Multi-balloon interventional catheter

Abstract

The invention relates to the technical field of medical instruments, and discloses a multi-balloon intervention catheter which comprises a catheter body and balloons, the front end of the catheter body is a guide end, the rear end of the catheter body is connected with a connector, the number of the balloons is multiple, and the multiple balloons are arranged on the catheter body in the axial direction and communicate with the catheter body; the adjusting assembly comprises an adjusting block and an adjusting part, the adjusting block is installed on the catheter body, the balloons are communicated with the adjusting block through the catheter body, the adjusting part is arranged on the adjusting block, and expansion and contraction of the balloons are controlled through the adjusting part; the stabilizing assembly comprises a plurality of stabilizing pieces, the stabilizing pieces are fixedly connected to the catheter body in the axial direction and correspond to the balloons one to one, the stabilizing pieces make contact with the balloons, and the balloons make contact with the treatment part through the stabilizing pieces. Different operation requirements are met, meanwhile, adjustment is convenient and fast, operation efficiency is improved, catheter intervention stability is guaranteed, catheter displacement and other conditions are avoided, and stability, safety and high efficiency of an operation are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a multi-balloon interventional catheter. Background Art

[0002] At present, there are three main ways to treat arterial stenosis: conservative drug treatment, surgical operation and interventional treatment. Conservative drug treatment has the disadvantages of long cycle and poor efficacy. Traditional surgical operations are traumatic, have many complications, and have long hospitalization periods, which are difficult for patients to bear. Interventional treatment (arterial balloon dilatation and stent implantation) is a diagnostic and therapeutic operation performed by using a series of interventional instruments and materials and modern digital diagnostic and treatment equipment. Compared with traditional surgical operations, only local anesthesia is required, and a small incision of 1-2 mm is required. It has the advantages of less bleeding, less trauma, fewer complications, fast postoperative recovery, and safety and reliability, which can greatly reduce the pain suffered by patients. Moreover, balloon dilatation catheter treatment is repeatable. When vascular restenosis occurs, it can be expanded again by minimally invasive methods. In addition, even if the operation fails, it has no significant effect on further stent or vascular bypass surgery. Therefore, interventional treatment has gradually become the preferred means of treating arterial stenosis with its advantages of minimally invasive, repeatable operation and good efficacy.

[0003] With regard to multi-balloon interventional catheters, due to the large number of balloons, it is necessary to individually control some of the balloons according to different usage requirements. The prior art multi-balloon interventional catheters usually control multiple balloons as a whole and do not have the function of real-time regulation, and thus cannot be adapted to different usage scenarios. In addition, after the balloon is inflated, the curved surface of the prior art may easily cause misalignment and movement with the contact part, thereby affecting the overall accuracy, safety and efficiency of the operation.

[0004] Therefore, there is an urgent need for a multi-balloon interventional catheter to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-balloon interventional catheter to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a multi-balloon interventional catheter, comprising a catheter body and a balloon, wherein the front end of the catheter body is a guide end, the rear end of the catheter body is connected to a connector, and the balloons are multiple, and the multiple balloons are axially arranged on the catheter body and are respectively connected to the catheter body;

[0007] An adjustment component, comprising an adjustment block and an adjustment part, wherein the adjustment block is mounted on the catheter body, the balloon is connected to the adjustment block through the catheter body, and the adjustment part is arranged on the adjustment block, and the expansion and contraction of the plurality of balloons are controlled by the adjustment part;

[0008] The stabilizing component includes a plurality of stabilizing members, which are fixedly connected to the catheter body along the axial direction and correspond to the plurality of balloons one by one respectively. The stabilizing members are arranged in contact with the balloons, and the balloons are in contact with the treatment site through the stabilizing members.

[0009] According to a multi-balloon interventional catheter provided by the present invention, a groove is provided at the top of the adjustment block, the adjustment part includes an adjustment disk, the adjustment disk is rotatably connected in the groove, a plurality of delivery grooves are provided on the adjustment block at equal intervals along the axial direction, a plurality of through holes are provided at equal intervals along the circumferential direction at the bottom end of the groove, a plurality of the delivery grooves and a plurality of the through holes correspond one to one, a plurality of the through holes are respectively connected with the catheter body, the adjustment block is connected with an external delivery device through a pipeline, the pipeline is connected with any of the delivery grooves, a rotating knob is provided on the adjustment block, an adjusting member is provided on the rotating knob, and the adjusting member is used to control the opening / closing of a plurality of the delivery grooves.

[0010] According to a multi-balloon interventional catheter provided by the present invention, a cavity is opened in the middle of the adjustment disk, and several of the delivery slots are respectively connected to the cavity. The adjustment member includes several blocking plates, and several sliding grooves are opened circumferentially on the rotating knob. Several of the blocking plates are respectively slidably connected in the sliding grooves through limiting members, and the bottom end of the blocking plate passes through the adjustment disk and extends into the cavity. The delivery slot and the cavity are sealed and separated by the blocking plate.

[0011] According to a multi-balloon interventional catheter provided by the present invention, a plurality of circular holes are axially opened at the top of the rotating knob, the circular holes are connected to the slide groove, the limiting member includes a connecting rod slidably connected to the circular hole, the bottom end of the connecting rod extends into the slide groove and is fixedly connected to the top of the blocking plate, a clamping groove is opened on the inner side wall of the circular hole, a clamping block is connected to the connecting rod via a spring, the clamping block is clamped with the clamping groove, and the top end of the connecting rod extends out of the circular hole and is located outside the rotating knob.

[0012] According to a multi-balloon interventional catheter provided by the present invention, the stabilizing member includes a stabilizing cover fixedly connected to the catheter body, the stabilizing cover covers the outer surface of the balloon, and the stabilizing cover is arranged in contact with the balloon when the balloon is expanded / contracted.

[0013] According to a multi-balloon interventional catheter provided by the present invention, the shape of the stabilizing cover is one of a mesh shape and a grid shape.

[0014] According to a multi-balloon interventional catheter provided by the present invention, a clamping groove is opened on the inner wall of the cavity, a sealing cover is fixedly connected to the top of the clamping groove, and the sealing cover extends into the clamping groove through the blocking plate.

[0015] According to a multi-balloon interventional catheter provided by the present invention, the balloon, the stabilizing cover and the sealing cover are all made of flexible and telescopic materials.

[0016] According to a multi-balloon interventional catheter provided by the present invention, a pleated layer is provided on the outer side wall of the balloon.

[0017] According to a multi-balloon interventional catheter provided by the present invention, a plurality of delivery channels are opened in the catheter body, one end of the plurality of delivery channels is respectively connected to the plurality of balloons, and the other end of the plurality of delivery channels is respectively connected to the plurality of through holes.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects:

[0019] The present invention provides a multi-balloon interventional catheter, which has several balloons. During the operation, the adjustment unit is used to control the contraction or expansion of the several balloons, and the adjustment can be performed according to different situations, such as the control of a single balloon, the control of several balloons, etc., so as to meet different surgical situations, and at the same time, it is easy to adjust and improve the surgical efficiency. When the balloon is expanded, the stable contact between the balloon and the intraoperative part is improved by the provided stabilizing member, so as to ensure the stability of the catheter intervention and avoid its sliding and dislocation. The present application meets different surgical needs, and at the same time, it is convenient to adjust, improves the surgical efficiency, ensures the stability of the catheter intervention, avoids the situation of catheter displacement, and ensures the stability, safety and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the regulating component of the present invention;

[0023] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle part;

[0024] Figure 4 For the present invention Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 5 This is a schematic diagram of the structure of the adjustment disk of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the stable cover of the present invention;

[0027] Figure 7 It is a schematic diagram of the balloon inflation and the stabilizing cover expansion of the present invention;

[0028] Figure 8 This is a schematic diagram of the fold layer structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the limiter of the present invention;

[0030] Among them, 1. catheter body; 2. balloon; 3. connector; 4. adjustment block; 5. adjustment disk; 6. groove; 7. delivery slot; 8. through hole; 9. pipeline; 10. rotary knob; 11. cavity; 12. blocking plate; 13. slide groove; 14. round hole; 15. connecting rod; 16. slot; 17. spring; 18. block; 19. stabilizing cover; 20. snap groove; 21. sealing cover; 22. pleated layer; 23. delivery channel; 24. broken line groove; 25. inclined protrusion. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1-Figure 9 The present invention provides a multi-balloon interventional catheter, comprising a catheter body 1 and a balloon 2, wherein the front end of the catheter body 1 is a guide end, the rear end of the catheter body 1 is connected to a connector 3, and there are a plurality of balloons 2, which are axially arranged on the catheter body 1 and are respectively connected to the catheter body 1;

[0034] The regulating assembly includes a regulating block 4 and a regulating part. The regulating block 4 is mounted on the catheter body 1. The balloons 2 are connected to the regulating block 4 through the catheter body 1. The regulating part is arranged on the regulating block 4. The expansion and contraction of the plurality of balloons 2 are controlled by the regulating part.

[0035] The stabilizing component includes a plurality of stabilizing members, which are fixedly connected to the catheter body 1 along the axial direction and correspond to the plurality of balloons 2 one by one, and the stabilizing members are arranged in contact with the balloons 2, and the balloons 2 are in contact with the treatment site through the stabilizing members.

[0036] Specifically, there are several balloons 2, and during the operation, the contraction or expansion of the several balloons 2 is controlled by the set adjustment unit, and can be adjusted according to different situations, such as the control of a single balloon 2, the control of several balloons 2, etc., so as to meet different surgical situations, and at the same time facilitate adjustment to improve surgical efficiency. When the balloon 2 is inflated, the set stabilizing member is used to improve the stable contact between the balloon 2 and the intraoperative site, thereby ensuring the stability of the catheter intervention and avoiding sliding and dislocation.

[0037] As an optional embodiment, a groove 6 is provided at the top of the adjusting block 4, and the adjusting part includes an adjusting disk 5, which is rotatably connected in the groove 6. A plurality of conveying grooves 7 are provided on the adjusting block 4 at equal intervals along the axial direction, and a plurality of through holes 8 are provided at equal intervals along the circumferential direction at the bottom end of the groove 6. The plurality of conveying grooves 7 correspond to the plurality of through holes 8 one by one, and the plurality of through holes 8 are respectively connected to the catheter body 1. The adjusting block 4 is connected to an external conveying device through a pipe 9, and the pipe 9 is connected to any conveying groove 7. A rotating knob 10 is provided on the adjusting block 4, and an adjusting member is provided on the rotating knob 10. The adjusting member is used to control the opening / closing of the plurality of conveying grooves 7.

[0038] In one embodiment of the present invention, referring to Figure 2 The control of the plurality of balloons 2 is achieved through the setting of the adjustment disk 5, and the adjustment is convenient to meet different surgical requirements and improve the surgical efficiency.

[0039] As an optional embodiment, a cavity 11 is opened in the middle of the adjusting disk 5, and a plurality of conveying grooves 7 are respectively connected to the cavity 11. The adjusting member includes a plurality of blocking plates 12. A plurality of sliding grooves 13 are opened circumferentially on the rotating knob 10. The plurality of blocking plates 12 are respectively slidably connected in the sliding grooves 13 through limiting members, and the bottom ends of the blocking plates 12 penetrate the adjusting disk 5 and extend into the cavity 11. The conveying grooves 7 and the cavity 11 are sealed and separated by the blocking plates 12.

[0040] In one embodiment of the present invention, referring to Figure 2 Several conveying slots 7 are connected with the cavity 11. According to different usage conditions, the sealing opening of the corresponding conveying slots 7 is realized by setting the blocking plate 12, so as to realize the control of a single balloon 2 among the several balloons 2, the control of two balloons 2, the control of three balloons 2, etc. or the control of all balloons 2, so as to adapt to different usage conditions.

[0041] As an optional embodiment, a plurality of circular holes 14 are axially opened at the top of the rotating knob 10, and the circular holes 14 are connected to the slide groove 13. The limiting member includes a connecting rod 15 slidably connected in the circular hole 14. The bottom end of the connecting rod 15 extends into the slide groove 13 and is fixedly connected to the top of the blocking plate 12. A slot 16 is opened on the inner wall of the circular hole 14. A block 18 is connected to the connecting rod 15 through a spring 17. The block 18 is engaged with the slot 16. The top end of the connecting rod 15 extends out of the circular hole 14 and is located outside the rotating knob 10.

[0042] In one embodiment of the present invention, referring to Figure 2 , Figure 3 , Fig. 9 For the use of the blocking plate 12, the connecting rod 15 is manually pressed to make the connecting rod 15 engage in the corresponding card slot 16, so that the connecting rod 15 is pressed down and the elasticity of the spring 17 ensures the stability of the engagement. At this time, the blocking plate 12 is inserted into the cavity 11 through the pressed down connecting rod 15, so that the corresponding position of the cavity 11 is closed. Conversely, the connecting rod 15 is pressed again to rotate the card block 18 downward to separate from the card slot 16 and rotate, and is reset and engaged in the card slot 16 by the spring 17, so that the blocking plate 12 rises and opens the corresponding cavity 11.

[0043] Specifically, refer to Fig. 9 The block 18 and the slot 16 are unfolded and docked, and the slot 16 has a broken line groove 24 inside, and a sloped protrusion 25 is provided on the block 18. The two are adapted to achieve the pressing and locking and pressing reset of the connecting rod 15.

[0044] As an optional embodiment, the stabilizing member includes a stabilizing cover 19 fixedly connected to the catheter body 1, the stabilizing cover 19 covers the outer surface of the balloon 2, and the stabilizing cover 19 is arranged in contact with the balloon 2 when the balloon 2 expands / contracts.

[0045] In one embodiment of the present invention, referring to Figure 1 , Figure 7 In the initial state, the balloon 2 and the stabilizing cover 19 are both in a contracted state. When the balloon 2 is inflated during the operation, the balloon 2 expands and squeezes the stabilizing cover 19 to expand synchronously. On the one hand, the stabilizing cover 19 is provided to contact the surgical site to improve the contact stability. On the other hand, the balloon 2 extends out of the slit of the stabilizing cover 19 to contact the surgical site, further enhancing the contact stability and preventing it from shifting.

[0046] As an optional implementation, the shape of the stabilizing cover 19 is a mesh shape or a grid shape.

[0047] In one embodiment of the present invention, referring to Figure 6 , Figure 7The stabilizing cover 19 is of a mesh or grid type. The mesh-shaped stabilizing cover 19 makes the surface of the balloon 2 present an array-like protrusion distribution, while the grid-shaped stabilizing cover 19 prevents the balloon 2 from presenting a circumferential strip-shaped protrusion distribution, thereby increasing the stability of the surface contact.

[0048] As an optional implementation, a clamping groove 20 is opened on the inner wall of the cavity 11 , a sealing cover 21 is fixedly connected to the top of the clamping groove 20 , and the sealing cover 21 extends into the clamping groove 20 through the blocking plate 12 .

[0049] In one embodiment of the present invention, referring to Figure 2 In the initial state, the sealing cover 21 is used to ensure the sealing inside the adjusting disk 5 to prevent the cavity 11 and the conveying slot 7 from being connected to the outside. When the conveying slot 7 arranged therein is sealed, the blocking plate 12 is inserted downward into the clamping slot 20 to synchronously drive the sealing cover 21 to squeeze into the clamping slot 20, thereby realizing the sealing of the clamping slot 20 and ensuring the sealing effect through the clamping sealing cover 21.

[0050] As an optional implementation, the balloon 2, the stabilizing cover 19 and the sealing cover 21 are all made of flexible and telescopic materials.

[0051] In one embodiment of the present invention, the balloon 2, the stabilizing cover 19 and the sealing cover 21 are all made of flexible and telescopic materials. The balloon 2 and the stabilizing cover 19 are easy to expand and contract, ensuring stable support after expansion and convenient removal after contraction. The sealing cover 21 is made of telescopic material and is used to seal the internal space of the adjustment disk 5 in the initial state. When the separate snap-in groove 20 is sealed, the sealing of the snap-in groove 20 is ensured.

[0052] As an optional implementation, a pleated layer 22 is provided on the outer side wall of the balloon 2 .

[0053] In one embodiment of the present invention, referring to Figure 8 In the initial state, the balloon 2 is in a contracted state, and the pleated layer 22 is also in a contracted state. According to different treatment needs, different drugs can be added to the pleated layer 22 to store them, and the stored drugs can be delivered to the corresponding position by inflating the balloon 2 during the operation.

[0054] As an optional embodiment, a plurality of delivery channels 23 are opened in the catheter body 1 , one end of the plurality of delivery channels 23 is respectively connected to the plurality of balloons 2 , and the other end of the plurality of delivery channels 23 is respectively connected to the plurality of through holes 8 .

[0055] In one embodiment of the present invention, referring to Figure 1 , Figure 2 The through hole 8 is connected to the balloon 2 through the delivery channel 23 to control the expansion and contraction of the balloon 2.

[0056] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A multi-balloon interventional catheter, comprising a catheter body (1) and a balloon (2), wherein the front end of the catheter body (1) is a guide end, and the rear end of the catheter body (1) is connected to a connector (3), characterized in that: There are a plurality of balloons (2), and the plurality of balloons (2) are axially arranged on the catheter body (1) and are respectively connected to the catheter body (1); An adjustment component, comprising an adjustment block (4) and an adjustment part, wherein the adjustment block (4) is mounted on the catheter body (1), the balloon (2) is connected to the adjustment block (4) through the catheter body (1), and the adjustment part is arranged on the adjustment block (4), and the expansion and contraction of the plurality of balloons (2) are controlled by the adjustment part; The stabilizing component comprises a plurality of stabilizing members, wherein the plurality of stabilizing members are fixedly connected to the catheter body (1) along the axial direction and correspond to the plurality of balloons (2) respectively, and the stabilizing members are arranged in contact with the balloons (2), and the balloons (2) are in contact with the treatment site through the stabilizing members.

2. A multi-balloon interventional catheter according to claim 1, characterized in that: The top of the adjusting block (4) is provided with a groove (6), the adjusting part comprises an adjusting disk (5), the adjusting disk (5) is rotatably connected in the groove (6), a plurality of conveying grooves (7) are provided on the adjusting block (4) at equal intervals in the axial direction, a plurality of through holes (8) are provided at equal intervals in the circumferential direction at the bottom of the groove (6), the plurality of conveying grooves (7) and the plurality of through holes (8) correspond to each other one by one, the plurality of through holes (8) are respectively connected to the catheter body (1), the adjusting block (4) is connected to an external conveying device through a pipeline (9), the pipeline (9) is connected to any of the conveying grooves (7), the adjusting block (4) is provided with a rotating knob (10), the rotating knob (10) is provided with an adjusting member, the adjusting member is used to control the opening / closing of the plurality of conveying grooves (7).

3. A multi-balloon interventional catheter according to claim 2, characterized in that: A cavity (11) is provided in the middle of the adjusting disk (5), and a plurality of the conveying grooves (7) are respectively connected to the cavity (11). The adjusting member comprises a plurality of blocking plates (12). A plurality of sliding grooves (13) are provided on the rotating knob (10) in a circumferential direction. The plurality of blocking plates (12) are respectively slidably connected in the sliding grooves (13) through limiting members, and the bottom ends of the blocking plates (12) penetrate the adjusting disk (5) and extend into the cavity (11). The conveying grooves (7) and the cavity (11) are sealed and separated by the blocking plates (12).

4. A multi-balloon interventional catheter according to claim 3, characterized in that: A plurality of circular holes (14) are axially provided at the top of the rotating knob (10), and the circular holes (14) are connected to the slide groove (13). The limiting member comprises a connecting rod (15) slidably connected to the circular hole (14), and the bottom end of the connecting rod (15) extends into the slide groove (13) and is fixedly connected to the top of the blocking plate (12). A clamping groove (16) is provided on the inner side wall of the circular hole (14), and a clamping block (18) is connected to the connecting rod (15) via a spring (17), and the clamping block (18) is clamped with the clamping groove (16). The top end of the connecting rod (15) extends out of the circular hole (14) and is located outside the rotating knob (10).

5. The multi-balloon interventional catheter according to claim 3, characterized in that: The stabilizing member comprises a stabilizing cover (19) fixedly connected to the catheter body (1), the stabilizing cover (19) covering the outer surface of the balloon (2), and the stabilizing cover (19) being arranged in contact with the balloon (2) when the balloon (2) expands / contracts.

6. The multi-balloon interventional catheter according to claim 5, characterized in that: The shape of the stabilizing cover (19) is one of a mesh shape and a grid shape.

7. The multi-balloon interventional catheter according to claim 5, characterized in that: A clamping groove (20) is provided on the inner wall of the cavity (11), a sealing cover (21) is fixedly connected to the top of the clamping groove (20), and the sealing cover (21) extends into the clamping groove (20) through the blocking plate (12).

8. The multi-balloon interventional catheter according to claim 7, characterized in that: The balloon (2), the stabilizing cover (19) and the sealing cover (21) are all made of flexible and telescopic materials.

9. The multi-balloon interventional catheter according to claim 1, characterized in that: A pleated layer (22) is provided on the outer side wall of the balloon (2).

10. The multi-balloon interventional catheter according to claim 2, characterized in that: A plurality of delivery channels (23) are provided in the catheter body (1), one end of each of the delivery channels (23) is connected to each of the balloons (2), and the other end of each of the delivery channels (23) is connected to each of the through holes (8).

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