GB2586626A

GB2586626A - Combined balloon and stent PTCA catheter

Info

Publication number: GB2586626A
Application number: GB1912427.0A
Authority: GB
Inventors: Rebecca Louise Radomski Anita; Kadhim Hasan
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2021-03-03
Anticipated expiration: 2039-08-29
Also published as: GB2586626B; GB201912427D0

Abstract

A combined stent and balloon percutaneous transluminal coronary angioplasty (ptca) dilation catheter, for coronary and peripheral vascular intervention, comprises a hub, a low-profile distal tip 8 and a shaft 3 that has two sequential balloons 6,7; a stent 5 mounted on the more proximal balloon 6. An inflation/deflation device can be attached to either a first hub port 1, to deliver a contrast medium to inflate the distal balloon 7 for pre or post-dilation, or to a side hub port 2, to inflate and deploy the stent. Each port is fluidically connected to the respective balloons via an independent contrast medium channel/lumen (9,10, Fig 3).

Description

DESCRIPTION

This invention relates to a device which is a combined stent and balloon percutaneous transiurnina I coronary angioplasty (ptca) dilation catheter for coronary angioplasty and can also be used for peripheral vascular angioplasty interventions.

When performing percutaneous translumina I coronary angioplasty,by either the femoral or radial access route, the procedure involves deploying a balloon catheter over an intracoronary guidewire and inflating it to open the lesion prior deploying a stent. Once this balloon catheter is removed, the stent catheter is then fed on to the wire and using the contrast medium inflation device, the stent id deployed.

A large number of cases are now performed via the radial access route. One of the complications of which is spasm through catheter movement. Further risks and complications involved with coronary intervention cases are radiation exposure for the patients and the operator, as well as having to open numerous pieces of equipment which can prove costly. To overcome this problem, this invention aims to minimise procedural time, minimise exposure to procedural radiation due to shorter procedure time and provide a single ptca catheter that incorporates both balloon and stent. The catheter is not designed to he used in very distal vessel lesions.

The combined stent and balloon catheter has been designed such that only one piece of equipment is necessary to use in interventional procedures. The operator will advance the dilation balloon to the lesion and inflate to open the lesion. After expansion, the catheter can be advanced forward: moving the balloon past the lesion and allowing the stent placement to occur. Once deployed, the operator may choose to re-inflate the balloon once more for post dilation purposes or remove the catheter entirely.

The invention will now be described solely by way of example and with reference to the accompanying drawings in which: Figure 1 shows the entire stent and balloon catheter.

Figure 2 shows the outside appearance of the distal portion of the combined stent and balloon catheter.

Figure 3 shows a magnified view of the distal portion of the combined stent and balloon catheter to show the inside workings of the contrast medium channels.

Figure 4 shows a magnified view of the proximal portion of the combined stent and balloon catheter to show the inside workings of the contrast medium channels.

Figure 5 shows a co-axial side view of the proximal combined stent and balloon catheter to illustrate the entry ports.

Figure 1 shows the appearance of the monorail catheter in its entirety. It consists of a dual lumen hub (1,2) connected via a shaft (3) to the stent (5) and balloon sections (6,7) with the wire exit point (4). The distal tip (8) is designed to be low profile to facilitate passing the catheter through the lesion.

Figure 2 shows the distal half of the catheter. The dilation balloon (7) being the most distal with the stent (5) and its deployment balloon (6) proximal, The wire exit point (4) is shown proximal to this.

Figure 3 shows the distal half of the catheter in a more magnified manner such that the contrast medium channels (9,10) are highlighted to demonstrate their respective lumens into the balloon (7) and the stent balloon (6) independently.

Figure 4 shows the proximal part of the catheter. The hub comprises of two entry points (1, 2) which subsequently are connected to the two contrast medium charnels (9, 10). The coaxial lumen (1) will be used for the balloon channel (9) for dilation with the side port (2) being used to introduce the contrast medium via.a second independent channel (10) to inflate and deploy the stent (5) and its balloon (6).

Figure 5 shows a side eye view of the proximal hub -looking down the coaxial shaft (1) connection that will be used for balloon inflation and the side port entry connection (2) These are the connections to which the contrast medium in deflator will connect.

Claims

CLAIMS1. Combined stent and balloon percutaneous transluminal coronary angioplasty dilation catheter for coronary and adapted for use within peripheral vascular interventions.
2. Combined stent and balloon percutaneous transiuminal coronary angioplasty dilation catheter according to claim 1 in which this design can be adapted for use within peripheral vascular interventions.
3. Combined stent and balloon percutaneous transluminal coronary angioplasty dilation catheter according to claim 1 in which this design promotes the use of a single catheter rather that two separate catheters (balloon catheter followed by stent catheter) during either coronary or peripheral vascular interventions.
4. Combined stent and balloon percutaneous transluminal coronary angioplasty dilation catheter according to claim lin which a monorail system is used for deployment with a guidewire.
5. Combined stent and balloon percutaneous transluminal coronary angioplasty dilation catheter according to claim 1 in which two independent contrast medium channels will facilitate the inflation of either the balloon or the stent.