阅读说明：本技术 用于测量血压的生物医学连接设备 (Biomedical connection device for measuring blood pressure ) 是由 A·彼得拉利亚 N·盖利 P·丰塔尼利 于 2020-03-16 设计创作，主要内容包括：用于测量物理量的生物医学联结设备(1),包括：管状联结元件(2),其具有定义第一端口(4)以及与第一端口(4)相对的第二端口(5)的至少一连接通道(3),第一端口可连接到处理体液的生物医学设备；传感器装置(7),毗邻第二端口(5),并与连接通道(3)连通,适于检测体液的至少一个物理量特征；以及传感器装置(7)的一个支撑元件(8),与联结元件(2)关联,以关闭第二端口(5)。(Biomedical coupling device (1) for measuring a physical quantity, comprising: a tubular coupling element (2) having at least one connection channel (3) defining a first port (4) connectable to a biomedical device for treating body fluids and a second port (5) opposite the first port (4); a sensor device (7) adjacent to the second port (5) and communicating with the connecting channel (3), adapted to detect at least one physical quantity characteristic of the body fluid; and a support element (8) of the sensor device (7) associated with the coupling element (2) to close the second port (5).)

1. Biomedical coupling device (1) for measuring a physical quantity, characterized in that it comprises:

at least one tubular coupling element (2) having at least one connection channel (3) defining a first port (4) connectable to a biomedical device for treating body fluids and a second port (5) opposite said first port (4);

a sensor device (7) adjacent to said second port (5) and in communication with said connection channel (3), adapted to detect at least one physical quantity characteristic of said body fluid; and

-at least one support element (8) of the sensor device (7) associated with the coupling element (2) to close the second port (5).

2. Device (1) according to claim 1, characterized in that said coupling element (2) comprises a luer-lock connector defined at said first port (4).

3. Device (1) according to claim 2, characterized in that said coupling element (2) comprises a locking means (6) of the rotating collar type, which locks into said biomedical device.

4. Device (1) according to one or more of the preceding claims, characterized by comprising transmission means (10) for transmitting a physical quantity characteristic of said body fluid to said sensor means (7).

5. Device (1) according to one or more of the preceding claims, characterized by the fact that said transmission means (10) are housed in said connection channel (3) and are adapted to interact with said sensor means (7), said connection channel (3) being at least partially engaged by said transmission means (10).

6. Device (1) according to one or more of the preceding claims, characterized by the fact that said sensor means (7) comprise at least a pressure sensor (11) suitable for detecting the pressure of said body fluid.

7. Device (1) according to one or more of the preceding claims, characterized by the fact that said pressure sensor (11) is of the pressure transducer type.

8. Device (1) according to one or more of the preceding claims, characterized by the fact that said transmission means (10) comprise at least an elastically deformable pressure transmission element (12) arranged inside said connection channel (3) so as to cover at least said second port (5).

9. Device (1) according to one or more of the preceding claims, characterized by the fact that said sensor means (7) comprise at least a temperature sensor (13) suitable for detecting the temperature of said body fluid.

10. Device (1) according to claim 9, characterized in that said transmission means (10) comprise at least one temperature transmission element (10) which transmits said body fluid into said temperature sensor (13).

11. The apparatus (1) according to one or more of the preceding claims, characterized in that said transfer means (10) are of the biocompatible gel type.

12. Device (1) according to one or more of the preceding claims, characterized by the fact that said supporting element (8) comprises at least an integrated circuit (9) operatively connected to said sensor means (7) and adapted to transmit the electric pulses generated by said sensor means (7) to a processing unit.

13. Device (1) according to one or more of the preceding claims, characterized by comprising housing means (15) of said supporting element (8).

14. Device (1) according to one or more of the preceding claims, characterized by the fact that it comprises connection means (16) of said circuit (9) which connect it to a processing unit which processes the physical quantities detected.

15. Device (1) according to claim 14, characterized in that said connection means (16) are associated in a removable manner with said electric circuit (9).

Technical Field

The invention relates to a biomedical coupling device for measuring a physical quantity.

Background

It is well known in the biomedical field that devices for treating body fluids, such as oxygenators, centrifugal pumps, etc., are commonly used for extracorporeal circulation treatments of patients.

During the operation of these devices, it is necessary to monitor the pressure of the treated body fluid at the inlet and/or outlet of the device itself in order to check whether it is operating correctly.

For example, in the case of an oxygenator, a pressure differential between the inlet and the outlet exceeding a predetermined value may mean that the oxygenator itself is blocked.

In order to detect the blood pressure at the inlet and/or outlet of such devices, it is common to use a coupling communicating with the relevant inlet and/or outlet conduit, to which a conduit is connected, along which a deformable membrane is arranged, suitable for sending a signal corresponding to the value of the blood pressure contained in the conduit itself.

However, the use of these tubes can lead to clotting of the blood therein, particularly in emergency situations where the patient has not previously received anticoagulant therapy.

Therefore, during patient treatment, the tubing requires frequent cleaning, for example, with saline, to remove the thrombus.

Therefore, the above-mentioned operation is rather complicated, thereby extending the treatment time.

Disclosure of Invention

The main object of the present invention is to devise a biomedical coupling device for measuring a physical quantity which allows to detect the physical quantity characteristic of a body fluid in a biomedical device, eliminating the risks of the known solutions used today.

Another object of the present invention is to devise a biomedical coupling device for measuring physical quantities which can be used effectively and safely even in emergency situations where the patient has not previously been treated with anticoagulants.

Within this aim, a further object of the invention is to eliminate the risk of thrombosis and at the same time to simplify the measurement operations.

Another object of the present invention is to devise a biomedical coupling device for measuring a physical quantity which overcomes the above-mentioned drawbacks of the prior art in a simple, rational, effective and cost-effective manner.

The above object is achieved by a biomedical coupling device for measuring a physical quantity having the features of claim 1.

Drawings

Other characteristics and advantages of the invention will be more apparent in the description of a preferred but not exclusive embodiment of a biomedical coupling device for measuring a physical quantity, illustrated by way of indication and not limitation in the accompanying table of the drawings, in which:

FIG. 1 is an isometric view of a biomedical coupling device for measuring a physical quantity according to the present invention;

FIG. 2 is a side sectional view of the present invention;

FIG. 3 is a cross-sectional isometric view of one embodiment of the present invention;

FIG. 4 is an exploded view of one embodiment of the present invention;

fig. 5 is a view of another embodiment of the present invention.

Detailed Description

With emphasis on these views, reference numeral 1 generally designates a biomedical coupling device for measuring a physical quantity.

A biomedical coupling device 1 for measuring a physical quantity comprises at least one tubular coupling element 2 having at least one connection channel 3 defining a first port 4 connectable to a biomedical device for treating body fluids and adapted to allow body fluids to enter inside the connection channel 3, and a second port 5 opposite the first port 4.

Advantageously, the coupling element 2 comprises a luer lock connector defined at the first port 4, which can connect the biomedical coupling device for measuring physical quantities into any universal standardized biomedical device.

In more detail, the coupling element 2 can be a luer-lock connector with a fixed ring nut or comprise locking means 6 of the rotating collar type, in order to be easily coupled into the relevant biomedical device.

The inventive device 1 further comprises sensor means 7 and at least one support element 8 of the sensor means 7, the sensor means 7 being adapted to detect at least one physical quantity characteristic of the body fluid, the at least one support element 8 being associated with the coupling element 2 to close the second port 5.

Preferably, the support element 8 is slightly sheet-shaped and made of a semiconductor material (in particular a ceramic material) of substantially rectangular shape, one end of which is provided with the sensor device 7.

The support element 8 comprises at least one integrated circuit 9 operatively connected to said sensor means 7 and adapted to transmit the electric pulses generated by said sensor means to a processing unit through electrical connection means 16.

The connection means 16 are associated with the circuit 9 and belong, for example: wire or fiber types.

In the embodiment shown in fig. 5, the connection means 16 are of the fixed type, i.e. connected to the circuit 9 by electric welding.

In an alternative embodiment not shown, the electrical connection means 16 are removable, i.e. can be connected to the circuit 9 by means of a special connector (for example a USB interface, etc.).

In this case, the connecting means 16 can be removed from the circuit 9 and, therefore, also from the supporting element 8, in order to be used on another supporting element 8 for subsequent use.

In particular, the coupling element 2 is locked with the support element 8 in the region delimited by the sensor means 7, and therefore the three are arranged at the point of the second port 5, communicating with the connecting channel 3.

The device 1 also conveniently comprises transmission means 10 for transmitting the characteristic physical quantity to be detected into the sensor means 7.

The transmission means 10 are housed inside the connecting channel 3 and are adapted to interact with the sensor means 7; more specifically, the connecting channel 3 is at least partially engaged by the transmission means.

Thus, the transfer device 10 may only partially occupy the connection channel 3, covering the second port 5, or may occupy the entire volume.

The transfer device 10 also has the function of preventing direct interaction of the body fluid with the sensor device 7, protecting the sensor device from wear and, at the same time, preventing the body fluid from being contaminated by any impurities.

Advantageously, the delivery device 10 is of the biocompatible gel type, which reduces the risk of the delivery device contaminating the body fluids with a view to the health of the patient. It is to be noted that the particular configuration of the device 1 allows a rapid interaction of the body fluid and into the connection channel 3 and the sensor means 7, thus detecting the physical quantity characteristic to be measured immediately and avoiding a prolonged residence of the body fluid in the connection channel 3.

Conveniently, the sensor means 7 comprise a pressure sensor 11, for example of the pressure transducer type, suitable for detecting the pressure of the body fluid. The transmission means 10 comprise at least one elastically deformable pressure transmission element 12, which is arranged in the connecting channel 3 so as to cover at least said second port 5.

In particular, the pressure-transmitting element 12 is made of an elastically deformable material, which can be compressed or stretched in accordance with the pressure 5 of the body fluid, so as to exert a corresponding force on the pressure sensor 11.

In a particular embodiment of the invention, the sensor means 7 comprise at least one temperature sensor 13, adapted to detect the temperature of the body fluid; the transfer device 10 comprises at least one temperature transfer element 14, which transfers the body fluid into the temperature sensor 13.

More specifically, the temperature transmission element 14 is of the type of heat-conducting material, suitable for transmitting heat into the temperature sensor 13.

The device 1 comprises only one or both of the pressure sensor 11 and the temperature sensor 13.

In the latter case, the pressure transmission element 12 and the temperature transmission element 14 may be separate or superposed in a single element made of an elastically deformable, heat-conductive material.

Preferably, the device 1 also has housing means 15 of the support element 8, suitable for protecting the support element, and therefore the circuit 9 and the connection means 16, from the external agent that may be harmful to the operation.

If the connecting means 16 is detachable, it can be removed from the containing means 15 to enable recycling.

The operation of the apparatus 1 is as follows:

the device 1 is connected by means of a coupling element 2 to a biomedical device manifold for the treatment of body fluids, for example: oxygenators or centrifugal pumps.

Upon reaching the branch, the body fluid enters the connecting channel 3, interacting with the transfer means 10, causing the sensor means 7 to detect the characteristic physical quantity to be measured.

Through the connection means 16, electrical pulses are transmitted from the circuit 9 to the processing unit, so that the measured physical quantity is read.

After treatment is complete, the device 1 can be removed from the associated biomedical device for cleaning and sterilization for subsequent use.

In practice it has been found that the invention described above achieves the intended aim. It is particularly emphasized that the biomedical coupling device for measuring a physical quantity according to the invention enables a simple and accurate detection of a characteristic physical quantity of a body fluid, thereby at the same time eliminating the risk of the body fluid residing in the ducts of the known devices.

In fact, the particular configuration of the biomedical coupling device for measuring physical quantities and the transmission means for transmitting the characteristic physical quantity to be detected allow to minimize the amount of body fluid in the connecting channel.

This also makes it possible to avoid complex and frequent washing operations, making it much easier to measure the characteristic physical quantity of interest than with the devices known today.