CN118490966A - Anchored medical catheter with controllable bending - Google Patents

Abstract

The invention relates to an anchored medical catheter with controllable bending, which belongs to the technical field of medical devices, and comprises a catheter seat, a catheter, a first operating tube and a second operating tube; the inner cavity of the catheter seat is communicated with the catheter, the first operating tube and the second operating tube are respectively embedded in the catheter seat but are not communicated with the inner cavity of the catheter seat, and are located on both sides of the catheter seat; the first operating tube is installed with a control component, and the control component passes through the first operating tube and is installed at the distal end of the catheter; the second operating tube is provided with an anchoring component, the anchoring component extends from the second operating tube to the distal end of the catheter, and the anchoring component is located at the proximal end of the control component; the control component is used to control the turning of the distal end of the catheter, and the anchoring component is used to enhance the penetration of the catheter and adapt to the turning of the catheter; the control component can drive the catheter to bend and advance in a blood vessel, thereby improving the passability of the catheter in the blood vessel, and the anchoring component can also adapt to the bending of the catheter and better fit the blood vessel.

Description

Anchored medical catheter with controllable bending

Technical Field

The invention belongs to the technical field of medical devices, and in particular relates to a controllable bending anchored medical catheter.

Background Art

Interventional therapy is a commonly used treatment method for tumor lesions and vascular lesions in clinical practice. It has the advantages of less trauma and faster recovery. The surgical trauma to patients is relatively small and the postoperative recovery is faster. It is widely used in clinical practice.

There is a close relationship between the permeability and lesion removal capability of interventional catheters. Permeability refers to the ability of the catheter to smoothly advance in blood vessels or other in vivo channel rings, while lesion removal capability refers to the ability of the catheter to effectively perform treatment operations such as resection, embolization or ablation of lesion tissue using the guide wire after reaching the lesion site.

The hardness of the catheter has a certain impact on its permeability and ability to remove lesions. A catheter that is too hard has a strong ability to remove lesions in blood vessels, but it may increase friction and resistance in the blood vessels or channel rings during the puncture process, causing vascular damage. A softer catheter has weaker strength and slightly weaker ability to remove lesions, but it has strong bending ability, which can reduce friction with the blood vessels during the puncture process and avoid vascular damage.

The main purpose of balloon catheters is to cooperate with stents to pre-dilate and post-dilate diseased blood vessels. Simple stenosis lesions can also be treated with simple balloon dilatation. The balloon dilatation catheters currently used in clinical practice have insufficient pushing force when passing through long sections of tortuous, diffusely calcified blood vessels and are unable to pass through the diseased blood vessels smoothly, resulting in a low surgical success rate for treating such lesions.

Therefore, in order to achieve a balance between catheter permeability and lesion removal ability and to achieve better treatment effects, the softer interventional catheters are improved to achieve better treatment effects.

Summary of the invention

The present invention provides a controllable-bending anchoring medical catheter, which solves the problem in the prior art that it is difficult to achieve a balance between the passability of an interventional catheter and the ability to remove lesions.

The purpose of the present invention can be achieved through the following technical solutions:

A controllable bending anchoring medical catheter comprises a catheter seat, a catheter, a first operating tube and a second operating tube; the inner cavity of the catheter seat is connected to the catheter, the first operating tube and the second operating tube are respectively embedded in the catheter seat but not connected to the inner cavity of the catheter seat, and are located on both sides of the catheter seat;

The first operating tube is equipped with a control assembly, which passes through the first operating tube and is installed at the distal end of the catheter; the second operating tube is provided with an anchor assembly, which extends from the second operating tube to the distal end of the catheter, and the anchor assembly is located at the proximal end of the control assembly; the control assembly is used to control the turning of the distal end of the catheter, and the anchor assembly is used to enhance the penetration force of the catheter and adapt to the turning of the catheter.

Preferably, the catheter includes an inner layer, a metal layer, a coating layer and an outer tube layer arranged in sequence from the inside to the outside; the inner layer is a lubricating polymer layer, and the inner layer material is one of LLDPE, PTFE, and HDPE; the metal layer material is one or more combinations of stainless steel, nickel-titanium alloy, and cobalt-nickel alloy; the coating layer material is one or more mixtures of polyamide, polyether block polyamide, and polyurethane elastomer.

Preferably, the metal layer is a hook-type connection structure; the metal layer is composed of a plurality of metal pieces of different lengths, and the lengths of the metal pieces decrease successively from the proximal end to the distal end of the catheter.

Preferably, the hardness of the coating layer material decreases from the proximal end to the distal end of the catheter.

Preferably, the anchoring assembly includes an air inlet tube, a balloon member and a pressure tube balloon, the air inlet tube is used to introduce gas or liquid into the balloon member to realize inflation and deflation operations of the balloon member, the balloon member is arranged in the outer tube layer, the pressure tube balloon is used to improve the bending property of the balloon member, and the balloon member is used to anchor in the blood vessel wall; the balloon member includes a first balloon and a second balloon, the first balloon and the second balloon are both arranged in the outer tube layer, the outer tube layer is provided with two air inlet holes respectively connected to the first balloon and the second balloon, and the pressure tube balloon is arranged between the first balloon and the second balloon.

Preferably, when the balloon is in a filled state, the radial cross section is a symmetrical irregular arc.

Preferably, the balloon material is a mixture of polyurethane, silicone, ethylene-octene polyolefin elastomer or more.

Preferably, the control assembly includes a fixing part, a threaded transmission part, a control device housing, a bending adjustment wire, a channel ring and a metal ring; the metal ring is arranged at the distal end of the catheter and is fixedly connected to the inner layer; the channel ring is arranged between the metal layer and the coating layer, the housing is installed on the first operating tube, the housing is connected to the threaded transmission part, the fixing part is fixedly arranged at one end of the bending adjustment wire, and the bending adjustment wire passes through the threaded transmission part and is fixedly connected to the fixing part.

Preferably, the metal ring material is stainless steel, and the channel ring material is one of LLDPE, PTFE and HDPE.

Preferably, the distal tip of the catheter is provided with a developing marker ring, and the material of the developing marker ring is one of platinum-iridium alloy, platinum-tungsten alloy and tantalum.

The beneficial effects of the present invention are:

The control component can drive the catheter to bend and move forward in the blood vessel, thereby improving the catheter's permeability in the blood vessel. Secondly, the anchoring component can make up for the catheter's high permeability but low lesion removal ability, so that the catheter has both high permeability and high lesion removal ability. Secondly, the anchoring component can also adapt to the curvature of the catheter, better fit the blood vessel, enhance the anchoring effect, and improve the treatment effect.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

FIG1 is a schematic diagram of the structure of a medical catheter provided in one embodiment of the present invention;

FIG2 is a schematic diagram of an anchor assembly installation structure provided in one embodiment of the present invention;

FIG3 is a schematic diagram of the structure of a control component provided in one embodiment of the present invention;

FIG4 is a schematic diagram of a catheter structure provided in one embodiment of the present invention;

Legend: 1. Catheter seat; 2. Catheter; 21. Inner layer; 22. Metal layer; 23. Coating layer; 24. Outer tube layer; 31. First operating tube; 32. Second operating tube; 4. Control assembly; 41. Fixing part; 42. Threaded transmission part; 43. Control device housing; 44. Bending wire; 45. Channel ring; 46. Metal ring; 5. Anchoring assembly; 51. Air inlet pipe; 52. Balloon part; 521. First balloon; 522. Second balloon; 53. Pressure tube balloon; 6. Metal part.

DETAILED DESCRIPTION

In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

As shown in FIGS. 1 to 4 , a controllable bending anchoring medical catheter comprises a catheter seat 1, a catheter 2, a first operating tube 31 and a second operating tube 32; the inner cavity of the catheter seat 1 is connected to the catheter 2, and the first operating tube 31 and the second operating tube 32 are respectively embedded in the catheter seat 1 but not connected to the inner cavity of the catheter seat 1, and are located on both sides of the catheter seat 1;

The first operating tube 31 is equipped with a control component 4, which passes through the first operating tube 31 and is installed at the distal end of the catheter 2; the second operating tube 32 is provided with an anchoring component 5, which extends from the second operating tube 32 to the end of the catheter 2, and the anchoring component 5 is located at the proximal end of the control component 4; the control component 4 is used to control the turning of the distal end of the catheter 2, and the anchoring component 5 is used to enhance the penetration of the catheter and adapt to the turning of the catheter 2; the control component 4 in the first operating tube 31, so that under the action of the control component 4, the catheter 2 is driven to pass through the curved blood vessel to reach the diseased area of the blood vessel, and the catheter 2 After the distal end reaches the target position, the anchoring assembly 5 is manipulated at the end of the second operating tube 32, and the anchoring assembly 5 is arranged at the outer end of the catheter 2, so that the extended part of the anchoring assembly 5 is close to the blood vessel wall, and the catheter 2 can be fixed in the area of vascular lesions. Subsequently, the diseased tissue in the blood vessel is cleaned and removed using a guide wire, and the anchoring assembly 5 can anchor the distal end of the catheter 2 during the process of clearing the diseased tissue, thereby enhancing the ability of the pipeline to remove lesions; since the catheter 2 has good bending performance when passing through a complex and curved vascular system, it has good passability in the blood vessel, which can reduce the risk of puncture. The friction with the blood vessels during the process can reduce the risk of complications. Secondly, after the catheter 2 reaches the lesion area, the second operating end is used to control the anchoring component 5 to anchor the catheter 2 in the lesion area in a filled state, thereby enhancing the lesion removal ability of the distal end of the catheter 2. If the lesion area is large, the filling state of the anchoring component 5 can be reduced by the second operating tube 32 end, so that the catheter 2 can move forward again for cleaning. If the lesion range needs to turn, the control component 4 is used to control the steering of the catheter 2 to turn the catheter 2 to the uncleaned lesion area. After the catheter 2 turns, the anchoring component 5 is also It can adapt to the bending of the catheter 2, that is, the anchoring component 5 bends with the catheter 2, and can also anchor the catheter 2 in the turning area, thereby achieving a sufficient anchoring effect on the catheter 2; in short, the control component 4 can drive the catheter 2 to bend and advance in the blood vessel, thereby improving the permeability of the catheter 2 in the blood vessel. Secondly, the anchoring component 5 can make up for the lower lesion removal ability of the catheter 2 after having high permeability, thereby making the catheter 2 have both high permeability and high lesion removal ability. Secondly, the anchoring component 5 can also adapt to the bending of the catheter 2, better fit the blood vessel, enhance the anchoring effect, and improve the treatment effect.

In summary, the control component 4 enables the catheter 2 to bend precisely, ensuring that the doctor can accurately reach the target area; through precise control and enhanced penetration, this catheter 2 design helps the doctor to clear blood vessel blockages more efficiently, thereby improving the success rate of the operation; precise surgical operations reduce the possibility of accidental injury to the blood vessel wall and other tissues, thereby preventing the occurrence of complications. By integrating the control component 4 and the anchoring component 5, it can not only accurately control the bending of the catheter 2, but also enhance the penetration of the catheter 2 in the blood vessel, thereby improving the accuracy and success rate of the operation.

In one embodiment, the catheter 2 includes an inner layer 21, a metal layer 22, a coating layer 23 and an outer tube layer 24 which are arranged in sequence from the inside to the outside; the inner layer 21 is a lubricating polymer layer, and the material of the inner layer 21 is one of LLDPE, PTFE, and HDPE; the material of the metal layer 22 is one or more combinations of stainless steel, nickel-titanium alloy, and cobalt-nickel alloy; the coating layer material is one or more mixtures of polyamide, polyether block polyamide, and polyurethane elastomer; the inner layer 21 is made of a lubricating polymer material, specifically LLDPE (linear low-density polyethylene), which has excellent lubricity, can reduce the friction of the catheter 2 in the blood vessel, reduce damage to the inner wall of the blood vessel, and is also conducive to the smooth passage of the guide wire and other instruments in the catheter 2; the metal layer 22 is made of stainless steel and nickel The stainless steel provides good structural support, while the nickel-titanium alloy gives the catheter 2 an excellent shape memory function, so that the catheter 2 can quickly return to its original shape after bending. This combination not only ensures the strength of the catheter 2, but also provides good flexibility. The coating layer 23 adopts a mixture of polyamide and polyurethane elastomer. The polyamide enhances the wear resistance and impact resistance of the catheter 2, while the polyurethane elastomer provides excellent elasticity and biocompatibility. The use of this mixed material enables the catheter 2 to maintain sufficient strength while also having good flexibility and biosafety. The outer tube layer 24 adopts medical-grade polyvinyl chloride material, which has excellent corrosion resistance, wear resistance and biocompatibility, can protect the internal structure of the catheter 2, and prevent adhesion to the blood vessel wall.

In one embodiment, the metal layer 22 is a hook-and-loop connection structure; the metal layer 22 is composed of a plurality of metal pieces 6 of different lengths, and the lengths of the metal pieces 6 decrease successively from the proximal end to the distal end of the catheter 2, so that the catheter 2 can present a more natural and smooth curve when bending, and the longer metal piece 6 at the proximal end provides sufficient support and stability, while the shorter metal piece 6 at the distal end makes the distal end of the catheter 2 more flexible and easy to bend and turn in the blood vessel; the hook-and-loop connection structure enables each metal piece 6 to independently respond to the external control force, thereby achieving precise control of the bending degree and direction of the catheter 2; the doctor can accurately adjust the bending state of the catheter 2 by operating the control component 4 according to the needs of the operation, so that it can smoothly pass through the complex vascular structure and reach the target position; the length of the metal piece 6 decreases, but the overall metal layer 22 can still maintain a certain structural strength and stability, ensuring that the catheter 2 will not be excessively twisted or deformed during the bending process, thereby maintaining the stability and safety of the surgical operation.

In summary, the metal layer 22 adopts a hook-type connection structure and is designed to be composed of multiple metal parts 6 of different lengths, which can significantly enhance the bending flexibility of the catheter 2, accurately control the degree and direction of bending, maintain stability, and adapt to different vascular morphologies; these effects together improve the accuracy and safety of vascular interventional treatment.

In one embodiment, the hardness of the coating 23 material decreases from the proximal end to the distal end of the catheter 2; as the hardness of the coating 23 material gradually decreases, the distal end of the catheter 2 becomes softer and more compliant. Since the hardness of the coating 23 gradually decreases, the catheter 2 can present a smoother transition when bending, avoiding stress concentration and distortion of the catheter 2 caused by sudden changes in hardness. This smooth transition helps to maintain the stability and reliability of the catheter 2 during the bending process and improve the accuracy of the operation; the harder coating 23 at the proximal end provides sufficient structural support and protection, while the softer coating 23 at the distal end enhances the flexibility and adaptability of the catheter 2. This structural design enables the catheter 2 to have good bending performance and flexibility while maintaining overall strength and stability, thereby optimizing the overall performance of the catheter 2 in vascular interventional treatment; the metal layer 22 serves as the structural support of the catheter 2, and its metal parts 6 of different lengths are designed to enable the catheter 2 to present a natural and smooth curve when bending, and the gradual decrease in the hardness of the coating 23 material further enhances the flexibility and smoothness of the catheter 2 during the bending process. This combination enables the catheter 2 to respond to the operation in a coordinated manner when bending, thereby improving the accuracy and stability of the operation.

In one embodiment, the anchoring assembly 5 includes an air inlet tube 51, a balloon member 52 and a tube pressure balloon 53. The balloon member 52 is arranged on the outer tube layer 24. The tube pressure balloon 53 is used to improve the bending property of the balloon. The balloon member 52 is used to anchor on the blood vessel wall. The balloon member 52 includes a first balloon 521 and a second balloon 522. The first balloon 521 and the second balloon 522 are both arranged on the outer tube layer 24. The outer tube layer 24 is provided with two air inlet holes respectively connected to the first balloon 521 and the second balloon 522. The tube pressure balloon 53 is arranged between the first balloon 521 and the second balloon 522. The air inlet tube 51 is a fine tubular structure used to introduce gas or liquid into the balloon member 52 to achieve the inflation and deflation of the balloon member 52. One end of the air inlet tube 51 is connected to the balloon member 52, and the other end extends to the proximal end of the catheter 2, which is convenient for the doctor to control during the operation. The balloon member 52 is composed of a first balloon 521 and a second balloon 522, both of which are arranged on the outer surface of the outer tube layer 24 and directly contact the blood vessel wall. The material of the first balloon 521 and the second balloon 522 is usually soft and can be The expanded medical material, such as silicone or latex, is used to ensure that it can closely fit the blood vessel wall after inflation to achieve stable anchoring. It is worth noting that the balloon member 52 is inflated and fits the blood vessel after puncturing into the blood vessel; the outer tube layer 24 is provided with two air inlet holes, which are respectively connected to the first balloon 521 and the second balloon 522. The pressure tube balloon 53 is arranged between the first balloon 521 and the second balloon 522. Its main function is to provide additional support and bendability when the balloon is inflated. The material of the pressure tube balloon 53 has a certain elasticity and flexibility and can be used in the body. When external force is applied, the balloon is deformed, thereby helping the balloon to better adapt to the shape and curvature of the blood vessel. Since the catheter 2 needs to bend and move forward in the blood vessel, the shape and size of the blood vessel are limited. Therefore, the existing catheters 2 for interventional treatment are mostly simple in structure and manufacturing process. Therefore, the compression tube balloon 53 is arranged between the first balloon 521 and the second balloon 522, and can be manufactured through a simple manufacturing process. For example, the first balloon 521 and the second balloon 522 are integrally processed and formed, and then the compression tube parts are processed. The manufacturing process is simple and can be realized.

In one embodiment, when the first balloon 521 and the second balloon 522 are in a filled state, the radial cross-sections of the two are continuous, symmetrical irregular arcs, that is, the outer peripheries of the first balloon 521 and the second balloon 522 are alternately convex and concave, so that when the balloon member 52 is anchored in the blood vessel, it can fit the blood vessel wall and anchor the catheter 2 without affecting the blood flow in the blood vessel, and the convex part contacts the blood vessel wall, and the blood flows from the concave part.

In one embodiment, the balloon material is a mixture of one or more polyurethane, silicone, and ethylene-octene polyolefin elastomer; polyurethane, silicone, and ethylene-octene polyolefin elastomer all have good biocompatibility and can reduce rejection and inflammation with biological tissues such as blood vessel walls. This helps to reduce the risk of complications during surgery and improve patient comfort; at the same time, it has excellent elasticity and resilience, so that the balloon can respond quickly during filling and deflation and maintain a stable shape. This helps to ensure that the balloon can fit closely to the blood vessel wall during anchoring and improve the stability and reliability of anchoring.

In one embodiment, the control assembly 4 includes a fixing member 41, a threaded transmission member 42, a control device housing 43, a bending wire 44, a channel ring 45 and a metal ring 46; the metal ring 46 is arranged at the distal end of the catheter 2 and is fixedly connected to the inner layer 21; the channel ring 45 is arranged between the metal layer 22 and the coating layer, the housing is installed on the first operating tube 31, the housing is threadedly connected to the transmission member, the fixing member 41 is fixedly arranged at one end of the bending wire 44, and the bending wire 44 passes through the transmission member and is fixedly connected to the fixing member 41; the fixing member 41 is fixedly arranged at one end of the bending wire 44, playing a key fixing and supporting role, and the other end of the bending wire 44 passes through the transmission member and is tightly connected to the fixing member 41, forming a stable mechanical structure. By rotating the housing and the transmission member, the doctor can easily adjust the position of the bending wire 44 in the channel ring 45, thereby realizing the bending of the distal end of the catheter 2; by rotating the control device housing 43 and the threaded transmission member 42, the doctor can accurately adjust the position of the bending wire 44 in the channel ring 45, thereby realizing the accurate bending of the distal end of the catheter 2. This precise bending control helps to improve the accuracy and reliability of the operation and ensure that the catheter 2 can accurately reach the target position; the tight and fixed connection between the metal ring 46 and the inner layer 21 and the reasonable arrangement of the channel ring 45 enable the catheter 2 to maintain a stable structural form when bending, reducing deformation and distortion caused by bending. In summary, the structural arrangement of the control component 4 in this embodiment has the advantages of precise bending control, stable operating performance, and easy operation and management.

In one embodiment, the material of the metal ring 46 is stainless steel, and the material of the channel ring 45 is one of LLDPE, PTFE, and HDPE; stainless steel material is selected as the metal ring 46, which has high strength, high corrosion resistance and good processability. The stainless steel metal ring 46 can ensure that the catheter 2 maintains a stable shape and structure when bending, resists corrosion from the external environment, and is easy to be processed into a desired shape, meeting the requirement of precisely controlling the bending of the catheter 2.

In one embodiment, the tip of the catheter 2 is provided with a developing marker ring, and the material of the developing marker ring is one of platinum-iridium alloy, platinum-tungsten alloy, and tantalum; the developing marker ring at the tip of the catheter 2 is an important functional component, which is made of metal materials such as platinum-iridium alloy, platinum-tungsten alloy or tantalum. These materials have excellent biocompatibility, high density and good X-ray transmittance. When the catheter 2 is inserted into the patient's body for surgery, the presence of the developing marker ring allows the doctor to clearly observe the position of the tip of the catheter 2 through X-rays or other medical imaging equipment; due to the high density characteristics of platinum-iridium alloy, platinum-tungsten alloy and tantalum, they can produce obvious images under X-ray irradiation, thereby ensuring that the doctor can accurately locate the tip of the catheter 2. This improvement in positioning accuracy is crucial for vascular intervention surgery, which can help doctors avoid accidental injury to blood vessels or other tissues and improve the safety and success rate of surgery; at the same time, these metal materials also have good corrosion resistance, can remain stable in the body for a long time, and will not produce harmful substances due to corrosion.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims (10)

1. A controllable-bending anchoring medical catheter, which is characterized by comprising a catheter seat, a catheter, a first operation tube and a second operation tube; the inner cavity of the catheter seat is communicated with the catheter, and the first operation pipe and the second operation pipe are respectively embedded in the catheter seat but are not communicated with the inner cavity of the catheter seat and are positioned at two sides of the catheter seat;

the first operation tube is provided with a control component, and the control component is arranged at the far end of the catheter through the first operation tube; the second operating tube is provided with an anchor assembly extending from the second operating tube to the distal end of the catheter, and the anchor assembly is located at the proximal end of the control assembly; the control assembly is configured to control the distal end of the catheter to turn and the anchor assembly is configured to enhance the penetration of the catheter and to accommodate the turning of the catheter.

2. The steerable anchoring medical catheter according to claim 1, wherein the catheter comprises an inner layer, a metal layer, a cladding layer and an outer tube layer arranged in sequence from inside to outside; the inner layer is a smooth polymer layer, and the inner layer material is LLDPE, PTFE, HDPE; the metal layer material is one or a combination of more of stainless steel, nickel-titanium alloy and cobalt-nickel alloy; the coating layer material is one or a mixture of more than one of polyamide, polyether block polyamide and polyurethane elastomer.

3. The controllably curved anchoring medical catheter according to claim 2, wherein the metal layer is a hook-and-loop type connection structure; the metal layer is composed of a plurality of metal pieces with different lengths, and the lengths of the metal pieces are gradually decreased from the proximal end to the distal end of the catheter.

4. The steerable, anchored medical catheter of claim 2, wherein said coating decreases in hardness from the proximal end of said catheter to the distal end.

5. The steerable, anchored medical catheter of claim 2, wherein said anchor assembly comprises an air inlet tube for introducing air or liquid into the balloon for inflation and deflation of the balloon, said balloon being disposed in said outer tubular layer, a balloon member for increasing the flexibility of said balloon, and a balloon for anchoring to the vessel wall; the balloon piece comprises a first balloon and a second balloon, the first balloon and the second balloon are both arranged on the outer tube layer, the outer tube layer is provided with two air inlets respectively communicated with the first balloon and the second balloon, and the tube pressing balloon is arranged between the first balloon and the second balloon.

6. The steerable anchoring medical catheter according to claim 5, wherein the radial cross-section of the balloon member is a symmetrical irregular arc when in the inflated state.

7. The steerable anchoring medical catheter according to claim 5, wherein the balloon member material is one or more of polyurethane, silicone, ethylene-octene polyolefin elastomer, or a blend thereof.

8. The steerable, anchored medical catheter of claim 2, wherein said control assembly comprises a fastener, a threaded delivery member, a control device housing, a bend-adjusting wire, a channel ring, and a metal ring; the metal ring is arranged at the far end of the catheter and is fixedly connected with the inner layer; the channel ring is arranged between the metal layer and the cladding layer, the shell is arranged on the first operation pipe, the shell is connected with the threaded conveying piece, the fixing piece is fixedly arranged at one end of the bending wire, and the bending wire penetrates through the threaded conveying piece to be fixedly connected with the fixing piece.

9. The steerable anchoring medical catheter according to claim 9, wherein the metal loop material is a stainless steel material and the channel loop material is one of LLDPE, PTFE, HDPE.

10. The steerable anchoring medical catheter according to claim 1, wherein the distal tip of the catheter is provided with a developing marker ring, the developing marker ring being made of one of platinum iridium alloy, platinum tungsten alloy, and tantalum.