CN115887876A - Peripheral blood vessel overlength guidable shock wave balloon catheter - Google Patents

Abstract

The invention discloses an ultra-long guideable shock wave balloon catheter for peripheral blood vessels, which comprises a catheter, an inflatable balloon arranged at the distal end of the catheter, and a shock wave generating assembly in which the catheter is located in the cavity of the balloon. The working length is less than 120mm, the catheter is located at the proximal end and the distal end of the shock wave generating assembly, and a developing mark is provided. The shock wave generating assembly is composed of at least two electrode ring groups, and each electrode ring group is provided with at least two electrode rings. The electrode ring group is provided with a wire group, and the proximal end of the wire group extends outside the proximal end of the catheter; when working, each electrode ring group can discharge simultaneously or separately. Compared with the existing technology, by setting multiple sets of electrode ring groups, it is possible to discharge at any position of the balloon, realize shock wave therapy only on the lesion in the blood vessel, and prevent damage to the inner wall of the non-lesion site by multiple discharges , improve treatment effect and operation efficiency, and reduce unnecessary shock wave release.

Description

Peripheral Vascular Ultra-Long Guided Shockwave Balloon Catheter

technical field

The invention relates to a medical device, in particular to an ultra-long guideable shock wave balloon catheter for peripheral blood vessels.

Background technique

In the field of peripheral blood vessels, the length of the existing shock wave balloon catheters is less than 60 mm, and many long-term intravascular calcified lesions cannot be treated with one shock wave guide for all lesions, which leads to multiple shock wave guides being used for treatment Long-term intravascular calcified lesions lead to repeated stimulation of shock waves and continuous blockage at some intravascular treatment sites, which may lead to the risk of spasm at the vascular lesion site and remote vascular ischemia.

Contents of the invention

The purpose of the present invention is to provide an ultra-long guideable shock wave balloon catheter for peripheral blood vessels. The technical problem to be solved is to realize accurate release of the lesion, prevent the inner wall of the non-lesion from being affected by the shock wave, and improve the treatment effect.

In order to solve the above-mentioned problems, the present invention adopts the following technical solutions: a super-long guideable shock wave balloon catheter for peripheral blood vessels, including a catheter, an inflatable balloon arranged at the distal end of the catheter, and a catheter located in the cavity of the balloon The shock wave generating assembly, the working length of the balloon is less than 120 mm, the catheter is located at the proximal end and the distal end of the shock wave generating assembly, and a development mark is set on the shock wave generating assembly. The shock wave generating assembly is composed of at least two electrode ring groups, each electrode ring group At least two electrode rings are arranged in the center, and a wire group is arranged on the electrode ring group, and the proximal end of the wire group extends outside the proximal end of the catheter; when working, each group of electrode ring groups can be discharged simultaneously or separately.

Further, the wire group includes positive wires with the same number of electrode ring groups, and a negative wire, the negative wires pass through each set of electrode ring groups, and the wires of the negative wires are provided with the same number of electrode ring groups. One of the electrode rings is opposite to the first exposed area, the first exposed area exposes the metal wire of the negative lead, each positive lead is opposite to another electrode ring in a group of electrode rings, and the positive lead is connected to the electrode A second exposed area is provided at the position opposite to the rings, and the second exposed area exposes the metal wire of the positive electrode wire. A connecting wire is also provided between the electrode rings in each electrode ring group, and a connecting wire is provided at a position opposite to the electrode ring. There is a third exposed area, and the third exposed area exposes the metal wires connecting the wires, and there are discharge gaps between the first exposed area, the second exposed area, the third exposed area and the electrode ring.

Further, the electrode ring is provided with electrode ring through holes penetrating through the ring walls on opposite sides of the electrode ring, and the first exposed area, the second exposed area, and the third exposed area are respectively opposite to the electrode ring through holes at corresponding positions, The electrode ring through holes of two adjacent electrode ring groups are arranged in a staggered position, and the positions of the electrode ring through holes on the electrode rings in each electrode ring group are the same.

Further, the catheter includes an inner tube and an outer tube, the inner tube and the outer tube are arranged coaxially, a filling lumen is arranged between the outer tube and the inner tube, and the proximal end of the balloon is connected and fixed to the distal end of the outer tube to Make the cavity of the balloon communicate with the filling cavity, the distal end of the inner tube passes through the cavity of the balloon, and protrudes out of the distal end of the balloon, and the distal end of the balloon is connected and fixed to the outer wall of the distal end of the inner tube .

Further, insulators are respectively provided on the inner tube and at the position of the electrode ring group.

Further, the electrode rings in each electrode ring group are arranged equidistantly.

Further, the distance between two adjacent electrode rings in each electrode ring group is 8.5-9 mm.

Compared with the prior art, the present invention sets multiple electrode ring groups, each electrode ring group can be discharged simultaneously or separately, so that discharge can be performed at any position of the balloon, and shock wave therapy can only be performed on the lesion in the blood vessel , to prevent multiple discharges from causing damage to the inner wall of non-lesional areas, improve treatment effects and surgical efficiency, and reduce unnecessary shock wave release.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the balloon part of the present invention.

Fig. 2 is a schematic diagram of the present invention in use.

Fig. 3 is a schematic diagram of the discharge of the electrode ring group in a certain area of the present invention.

Fig. 4 is a schematic structural view of the electrode ring set of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

In the present invention, the distal end refers to the end away from the operator; the proximal end refers to the end close to the operator.

The improvement of the present invention is the structure of the distal balloon and the electrode ring in the shock wave balloon catheter, and the rest of the structure is the same as that of the prior art, and will not be described in detail here.

As shown in Figure 1, only the improvement of the present invention is shown in the figure, and the structural parts of the rest of the prior art are not shown in the figure. The present invention discloses a super-long guideable shock wave balloon catheter for peripheral blood vessels, including Catheter 1, an inflatable balloon 2 arranged at the distal end of the catheter 1, and a shock wave generating component 3 in which the catheter 1 is located in the cavity of the balloon 2, the balloon 2 is flexible, and the working length of the balloon 2 is less than 120mm , the catheter 1 is located at the proximal and distal positions of the shock wave generating assembly 3 and is provided with a developing mark 7. In the present invention, the shock wave generating assembly 3 is composed of at least two electrode ring groups 4, and each electrode ring group 4 is provided with At least two electrode rings 41, the electrode ring group 4 is provided with a wire group 5, the proximal end of the wire group 5 extends outside the proximal end of the catheter 1 and is electrically connected to an external high-voltage pulse generator (not shown in the figure); When working, each group of electrode ring groups 4 can be discharged simultaneously or separately, so as to realize shock wave therapy only on the lesion in the blood vessel, prevent multiple discharges from causing damage to the inner wall of the non-lesion site, improve the treatment effect, and improve the operation efficiency. Efficiency, reduce unnecessary shock wave release, and protect patients to the greatest extent.

In the present invention, the lead group 5 includes positive lead wires 51 with the same number as the electrode ring group 4 groups, and a negative lead lead 52. The negative lead lead 52 passes through each set of electrode ring sets 4 and is arranged on the leads of the negative lead lead 52. There is a first exposed area 521 opposite to one of the electrode rings 41 in each electrode ring group 4. The first exposed area 521 exposes the metal wire of the negative electrode lead 52, and each positive electrode lead 51 is connected with a set of electrode ring groups respectively. The other electrode ring 41 in 4 is opposite, and a second exposed area 511 is provided at the position where the positive electrode lead 51 is opposite to the electrode ring 41, and the second exposed area 511 exposes the metal wire of the positive electrode lead 51, and each group of electrode ring groups 4 A connecting wire 53 is also provided between the electrode rings 41, and a third exposed area 531 is arranged at the position opposite to the electrode ring 41 of the connecting wire 53. The third exposed area 531 exposes the metal wire of the connecting wire 53, and the first exposed area 521, the second exposed area 511, the third exposed area 531 and the electrode ring 41 are all provided with a discharge gap 42, and the proximal ends of the positive lead wire 51 and the negative lead lead 52 are respectively electrically connected to the positive pole and the negative pole of the high voltage pulse generator.

As shown in FIG. 1 , the electrode ring 41 is provided with electrode ring through holes 411 penetrating through the ring walls on opposite sides of the electrode ring 41. The first exposed area 521, the second exposed area 511, and the third exposed area 531 are respectively connected to the corresponding positions The electrode ring through holes 411 are opposite to each other, and the electrode ring through holes 411 of two adjacent electrode ring groups 4 are staggered, and the positions of the electrode ring through holes 411 on the electrode rings 41 in each electrode ring group 4 are the same.

As shown in Figure 1, the catheter 1 includes an inner tube 11 and an outer tube 12, the inner tube 11 and the outer tube 12 are arranged coaxially, a filling cavity 13 is arranged between the outer tube 12 and the inner tube 11, and the proximal end of the balloon 2 It is connected and fixed with the distal end of the outer tube 12 so that the cavity of the balloon 2 communicates with the filling cavity 13, and the distal end of the inner tube 11 passes through the cavity of the balloon 2 and extends to the distal end of the balloon 2 In addition, the distal end of the balloon 2 is connected and fixed to the distal outer wall of the inner tube 11, and the lumen of the inner tube 11 is used to pass through a guide wire.

Insulators 6 are provided on the inner tube 11 at positions of the electrode ring set 4 to isolate the inner tube 11 from the wire set 5 and the connecting wires 53 . In the present invention, glue is dispensed at intervals between the electrode ring set 4 and the insulator 6, and the electrode ring set 4 and the insulator 6 are pasted and fixed to form a distance.

The wire set 5 and the connecting wires 53 can be arranged along the tube wall of the inner tube 11 , and corresponding grooves can also be set on the tube wall of the inner tube 11 to place the wire set 5 and the connecting wires 53 in the grooves.

As shown in FIG. 1 , as an embodiment of the present invention, five sets of electrode ring sets 4 are provided, and the five sets of electrode ring sets 4 are arranged at equidistant intervals, and each set of electrode ring sets 4 is provided with two electrode rings 41, The two electrode rings 41 are equidistantly arranged at intervals of 8.5-9mm.

As shown in Fig. 2 and Fig. 3, when in use, the balloon 2 is sent to the blood vessel of the lesion, and one or more groups of electrode ring groups 4 corresponding to it are opened according to the location of the lesion, so that targeted Multiple discharges are performed on the diseased part to achieve the therapeutic effect. Since there is no discharge in the non-lesional part, it will not cause damage to the blood vessel wall in the non-lesional part.

The present invention realizes that each group of electrode ring groups can be discharged simultaneously or separately, and can be discharged at any position of the balloon, so as to realize shock wave therapy only on the diseased part in the blood vessel, and prevent damage to the inner wall of the non-pathological part during multiple discharges. Damage, reducing unnecessary shock wave release.

Claims (7)

1. A super-long guideable shock wave balloon catheter for peripheral blood vessels, comprising a catheter (1), an inflatable balloon (2) arranged at the distal end of the catheter (1) and a catheter (1) positioned at the balloon (2) The shock wave generating assembly (3) in the cavity is characterized in that: the working length of the balloon (2) is less than 120mm, and the catheter (1) is located at the proximal end and the distal end of the shock wave generating assembly (3). The development mark (7), the shock wave generating assembly (3) is composed of at least two electrode ring groups (4), each electrode ring group (4) is provided with at least two electrode rings (41), the electrode ring group (4) A wire group (5) is arranged on the top, and the proximal end of the wire group (5) extends to the outside of the proximal end of the catheter (1); when working, each group of electrode ring groups (4) can discharge simultaneously or separately. 2. The ultra-long guideable shock wave balloon catheter for peripheral blood vessels according to claim 1, characterized in that: the lead wire group (5) includes positive electrode wires (51) with the same number as the electrode ring group (4), and A negative wire (52), the negative wire (52) passes through each group of electrode ring groups (4), and is provided with one of the electrodes in each group of electrode ring groups (4) on the wire of the negative wire (52). Ring (41) relative to The first exposed area (521), the first exposed area (521) exposes the metal wire of the negative electrode lead (52), and each positive electrode lead (51) is connected with another electrode ring ( 41) is opposite, and a second exposed area (511) is provided at the position where the positive electrode lead (51) is opposite to the electrode ring (41), and the second exposed area (511) exposes the metal wire of the positive electrode lead (51). A connecting wire (53) is also provided between the electrode rings (41) in the electrode ring group (4), and a third exposed area (531) is arranged at the position opposite to the electrode ring (41) of the connecting wire (53). The exposed area (531) exposes the metal wire connecting the wire (53), and the first exposed area (521), the second exposed area (511), the third exposed area (531) and the electrode ring (41) are all provided with Discharge gap (42). 3. The ultra-long guideable shock wave balloon catheter for peripheral blood vessels according to claim 2, characterized in that: the electrode ring (41) is provided with electrode ring through holes penetrating through the ring walls on opposite sides of the electrode ring (41) (411), the first exposed area (521), the second exposed area (511), and the third exposed area (531) are respectively opposite to the electrode ring through holes (411) at the corresponding positions, and two adjacent electrode ring groups ( 4) The electrode ring through-holes (411) are misplaced, and the positions of the electrode ring through-holes (411) on the electrode rings (41) in each electrode ring group (4) are the same. 4. The ultra-long guideable shock wave balloon catheter for peripheral blood vessels according to claim 3, characterized in that: the catheter (1) includes an inner tube (11) and an outer tube (12), and the inner tube (11) and the outer tube The tube (12) is arranged coaxially, a filling cavity (13) is set between the outer tube (12) and the inner tube (11), the proximal end of the balloon (2) is connected and fixed with the distal end of the outer tube (12), To make the cavity of the balloon (2) communicate with the filling cavity (13), the distal end of the inner tube (11) passes through the cavity of the balloon (2) and protrudes to the distal end of the balloon (2) In addition, the distal end of the balloon (2) is connected and fixed with the distal outer wall of the inner tube (11). 5. The ultra-long guideable shock wave balloon catheter for peripheral blood vessels according to claim 4, characterized in that: the inner tube (11) and the position of the electrode ring group (4) are respectively provided with insulators (6 ). 6. The ultra-long guideable shock wave balloon catheter for peripheral blood vessels according to any one of claims 1-5, characterized in that: the electrode rings (41) in each electrode ring group (4) are arranged at equidistant intervals. 7. The ultra-long guideable shock wave balloon catheter for peripheral blood vessels according to claim 6, characterized in that the distance between two adjacent electrode rings (41) in each electrode ring group (4) is 8.5-9 mm.

Images