CN217014017U - Liquid storage bag with intracranial pressure monitoring function - Google Patents

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a liquid storage bag with an intracranial pressure monitoring function. The liquid storage bag with the intracranial pressure monitoring function comprises a device shell, a silica gel film arranged above the device shell, a stop block arranged in the device shell, an inflow pipe arranged below the stop block, an outflow pipe arranged on the outer side of the device shell and a pressure sensor arranged on the bottom of the device shell; the silicone membrane, the device shell and the drainage outlet pipe are hermetically connected into a whole; the lower end of the check block is connected with the drainage inlet pipe. The utility model has the characteristics of accurate pressure measurement and difficult liquid leakage.

Description

Liquid storage bag with intracranial pressure monitoring function

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a liquid storage bag with an intracranial pressure monitoring function.

Background

Intracranial pressure monitoring is particularly important in neurosurgery, especially for patients with craniocerebral trauma and intracranial hematoma, and the minimally invasive implanted pressure sensor or the optical fiber sensor adopted at present is the mainstream monitoring means, and the sensor is generally packaged in a tubular catheter with a circular cross section, and usually the sensor is placed under the dura mater or in the ventricle for measurement. For hydrocephalus patients, drainage is also performed by implanting a cerebrospinal fluid drainage system. The liquid storage bag is commonly used in a drainage system, and can be used for drainage of hydrocephalus patients on one hand, and can be used for flushing and administration on the other hand.

However, the traditional intracranial pressure sensor for intracerebroventricular drainage integrates an intracranial pressure probe and a drainage tube, so that the risks of leakage, infection and the like are easy to occur in actual clinic, and the patient is directly injured.

The existing liquid storage bag is usually made of silica gel or a high polymer material with low hardness, and a puncture needle is easy to penetrate through the bottom during puncture, so that liquid leakage and damage to a patient are caused.

Therefore, it is necessary to design a liquid storage bag with intracranial pressure monitoring function, which is accurate in pressure measurement and not easy to leak liquid.

For example, the chinese utility model with application number CN201210004870.7 discloses a disposable intracranial pressure dynamic monitor. Comprises an intracerebral drainage tube, a three-way valve, an extracerebral drainage tube, a non-return bottle and a drainage bag/bottle. Although the system has the functions of drainage and real-time monitoring of intracranial pressure, the system is complicated and inconvenient to operate.

For another example, the chinese utility model with application number CN200820022069.4 discloses a disposable intracranial pressure monitor, and particularly relates to a disposable intracranial pressure monitor for monitoring and draining the intracranial pressure of a patient with a craniocerebral disease. Although the device is designed by adopting the Bourdon principle, and the rear end of the piezometer tube is hermetically connected with the gas collecting bottle, the device also has the problems of complex and inconvenient system operation.

For another example, a scalp reservoir ventricular external drainage device is disclosed in the chinese utility model with the application number CN 201922058602.3. Comprises a drainage device and a pressure measuring device. Although the functions of real-time pressure measurement and automatic control of drainage can be realized, the specific packaging implementation scheme of the pressure sensor is not embodied, and the pressure measurement point of the scheme is far away from the intracranial measurement point and is easy to be subjected to pipeline distance, so that the measured pressure is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid storage bag with an intracranial pressure monitoring function, which is accurate in pressure measurement and difficult in leakage, and aims to overcome the problems that in the prior art, a traditional intracerebroventricular drainage intracranial pressure sensor is easy to leak liquid and be infected in actual clinic, and an existing liquid storage bag is easy to cause leakage and damage to a patient because a puncture needle is easy to penetrate through the bottom during puncture.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

the liquid storage bag with the intracranial pressure monitoring function comprises a device shell, a silica gel film arranged above the device shell, a stop block arranged in the device shell, an inflow pipe arranged below the stop block, an outflow pipe arranged on the outer side of the device shell and a pressure sensor arranged on the bottom of the device shell; the silicone membrane, the device shell and the drainage outlet pipe are connected in a sealing way to form a whole; the lower end of the check block is connected with the drainage inlet pipe.

Preferably, a limiting seat is further arranged between the device shell and the stop block; the limiting seat surrounds the stop block.

Preferably, the limiting seat is provided with a limiting hole for limiting the stop block and a plurality of cerebrospinal fluid diversion ports; the lower end of the stop block penetrates through the limiting hole.

Preferably, a spring is arranged at the joint of the lower end of the stop block and the drainage inlet pipe.

Preferably, the bottom of the inner side of the device shell is provided with a packaging position for placing a pressure sensor; the inner side of the device shell is also provided with a drainage outlet; the drainage outlet is connected with the drainage outlet pipe.

Preferably, the surface of the pressure sensor is coated with a silica gel layer; the thickness of the silica gel layer is 0.05mm-0.1 mm.

Preferably, an extension cable is connected to the pressure sensor.

Preferably, the stop block is funnel-shaped; the upper end of the stop block is provided with a plurality of drainage through holes; the lower end of the block is provided with a plurality of flow holes for sampling or administrating cerebrospinal fluid.

Preferably, a protective tube for protecting the extension cable is further provided on the outside of the device housing.

Preferably, the stopper is made of one of polyetheretherketone PEEK, polyformaldehyde resin POM, metallic titanium and titanium alloy; the thickness of the stop block is 0.5mm-1 mm.

Compared with the prior art, the utility model has the beneficial effects that: (1) according to the utility model, the pressure sensor is additionally arranged in the liquid storage bag, the pressure sensor is placed at the bottom of the liquid storage bag and is communicated with cerebrospinal fluid in the cranium through the drainage tube connecting port at the bottom, rather than implanting the traditional sensor bougie into the cranium, on one hand, the damage possibly caused by the falling of the front end of the sensor is avoided, and on the other hand, the leakage and infection risks caused by the integration of the drainage tube and the sensor are avoided; (2) according to the utility model, the stop block is arranged above the pressure sensor at the bottom of the liquid storage bag, so that the stop block can not only prevent the pressure sensor from being influenced by a puncture needle during puncture, but also prevent the liquid storage bag from being penetrated to cause liquid leakage.

Drawings

FIG. 1 is a schematic structural diagram of a reservoir with intracranial pressure monitoring function according to the present invention;

FIG. 2 is a schematic diagram showing a structure of a reservoir with an intracranial pressure monitoring function of the present invention when being punctured by a puncture needle;

FIG. 3 is a schematic structural view of a spacing block according to the present invention;

FIG. 4 is a schematic view of a device housing according to the present invention;

FIG. 5 is a top view of the housing of the device of the present invention;

FIG. 6 is a partial cross-sectional view of the housing of the device of the present invention;

FIG. 7 is a schematic view of a stopper according to the present invention;

FIG. 8 is a fluid flow diagram of the reservoir with intracranial pressure monitoring function of the utility model during drainage;

FIG. 9 is a schematic view of the application of the reservoir with intracranial pressure monitoring function of the present invention.

In the figure: the drainage device comprises a drainage pipe 1, asilica gel membrane 2, adevice shell 3, astop block 4, a limiting seat 5, adrainage pipe 6, a spring 7, apressure sensor 8, a puncture needle 9, a puncture needle buckle 91, a puncture needle top 92, a cerebrospinalfluid diversion port 51, alimiting hole 52, apackaging position 31, adrainage outlet 32, aprotection pipe 33, anextension cable 34, asilica gel layer 35, a drainage throughhole 41, acirculation hole 42, anouter drainage catheter 102, aninner drainage catheter 103, pressuresensor monitoring equipment 104 and a pressuresensor connecting device 105.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention, the following description will explain specific embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, without inventive effort, other drawings and embodiments can be derived from them.

Example 1:

as shown in fig. 1, the reservoir with intracranial pressure monitoring function comprises adevice shell 3, asilicon membrane 2 arranged above the device shell, ablock 4 arranged in the device shell, aninflow pipe 6 arranged below the block, an outflow pipe 1 arranged on the outer side of the device shell and apressure sensor 8 arranged on the bottom of the device shell; the silicone membrane, the device shell and the drainage outlet pipe are connected in a sealing way to form a whole; the lower end of the check block is connected with the drainage inlet pipe. A limiting seat 5 is also arranged between the device shell and the stop block; the limiting seat surrounds the stop block. And a spring 7 is arranged at the joint of the lower end of the check block and the drainage inlet pipe. When the stop is pressed, the spring can play a role of buffering.

Wherein, when the dog is extruded, the spring can play the cushioning effect. The silica gel membrane is a double-layer silica gel layer, and the thickness of the silica gel layer is preferably 0.1mm-0.5 mm.

The reservoir with intracranial pressure monitoring function shown in fig. 1 is shown in fig. 2 when used for puncturing. In fig. 2, a puncture needle port 91 is formed in the puncture needle 9, the top 92 of the puncture needle is a solid tip ellipse, and is used for preventing the silica gel from being damaged during puncture and cutting the silica gel in the needle to cause blockage during puncture, and the puncture needle port is formed in the side surface of the puncture needle.

The liquid storage bag with the intracranial pressure monitoring function shown in figure 1 has the following situations when in use:

the first use case: when the cerebrospinal fluid is required to be sampled or the channel is flushed by the physiological saline or the puncture is used for drug administration, the puncture needle penetrates through the silica gel membrane to be operated, and the stop block can block the puncture needle to prevent the liquid storage bag caused by the over-deep puncture from penetrating or damaging other parts in the liquid storage bag.

The use case two: when the drainage pipe is adopted, a flow valve may be additionally arranged in the middle or other devices such as a luer connector may be additionally arranged at the tail end, and at the moment, the blockage in the drainage pipeline is pressurized by pressing the silicon membrane.

The use case three: during each puncture or pressing of the pellosil, the operation time (sudden abnormal pressure change) can be recorded through the pressure sensor, and when the pellosil is in a static state, the intracranial pressure change is monitored.

Further, as shown in fig. 3, the limiting seat is provided with alimiting hole 52 for limiting the stop block and a plurality of cerebrospinalfluid diversion ports 51; the lower end of the stop block penetrates through the limiting hole. The limiting seat is used for limiting the stop block and guiding the cerebrospinal fluid.

Further, as shown in fig. 4 and 5, apackaging position 31 for placing a pressure sensor is arranged at the bottom of the inner side of the device shell; the inner side of the device shell is also provided with anoutflow port 32; the drainage outlet is connected with the drainage outlet pipe.

Further, as shown in fig. 6, asilica gel layer 35 is coated on the surface of the pressure sensor; the thickness of the silica gel layer is 0.05mm-0.1 mm. The silica gel layer plays a certain protection role in the pressure sensor. The pressure sensor is connected with anextension cable 34, and the extension cable can facilitate the pressure sensor to be connected with external equipment. Aprotective tube 33 for protecting the extension cable is also provided on the outside of the device housing.

Further, as shown in fig. 7, the stopper is funnel-shaped; the upper end of the stop block is provided with a plurality of drainage throughholes 41; the lower end of the block is provided with a plurality of flow holes 42 for sampling or administrating cerebrospinal fluid. The baffle block is made of one of PEEK, POM, titanium and titanium alloy; the thickness of the stop block is 0.5mm-1 mm.

As shown in FIG. 8, the fluid flow direction of the reservoir with intracranial pressure monitoring function of the utility model during drainage is as follows:

liquid enters from the drainage inlet pipe, is shunted to the left side and the right side through the circulation hole at the lower end of the check block, is drained through the drainage through hole at the upper end of the check block, and is guided to the drainage outlet pipe and flows out from the drainage outlet pipe.

As shown in fig. 9, the specific process of the present invention is as follows:

when in use, the drainage outlet pipe in the liquid storage bag with the intracranial pressure monitoring function is externally connected with the drainageouter catheter 102, the drainage inlet pipe is externally connected with the drainage inner catheter, the extension cable of the pressure sensor is connected with the pressuresensor connecting device 105, and the pressure sensor connecting device is connected with the pressuresensor monitoring equipment 104.

Wherein the optimal size of the drainage catheter in the cranium and the brain connected with the liquid storage bag is 1.5mm-2mm and 3mm-5 mm.

In practical operation, the liquid storage bag with the intracranial pressure monitoring function is embedded under the scalp, only the external drainage inner catheter invades into the cranium, and the external drainage outer catheter can be partially implanted under the scalp.

The present invention integrates an intracranial pressure sensor and a reservoir drain, with the reservoir sensor implanted under the scalp rather than into the cranium.

According to the utility model, the pressure sensor is additionally arranged in the liquid storage bag, is placed at the bottom of the liquid storage bag and is communicated with cerebrospinal fluid in the cranium through the drainage tube connecting port at the bottom, rather than implanting the traditional sensor bougie into the cranium, so that on one hand, the damage possibly caused by the falling of the front end of the sensor is avoided, and on the other hand, the leakage and infection risks caused by the integration of the drainage tube and the sensor are avoided; according to the utility model, the stop block is arranged above the pressure sensor at the bottom of the liquid storage bag, so that the stop block not only can prevent the pressure sensor from being influenced by a puncture needle during puncture, but also can prevent the liquid storage bag from being penetrated to cause liquid leakage.

The foregoing has outlined, rather broadly, the preferred embodiment and principles of the present invention in order that those skilled in the art may better understand the detailed description of the utility model without departing from its broader aspects.

Claims (10)

1. The liquid storage bag with the intracranial pressure monitoring function is characterized by comprising a device shell, a silica gel film arranged above the device shell, a stop block arranged in the device shell, an inflow pipe arranged below the stop block, an outflow pipe arranged on the outer side of the device shell and a pressure sensor arranged on the bottom of the device shell; the silicone membrane, the device shell and the drainage outlet pipe are connected in a sealing way to form a whole; the lower end of the check block is connected with the drainage inlet pipe.

2. The reservoir with intracranial pressure monitoring function as recited in claim 1, wherein a spacing seat is further disposed between the device housing and the stopper; the limiting seat surrounds the stop block.

3. The reservoir with the intracranial pressure monitoring function as recited in claim 2, wherein the limiting seat is provided with a limiting hole for limiting the stop and a plurality of cerebrospinal fluid diversion ports; the lower end of the stop block penetrates through the limiting hole.

4. The reservoir with intracranial pressure monitoring function as recited in claim 1, wherein a spring is disposed at the connection of the lower end of the stopper and the drainage inlet tube.

5. The reservoir with intracranial pressure monitoring function as recited in claim 1, wherein the bottom of the inner side of the housing of the device is provided with a packaging position for placing the pressure sensor; the inner side of the device shell is also provided with a drainage outlet; the drainage outlet is connected with the drainage outlet pipe.

6. The reservoir with intracranial pressure monitoring function as recited in claim 5, wherein the pressure sensor surface is coated with a silica gel layer; the thickness of the silica gel layer is 0.05mm-0.1 mm.

7. A reservoir having intracranial pressure monitoring as recited in claim 1, 5 or 6, wherein the pressure sensor is connected with an extension cable.

8. The reservoir with intracranial pressure monitoring function as recited in claim 1, wherein the stopper is funnel-shaped; the upper end of the stop block is provided with a plurality of drainage through holes; the lower end of the block is provided with a plurality of circulation holes for sampling or administrating cerebrospinal fluid.

9. A reservoir with intracranial pressure monitoring as claimed in claim 7, wherein the device housing is further provided on its outside with a protective tube for protecting the extension cable.

10. A reservoir with intracranial pressure monitoring function as claimed in claim 1, wherein the stopper is made of one of PEEK, POM, ti, and ti alloy; the thickness of the stop block is 0.5mm-1 mm.

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