CN215505065U

CN215505065U - Balloon catheter

Info

Publication number: CN215505065U
Application number: CN202122011337.0U
Authority: CN
Inventors: 程增兵; 卜林鹏; 林林
Original assignee: Suzhou Zhonghui Medical Technology Co ltd
Current assignee: Suzhou Zhonghui Medical Technology Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-14
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to a balloon catheter which comprises a catheter main body and a balloon, wherein the catheter main body comprises an inner catheter and an outer catheter sleeved outside the inner catheter, the far end of the inner catheter extends out of the far end of the outer catheter, the near end of the balloon is connected with the far end of the outer catheter, the far end of the balloon is connected with the far end of the inner catheter, the balloon catheter further comprises a pulling assembly, the pulling assembly is connected with the inner catheter, and the pulling assembly is used for pulling the inner catheter positioned in the balloon to move towards the direction far away from the far end of the balloon. The utility model can ensure that the inner catheter in the saccule keeps a stable distance with the saccule when the saccule catheter is bent in the using process, ensures that the inner catheter is positioned on the axis of the saccule, is convenient for arranging various components for treatment on the inner catheter, and avoids the phenomenon that a certain side is larger and a certain side is smaller, thereby ensuring the stability of the treatment effect, being not easy to cause danger, improving the treatment efficiency and the success rate, and having simple structure and easy production.

Description

Balloon catheter

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a balloon catheter.

Background

Cardiovascular stenosis refers to the condition that blood vessels of arteries and veins of human bodies, including coronary vessels, peripheral vessels, intracranial vessels and the like, due to abnormal lipid metabolism, lipid in blood is deposited on an originally smooth vascular intima, lipid plaques of atheroma are gradually accumulated, and the plaques are increased and even calcified to cause the stenosis in the vascular cavity over time, so that blood flow is blocked, and the blood vessels and the human bodies at the downstream are ischemic, thereby generating corresponding clinical manifestations. If the stenosis occurs in coronary artery, palpitation, chest pain, dyspnea, angina and the like can be generated, and serious patients can cause insufficient blood supply of cardiac muscle or cardiac muscle necrosis; if the disease occurs in the periphery, the skin epidermis temperature is reduced, the muscle is atrophied, and the like, so that intermittent claudication and even necrosis or amputation of the far-end limb occur; if it occurs in the cranium, dizziness, syncope, brain tissue damage and brain dysfunction may occur.

For solving the vascular damage that simple high pressure sacculus preamplifies the cause, like intermediate layer, vascular stress fracture and broken hole scheduling problem, the device that has the function of producing the shock wave begins to appear, the use is intervened to standard PTA to with atherosclerosis or the calcified pathological change remodeling rethread of stenosis pathological change blood vessel, this kind of mode is through sending the supersound to filling in the sacculus that has fluid medium and making the electrode form cavitation bubble and then produce the shock wave, the shock wave strikes calcified regional realization and breaks up calcified pathological change.

As shown in fig. 1, in the prior art, in order to achieve different treatment purposes and treatment means of the device, various structural designs are made on the shock wave generating catheter, and particularly, some new structures are designed on the inner catheter 81 to achieve product effects, but in the using process, the inner catheter 81, which cannot be stably maintained by these structures, is located at the central position in the balloon 82, and is easily eccentric, so that the discharge unit is eccentric, the discharge unit is close to the inner wall of the balloon 82, the shock wave released by the discharge unit will be exponentially attenuated on the side away from the inner wall of the balloon 82, and will have great energy impact on the side close to the inner wall of the balloon 82, which may cause that the place needing treatment cannot be impacted by the shock wave, and the place needing treatment is subjected to great shock wave impact, which will greatly affect the treatment effect of the system device used for the vascular stenosis calcification lesion treatment, even if more new structures are designed, the expected treatment effect cannot be achieved, and the research and development of new treatment schemes and means are seriously hindered while the existing diseases cannot be better treated. However, the existing enterprises do not pay attention to the solution of the eccentric problem of the inner catheter 81, or only use simple bonding/welding and other methods of the inner catheter and the outer catheter at the near end to solve the problem.

Disclosure of Invention

It is an object of the present invention to provide a balloon catheter for correcting the problem of inner catheter eccentricity.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a sacculus pipe, includes pipe main part, sacculus, the pipe main part include interior pipe, cover and establish interior pipe outside outer pipe, the distal end of interior pipe stretch out the distal end of outer pipe, the near-end of sacculus connect the distal end of outer pipe, the distal end of sacculus connect the distal end of interior pipe, the sacculus pipe still include the tractive subassembly, the tractive subassembly with interior pipe connection, the tractive subassembly be used for the pulling to be located the sacculus in interior pipe to keeping away from the direction of sacculus distal end remove.

Preferably, the pulling assembly comprises an operating member disposed at the proximal end of the catheter body, the operating member being connected to the inner catheter.

Further preferably, the balloon catheter further comprises an operating handle, the operating handle is connected to the proximal end of the catheter main body, the operating member is arranged on the operating handle, the operating member comprises a slide rail arranged on the operating handle and a slide block movably arranged on the slide rail, and the proximal end of the inner catheter is connected to the slide block.

Preferably, the pulling assembly comprises an operating member and a pulling member, the operating member is arranged at the proximal end of the catheter main body, one end of the pulling member is connected with the operating member, and the other end of the pulling member is connected with the inner catheter.

Further preferably, the connection position of the other end of the traction member and the inner catheter is located between the operating member and one half of the axial length of the balloon.

Still further preferably, when the inner catheter coincides with the balloon axis, the joint of the other end of the traction member and the inner catheter and the joint of the proximal end of the balloon and the distal end of the outer catheter are all located on the same cross section perpendicular to the catheter main body axis.

Further preferably, the other end of the pulling member is directly connected with the inner conduit; or the other end of the traction piece is connected with the inner conduit through a connecting piece.

Still further preferably, the connecting piece is a ring body fixedly sleeved on the inner conduit, a groove body is formed in the ring body, and the traction piece is connected in the groove body.

Further preferably, the traction member is made of a metal material or a polymer material, the metal material is selected from stainless steel and nickel titanium, and the polymer material is selected from nylon.

Further preferably, the balloon catheter further comprises an operating handle, the operating handle is connected to the near end of the catheter main body, the operating part is arranged on the operating handle, the operating part is a knob, the knob can rotate around the axis of the knob, a traction rotating shaft is arranged on the knob, and one end of the traction part is arranged on the traction rotating shaft in a winding mode.

Further preferably, the balloon catheter further comprises an operating handle, the operating handle is connected to the proximal end of the catheter main body, the operating member is arranged on the operating handle, the operating member comprises a slide rail arranged on the operating handle and a slide block movably arranged on the slide rail, and one end of the traction member is connected to the slide block.

Preferably, the balloon catheter further comprises an electrode unit, and the electrode unit is arranged on the inner catheter inside the balloon.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model can ensure that the inner catheter in the saccule keeps a stable distance with the saccule when the saccule catheter is bent in the using process, ensures that the inner catheter is positioned on the axis of the saccule, is convenient for arranging various components for treatment on the inner catheter, and avoids the phenomenon that a certain side is larger and a certain side is smaller, thereby ensuring the stability of the treatment effect, being not easy to cause danger, improving the treatment efficiency and the success rate, and having simple structure and easy production.

Drawings

FIG. 1 is a schematic structural view of a balloon catheter in use in the prior art;

FIG. 2 is a schematic structural view of the present embodiment in use;

FIG. 3 is a schematic structural diagram of the present embodiment;

FIG. 4 is a schematic structural view of the connection and engagement portion of the pulling member and the inner conduit in this embodiment;

FIG. 5 is a schematic structural view of the operating member of the present embodiment using a knob;

fig. 6 is a schematic structural view of the operating element of the present embodiment when the slide rail is used for matching with the slider.

In the above drawings: 1. a balloon; 2. an operating handle; 3. an inner conduit; 4. an outer catheter; 5. an operating member; 51. a knob; 511. a traction rotating shaft; 52. a slide rail; 53. a slider; 6. a traction member; 7. a connecting member; 81. an inner conduit; 82. a balloon.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 2 and 3, the balloon catheter comprises a catheter main body, a balloon 1, an operating handle 2 and a pulling assembly. The catheter main body comprises an inner catheter 3 and an outer catheter 4 sleeved outside the inner catheter 3, and the distal end of the inner catheter 3 extends out of the distal end of the outer catheter 4. The near end of the sacculus 1 is connected with the far end of the outer catheter 4, the far end of the sacculus 1 is connected with the far end of the inner catheter 3, the far end of the inner catheter 3 can penetrate out of the far end of the sacculus 1 to continue to extend outwards, and the inner catheter 3 is fixedly connected with the sacculus 1. The near end of the outer catheter 4 and the near end of the inner catheter 3 are both connected to the operating handle 2, the pulling assembly is arranged on the operating handle 2 and connected with the inner catheter 3, the pulling assembly is used for pulling the inner catheter 3 located in the balloon 1 to move towards the direction far away from the far end of the balloon 1, the pulling assembly pulls the inner catheter 3, the near end of the outer catheter 4 is blocked by the operating handle 2, the far end of the balloon 1 is blocked by the inner catheter 3, the outer catheter 4 and the balloon 1 are relatively fixed, only the inner catheter 3 moves relatively, the axial lead of the inner catheter 3 located in the balloon 1 can be coincided with the axial lead of the balloon 1, and the space between the inner catheter 3 in the balloon 1 and the balloon 1 is kept stable.

As shown in Figs. 4-6, the pulling assembly comprises an operating member 5, a pulling member 6, the operating member 5 being arranged on the operating handle 2, i.e. the operating member 5 is located at the proximal end of the catheter body. The operating element 5 can be directly connected with the inner catheter 3, and the inner catheter 3 is directly pulled by the operating element 5 to move so as to avoid eccentricity (the eccentricity means that the axis of the inner catheter 3 deviates from the axis of the balloon 1); or the operating part 5 is connected with the inner guide pipe 3 through the traction part 6, one end of the traction part 6 is connected with the operating part 5, and the other end of the traction part 6 is connected with the inner guide pipe 3, so that the traction part 6 is pulled by the operating part 5, the traction part 6 drives the inner guide pipe 3 to move to avoid eccentricity, and the traction part 6 is positioned in a gap between the inner guide pipe 3 and the outer guide pipe 4, thereby being convenient for pulling the traction part 6 to move without influencing the normal work of the inner guide pipe 3 and the outer guide pipe 4.

As shown in fig. 3 and 4, the pulling member 6 is a linear or filamentous pulling wire made of a flexible material with high breaking strength, and specifically, a metal material or a polymer material is used, the metal material is selected from stainless steel, nickel titanium, and the like, and the polymer material is selected from nylon and the like. The part of the traction assembly which has the effect of pulling the inner catheter 3 is between the joint of the traction assembly and the inner catheter 3 and the joint of the inner catheter 3 and the balloon 1 (the inner catheter 3 and the balloon 1 are relatively fixed), so that the connecting position of the other end of the traction piece 6 and the inner catheter 3 is positioned between the operating piece 5 and one half of the axial length of the balloon 1, when the connecting position is too close to the far end of the balloon 1, the section of the inner catheter 3 which can be subjected to the stretching effect is too short, and the possibility that the longer section is eccentric is still existed, so that the poor treatment effect is brought. The connecting position of the other end of the traction piece 6 and the inner catheter 3 can be arranged at the connecting position of the balloon 1 and the outer catheter 4, namely when the axial lead of the inner catheter 3 is coincident with the axial lead of the balloon 1, the connecting position of the other end of the traction piece 6 and the inner catheter 3 and the connecting position of the near end of the balloon 1 and the far end of the outer catheter 4 are both positioned on the same cross section perpendicular to the axial lead of the catheter main body, and at the moment, the length of the inner catheter 3 positioned in the balloon 1 is equal to the length of the balloon 1, so that the traction piece can just play a role in pulling all the inner catheters 3 in the balloon 1.

The other end of the traction element 6 can be directly connected with the inner conduit 3 or can be connected with the inner conduit 3 through a connecting element 7. When the traction member 6 is directly connected with the inner conduit 3, the other end of the traction member 6 can be welded on the inner conduit 3; or a groove body can be arranged on the inner conduit 3, the other end of the traction piece 6 is provided with a head structure matched with the shape of the groove body, and the head structure of the traction piece 6 is clamped with the groove body on the inner conduit 3. When the traction piece 6 is connected with the inner guide pipe 3 through the connecting piece 7, the connecting piece 7 can be a ring body fixedly sleeved on the inner guide pipe 3, the ring body can be welded or clamped with the inner guide pipe 3, the traction piece 6 can be directly welded on the ring body, a groove body can also be formed in the ring body, the traction piece 6 is connected in the groove body, the groove body plays a limiting role in the other end of the traction piece 6, and the other end of the traction piece 6 is prevented from shifting around the axis line of the inner guide pipe 3.

As shown in fig. 5 and 6, the operating member 5 can adopt a knob 51, and the operating member 5 needs to pull the inner catheter 3 through the traction member 6; the sliding rail 52 and the sliding block 53 can be matched, and the operating part 5 can directly pull the inner guide pipe 3 or indirectly pull the inner guide pipe 3 through the traction part 6. When the operation member 5 is a knob 51, the knob 51 is rotatably connected to the operation handle 2, the knob 51 is rotatable around its own axis, the knob 51 has a pulling rotation shaft 511, the axis of the pulling rotation shaft 511 coincides with the axis of the knob 51, one end of the pulling member 6 is wound around the pulling rotation shaft 511, and by rotating the knob 51, one end of the pulling member 6 is gradually wound around the pulling rotation shaft 511 to pull the inner catheter 3, in this embodiment, the axis of the knob 51 is perpendicular to the axis of the catheter main body. When the operating element 5 is provided with the slide rail 52 and the slider 53, the slide rail 52 is connected to the operating handle 2, the extending direction of the slide rail 52 is the same as the extending direction of the shaft center line of the catheter main body, and the slide rail 52 is movably provided on the slide rail 52. At this time, if the inner catheter 3 is directly connected to the operation element 5, the proximal end of the inner catheter 3 is connected to the slider 53; when the inner catheter 3 is connected to the operation member 5 via the pulling member 6, one end of the pulling member 6 is connected to the slider 53.

The balloon catheter also comprises an electrode unit, the electrode unit is arranged on the inner catheter 3 inside the balloon 1, the electrode unit is connected with a pulse power supply through a lead, and pulse shock waves can be released outwards through the balloon 1 for treatment.

The working principle of the present embodiment is specifically described as follows:

as shown in fig. 2-4, the operation handle 2 is controlled to move the balloon 1 to the region to be treated of the blood vessel through the catheter main body, expand the balloon 1, if the region to be treated is bent greatly, the inner catheter 3 is eccentric relatively seriously, even adheres to the wall, at this time, the inner catheter 3 is directly pulled through the operation part 5, or the operation part 5 pulls the inner catheter 3 through the traction part 6, so that the inner catheter 3 positioned in the balloon 1 is stretched until the axial lead of the inner catheter 3 positioned in the balloon 1 is coincident with the axial lead of the balloon 1.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a sacculus pipe, includes pipe main part, sacculus, the pipe main part include interior pipe, cover establish the outer pipe outside the interior pipe, the distal end of interior pipe stretch out the distal end of outer pipe, the near-end of sacculus connect and be in the distal end of outer pipe, the distal end of sacculus connect and be in the distal end of interior pipe, its characterized in that: the balloon catheter further comprises a pulling assembly, the pulling assembly is connected with the inner catheter, and the pulling assembly is used for pulling the inner catheter located in the balloon to move towards the direction far away from the far end of the balloon.

2. The balloon catheter of claim 1, wherein: the pulling assembly comprises an operating member, the operating member is arranged at the proximal end of the catheter main body, and the operating member is connected with the inner catheter.

3. The balloon catheter of claim 2, wherein: the balloon catheter further comprises an operating handle, the operating handle is connected to the near end of the catheter main body, the operating part is arranged on the operating handle, the operating part comprises a sliding rail arranged on the operating handle and a sliding block movably arranged on the sliding rail, and the near end of the inner catheter is connected to the sliding block.

4. The balloon catheter of claim 1, wherein: the traction assembly comprises an operation part and a traction part, wherein the operation part is arranged at the near end of the catheter main body, one end of the traction part is connected with the operation part, and the other end of the traction part is connected with the inner catheter.

5. The balloon catheter of claim 4, wherein: the connecting position of the other end of the traction piece and the inner catheter is positioned between the operating piece and one half of the axial length of the balloon.

6. The balloon catheter of claim 5, wherein: when the inner catheter is coincided with the balloon axial lead, the joint of the other end of the traction piece and the inner catheter and the joint of the near end of the balloon and the far end of the outer catheter are all positioned on the same cross section which is vertical to the axial lead of the catheter main body.

7. The balloon catheter of claim 4, wherein: the other end of the traction piece is directly connected with the inner conduit; or the other end of the traction piece is connected with the inner conduit through a connecting piece.

8. The balloon catheter of claim 7, wherein: the connecting piece is a ring body fixedly sleeved on the inner conduit, a groove body is formed in the ring body, and the traction piece is connected in the groove body.

9. The balloon catheter of claim 4, wherein: the traction piece is made of a metal material or a high polymer material, the metal material is selected from stainless steel and nickel titanium, and the high polymer material is selected from nylon.

10. The balloon catheter of claim 4, wherein: the balloon catheter further comprises an operating handle, the operating handle is connected to the near end of the catheter main body, the operating part is arranged on the operating handle, the operating part is a knob, the knob can rotate around the axis of the knob, a traction rotating shaft is arranged on the knob, and one end of the traction part is arranged on the traction rotating shaft in a winding mode.

11. The balloon catheter of claim 4, wherein: the balloon catheter further comprises an operating handle, the operating handle is connected to the near end of the catheter main body, the operating part is arranged on the operating handle, the operating part comprises a sliding rail arranged on the operating handle and a sliding block movably arranged on the sliding rail, and one end of the traction part is connected to the sliding block.

12. The balloon catheter of claim 1, wherein: the balloon catheter also comprises an electrode unit, and the electrode unit is arranged on the inner catheter in the balloon.