JPS6148346A - Balloon apparatus for main artery - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an intra-aortic balloon device, and more particularly, the present invention relates to an intra-aortic balloon device, and in particular, the balloon device is wound up by twisting the balloon, and the balloon device is percutaneously rolled up. The present invention relates to a wearable intra-aortic balloon device.

(Prior art) Intra-aortic balloon devices, for example, insert a balloon from the femoral artery and place it in the descending thoracic aorta, and deflate the balloon when the left ventricle contracts, based on the principle of counterpulsation. The purpose is to reduce the load on the left ventricle, and conversely, when the left ventricle expands, the balloon is expanded to increase aortic pressure and increase coronary blood flow.

Conventional intra-aortic balloon devices that can be inserted percutaneously into the aorta from the thigh are disclosed in, for example, JP-A-57-1.
There is one shown in No. 15258. This involves sealingly fixing a balloon to one end of the catheter, and disposing a tubular member inside the catheter from the other end of the balloon. A wire is provided to be removably inserted into the tubular member. According to this, by inserting the wire into the tubular member, the balloon can be wound around the tubular member and unwound. Therefore, when inserting a catheter, the balloon is wrapped around a tubular member and inserted.
After the balloon is inserted into position, the balloon can be unwound from the tubular member. Furthermore, when removing the catheter, the balloon can be wrapped around the tubular member again and removed from the artery.

An example of a drive device for driving this intra-aortic balloon device is shown in US Pat. No. 4,016,871. This driving device supplies helium gas to the balloon at a predetermined timing to expand and deflate the balloon.

This predetermined timing of countervalsation is determined by the patient's electrocardiogram or arterial pressure.

(Problems to be Solved by the Invention) Conventional intra-aortic balloon devices measure the patient's electrocardiogram or arterial pressure as described above, and determine the timing of counterpulsation based on this. That is, a balloon must be inserted and attached to the patient through the femoral artery, and a device for measuring an electrocardiogram or arterial pressure (for example, an electrode or a blood pressure monitor) must be attached to the patient.

For this reason, it takes time to attach the intra-aortic balloon device to a patient, which poses a problem when an emergency is required.

Therefore, an object of the present invention is to provide an electrocardiogram or an arterial pressure measuring device integrated with the balloon to facilitate the installation of an intra-aortic balloon device.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a hollow catheter, an inflatable and deflated balloon fixed to one end of the catheter, and a balloon fixed to the other end of the catheter. a terminal member fixed to the other end of the catheter for supplying and discharging gas into the balloon; a terminal member disposed inside the balloon and the catheter and having one end fixed to the plug; In an intra-aortic balloon device comprising a support member whose end protrudes outward from the terminal member, and a knob member fixed to the support member, a detection element is disposed within the plug, and the support member and the grip member are fixed to the support member. A lead wire of the detection element is integrally formed.

(Function) According to this, by fixing the terminal member and rotating the grip member, the balloon can be wound around the support member or unwound. Therefore, the balloon can be inserted percutaneously into the aorta, and since a detection element is provided in the plug placed at the tip of the balloon, the timing of counterpulsation can be determined at the same time by attaching the balloon to the patient. It is possible to detect signals for

℃ Example] An example of the present invention will be described below based on the drawings. 1st
This will be explained using figures. The intra-aortic balloon device 10 includes a hollow catheter 11 made of a polyurethane antithrombotic agent or a member treated with the same.
A balloon 12 made of a polyurethane antithrombotic agent or a member treated with the same is fixed to one end of the balloon. The other end of the catheter 11 is fixed to a connector 13.

A plug 14 is fixed to the other end of the balloon 12, and a support member 15 is formed integrally with the plug 14. Further, the connector 13 is fitted onto the terminal member 16. The terminal member 16 is provided with a connector 17 that is supplied with gas from a drive device that drives the intra-aortic balloon device.

Support member 15 supports balloon 12 and catheter 11
It penetrates inside. A seal member 18 is adhered to a part of this support member 15.

The sealing member 18 is rotatably mounted in the protruding hole 19 of the connector 17 and sealed by an O-ring 20.

A knob member 21 is fixed to a protruding portion of the seal member 18 protruding to the outside of the terminal member 16 with a screw 29. As a result, when the knob member 21 is rotated relative to the terminal member 16, the seal member 18 and the support member 15 rotate together with the knob member 17.

Next, inside the plug 14, a pressure transducer 22 is disposed integrally with the plug 14. Plug 14
A metal block 23 is arranged inside the metal block 23, and a pressure transducer 22 is fixed to this metal block 23. The tip of the plug 14 and the pressure detection hole 24 formed in the plug 14 are molded with a silicone agent 25. A hole 26 is provided in the metal block 23, and the pressure transducer 22 is inserted into the hole 26 on the back side of the pressure transducer 22.
It is arranged so that it faces. Furthermore, this hole 26 communicates with the inside of the support member 15 via the back surface of the metal block 23. Therefore, the pressure transducer 22
The back surface of the support member 15 communicates with the outside through the inside thereof. This maintains the pressure constant by communicating the back side of the pressure transducer 22 with the outside.
It extends outward through the inside of the support member 15, and a signal connector 28 is connected to its end.

The above configuration is used as follows.

The balloon 12 is wrapped around the support member 15 by fixing the terminal member 16 and rotating the grip member 21. Therefore, the balloon 12 can be inserted transcutaneously into the femoral artery from the thigh using a predetermined instrument. After inserting the balloon 12 to a predetermined position, the terminal member 16 is fixed again and the grip member 2
1 by rotating the balloon 12 in the opposite direction
You can rewind from 5. Therefore, by connecting the connector 17 to the balloon drive device and supplying gas into the balloon 12, the balloon 12 can be expanded and deflated. At this time, if the signal connector 28 is connected to the arterial pressure input terminal of the balloon drive device, the arterial pressure in the aorta can be measured from the pressure transducer 22 at the tip of the balloon 12. Based on this signal, counter valsation can be performed. The timing is determined to inflate and deflate the balloon 12.

To remove the balloon device 10 from within the artery, the terminal member 16 may be fixed and the grip member 21 may be rotated to wrap it around the support member 15 and then removed.

Next, a second embodiment of the present invention will be described with reference to FIGS. 2 and 3. This embodiment differs from the previous embodiment only in the attachment of the plug, support member, and pressure transducer, so only this portion will be explained and the others will be omitted.

In this example, as shown in FIG. 2, the plug 30 and the support member 31 are formed separately.

A metal block 32 is disposed inside the plug 30, and a pressure transducer 2 is attached to the metal block 32.
2 is fixed. A hole 33 is formed in the metal block 32 as in the first embodiment, but in this example, the hole 33 is formed in the metal block 32.
communicates with an atmospheric chamber 34 formed on the back surface of the metal block 32.

A steel wire 35 is fixed to the plug 30 with one end bent. The other end of the plug 30 passes through the inside of the balloon 12 and catheter 11 and is fixed to a grip member 36 by bending one end thereof. The lead cotton 27 of the pressure transducer 22 is coated integrally with the steel wire 35 with a silicone agent. This silicone coating 37
protrudes outward from the knob member 36 and is connected to the signal connector 28 at its end.

This steel wire 35. The lead cotton 27 and the covering 37 bottom the support member 31.

This second embodiment is also used in the same manner as the first embodiment.

Next, a third embodiment of the present invention will be described with reference to FIGS. 4 and 5. In this embodiment, electrodes are placed at the tip of the balloon to detect an electrocardiogram.

This example differs from the previous example in that it does not use a plug, but only the support member and electrode attachment are different from the previous example, so only this part will be explained and the rest will be omitted. Omitted.

In this embodiment, the support member 40 is formed by coating the lead wire 42 of the electrode 41 with a coating 43 of silicone material. One end of the balloon 12 is fixed to this support member 40.

``The other end of the support member 40 passes through the inside of the balloon 12 and catheter 11, as in the previous embodiment. A seal member 45 fixed to a part of the support member 40 is fixed to the knob member 44 with a screw 46. Furthermore, a signal connector is connected to the tip of the support member 40 as in the previous embodiment.

In this embodiment, an electrocardiographic signal is detected by the electrode 41, and the electrocardiographic signal is manually inputted to the balloon driving device, and the timing of counterpulsation is determined based on the electrocardiographic signal.
Expand and contract 2.

Other uses are the same as in the previous embodiment.

〔Effect of the invention〕

As described above, according to the present invention, by fixing the terminal member and rotating the grip member, the balloon can be wound around the support member and unwound. Therefore, the balloon can be inserted percutaneously into the aorta, and since a detection element is provided in the plug placed at the tip of the balloon, the timing of countervalsation can be determined at the same time by attaching the balloon to the patient. signals can be detected.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of the invention, FIGS. 2 and 3 are sectional views showing a second embodiment of the invention, and FIGS. 4 and 5 are sectional views showing a third embodiment of the invention. It is a sectional view showing an example.

Claims (1)

Claims: (1) A hollow catheter, an inflatable and deflated balloon fixed to one end of the catheter, a plug fixed to the other end of the balloon, and a plug fixed to the other end of the catheter. a terminal member for supplying and discharging gas into the balloon; and a support member disposed inside the balloon and the catheter, having one end fixed to the plug and the other end protruding outward from the terminal member. , an intra-aortic balloon device comprising a grip member fixed to the support member, wherein a detection element is disposed within the plug, and a lead wire for the detection element is formed integrally with the support member; Internal balloon device. (2) The intra-aortic balloon device according to claim 1, wherein the detection element is a pressure transducer that detects pressure. (3) The intra-aortic balloon device according to claim 2, wherein the support member is a hollow cylindrical body, and the lead wire is passed through the inside of the support member. (4) The support member is made of steel. The intra-aortic balloon device according to claim 2, wherein the wire and the lead wire are integrally covered with a silicone member. (5) The intra-aortic balloon device according to claim 1, wherein the detection element is an electrode that detects voltage.