[0030] This type of intracranial pressure monitoring cable is mainly used in intracranial pressure monitoring equipment to connect the monitoring probe to the main unit. In clinical applications, intracranial pressure monitoring is an important tool in neurosurgical intensive care, and the waterproof performance of the cable is crucial to ensuring the accuracy of the monitoring data and the safe operation of the equipment.

[0031] In a preferred embodiment, both the first silicone seal 2 and the second silicone seal 6 are made of medical-grade liquid silicone rubber. This material not only has excellent sealing performance but also good biocompatibility, making it suitable for long-term use in medical environments.

[0032] Through the above-mentioned triple waterproof sealing barrier design, combined with the bidirectional snap-locking mechanism, this intracranial pressure monitoring cable can provide stable and reliable connection performance in clinical application environments, effectively preventing equipment failure or monitoring data distortion caused by liquid infiltration, and improving the accuracy and reliability of intracranial pressure monitoring.

[0033] Example 2 In this embodiment, the present invention also provides a waterproofing method for intracranial pressure monitoring connectors, which ensures reliable waterproofing performance of the connectors when used in a medical environment through a triple sealing barrier.

[0034] As described in Example 1, the intracranial pressure monitoring connection cable includes a male connector and a female connector, and is equipped with a triple waterproof sealing barrier. This embodiment mainly describes the implementation process of these triple sealing barriers.

[0035] Waterproofing methods include the following steps: Step 1: Seal the gap at the joint between the upper and lower outer shells using the first sealing barrier. At the junction of the upper housing 1 and lower housing 3 of the male or female connector, medical-grade liquid silicone is injected into the mold with assembled housings using a secondary injection molding process. After the liquid silicone cures in the mold, it forms a first silicone sealant 2. This sealant is integrally formed with the upper and lower housings and can effectively seal the gap at the junction of the upper and lower housings, preventing external liquids from seeping into the connector.

[0036] Step 2: Seal the gap between the outer casing and the cable using the second sealing barrier. At the junction of the outer shell 4 and the cable 5, a secondary injection molding process is also used to inject medical-grade liquid silicone into the mold where the outer shell and cable have been assembled. After the liquid silicone cures in the mold, it forms a second silicone sealant 6. This sealant is integrally formed with the outer shell 4 and the cable 5, and can tightly cover the connection between the cable 5 and the outer shell 4 to prevent liquid from seeping in.

[0037] Step 3: Seal the mating surfaces of the male and female connectors when they are inserted using a third sealing barrier. When the male and female connectors are mated, a seal is achieved by compressing the silicone sealing ring. Since the silicone sealing ring is an O-ring, its cross-sectional diameter is larger than the depth of the annular groove. During mating, it undergoes compression deformation, forming an interference fit, which effectively seals the mating surfaces of the male and female connectors, preventing liquid from seeping in from the mating area.

[0038] In a preferred embodiment, the formation of the first and second sealing barriers includes the steps of injecting liquid silicone into a mold with an assembled housing using a two-stage injection molding process and then curing it. This process ensures that the liquid silicone completely fills the gaps requiring sealing and forms a strong bond with the housing 4, thereby improving the sealing effect.

[0039] Through the coordinated operation of the aforementioned triple waterproof sealing barrier, even if a single sealing barrier fails for some reason, the remaining sealing barriers can still maintain the overall waterproof performance, greatly improving the reliability and safety of the product in clinical applications. This waterproofing method is suitable for intracranial pressure monitoring devices, ensuring that the connection cable between the monitoring probe and the main unit has reliable waterproof performance, guaranteeing the accuracy of monitoring data and the safe operation of the equipment.

[0040] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An intracranial pressure monitoring connection cable, comprising a male connector and a female connector, characterized in that, The connecting line is provided with at least three waterproof sealing barriers; The first sealing barrier is disposed at the junction of the upper and lower shells of the male or female connector, and is integrally formed with a first silicone sealant through a secondary injection molding process; The second sealing barrier is located at the junction of the connecting wire shell and the cable, and is integrally formed with a second silicone seal through a secondary injection molding process; The third sealing barrier is disposed at the mating part of the male connector and the female connector, including an annular groove disposed at the mating part and a silicone sealing ring nested in the annular groove.

2. The intracranial pressure monitoring connection cable according to claim 1, characterized in that, The first silicone seal and / or the second silicone seal are made of medical-grade liquid silicone rubber.

3. The intracranial pressure monitoring connection cable according to claim 1, characterized in that, The silicone sealing ring of the third sealing barrier is an O-ring, and its cross-sectional diameter is greater than the depth of the annular groove, so as to form an interference fit during insertion.

4. The intracranial pressure monitoring connection cable according to claim 1, characterized in that, A locking mechanism is provided between the male connector and the female connector; Preferably, the locking mechanism is a two-way snap-locking mechanism.

5. The intracranial pressure monitoring connection line according to claim 4, characterized in that, The bidirectional latching mechanism is configured such that the insertion force is 8-12N and the pull-out force is 12-18N.

6. The intracranial pressure monitoring connection cable according to claim 1, characterized in that, The triple waterproof sealing barrier works together so that even if one sealing barrier fails, the remaining sealing barriers can still maintain the overall waterproof performance.

7. The intracranial pressure monitoring connection cable according to claim 1, characterized in that, The connecting cable is used in the intracranial pressure monitoring device to connect the monitoring probe to the main unit.

8. A waterproofing method for an intracranial pressure monitoring connection wire as described in any one of claims 1-7, characterized in that, The method includes: The gap at the junction of the upper and lower outer shells is sealed by the first sealing barrier; The gap at the junction of the housing and the cable is sealed by the second sealing barrier; The third sealing barrier seals the mating surfaces of the male connector and the female connector when they are inserted.

9. The waterproofing method according to claim 8, characterized in that, The formation of the first sealing barrier and the second sealing barrier includes: injecting liquid silicone into a mold with an assembled shell using a two-stage injection molding process and then curing it.

10. The waterproofing method according to claim 8, characterized in that, The third sealing barrier achieves a seal by compressing the silicone sealing ring during insertion.

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