CN210301985U

CN210301985U - Interventional conveying device

Info

Publication number: CN210301985U
Application number: CN202020196850.4U
Authority: CN
Inventors: 李�瑞; 龚善石; 闫伟
Original assignee: Shanghai Interventional Medical Equipment Co Ltd
Current assignee: Shanghai Interventional Medical Equipment Co Ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-04-14
Anticipated expiration: 2030-02-24

Abstract

The utility model provides an intervene conveyor, include: conveying sheath pipe and development ring, conveying sheath pipe is single-layer construction, the distal end of conveying sheath pipe is for being the throat form development portion, development portion distal end outside diameter is less than near-end outside diameter, develop the ring embedding development portion, and after embedding development ring the development portion outward surface is level and smooth form, the utility model discloses an embedding development ring after handling the distal end throat of sheath pipe, the surface that makes development portion department on development ring and the sheath pipe does not have the arch, and makes the development portion surface of whole sheath pipe smooth, makes the operator can accurately judge conveyor's position on medical imaging equipment, reduces the outside diameter of conveyor distal end and reduces conveyor's external friction power for intervene the treatment and accomplish more fast more accurately, reduce patient's misery and treatment risk.

Description

Interventional conveying device

Technical Field

The utility model relates to the field of medical equipment, especially, indicate an intervene conveyor.

Background

The interventional therapy depends on the guidance of medical imaging equipment, diagnoses and treats diseases by utilizing puncture needles, catheters and other interventional devices, and has the characteristics of accurate positioning, small wound, few complications, high curative effect, quick response, strong repeatability and the like. Interventional therapy has become the third major clinical treatment means in parallel with medical and surgical treatment. Interventional therapy is a wide variety of techniques, and can be divided into intravascular interventional techniques and non-vascular interventional techniques.

The endovascular intervention technology is to apply selective or super-selective angiography, to determine the location, property, range and degree of lesion, and to perform embolization, endovascular angioplasty, drug perfusion and other treatments via a catheter inserted into the blood vessel according to the indication. With intravascular interventional techniques, a wide variety of materials, instruments and drugs can be placed into the heart and arteriovenous vessels of the human body. For example, transseptal needles, valve repair devices, heart occluders, vascular plugs, vascular filters, and the like may be placed at selected locations by interventional techniques.

Currently, when an endovascular intervention is used for treatment, a puncture technique is usually used to make a vascular access, an interventional delivery device is then introduced into the blood vessel to establish a passage from the access to the lesion site, and then a Digital Subtraction Angiography (DSA) is used to perform an angiography, so as to determine information such as the size and the range of the lesion site. Because the lesion tissue is not exposed in the interventional therapy, the operator needs to observe the position reached by the interventional delivery device through the image on the medical imaging equipment, and the position is too close or too far, which may cause the treatment failure and even cause serious damage to the human tissues such as blood vessels, heart and the like.

In addition, when the intravascular interventional technique is adopted for treatment, the interventional conveying device needs to pass through tortuous blood vessels of a human body, the external diameter of the conveying device is too large or the friction force is too large, the difficulty of the conveying device passing through the blood vessels is increased, and the risk of damaging the blood vessels by the conveying device is promoted.

In addition, the possibility of parts of the interventional delivery device falling off increases the medical risk of interventional therapy.

Disclosure of Invention

The utility model discloses an overcome current intervention conveyor and carry the higher and this technical problem of easy damage blood vessel of the degree of difficulty in human blood vessel, provide a new intervention conveyor.

The utility model provides a technical scheme as follows:

an interventional delivery device, comprising: conveying sheath pipe and development ring, conveying sheath pipe is single-layer construction, the distal end of conveying sheath pipe is for being the throat form development portion, development portion distal end outside diameter is less than near-end outside diameter, the embedding of development ring development portion, and the embedding develops behind the ring the development portion outward surface is the level and smooth form.

In the technical scheme, the conveying sheath tube with the single-layer structure and the developing part with the smooth surface formed by the necking treatment at the far end of the conveying sheath tube and the embedding developing ring are adopted, so that the outer surface of the developing part with the developing ring is smooth and has no step, the diameter is smaller, the position of the conveying device on medical imaging equipment can be accurately judged, and the purposes of reducing the conveying difficulty in a human blood vessel and avoiding damaging blood vessel tissues can be better achieved.

Preferably, the developing ring is located inside the developing part, and an outer surface of the developing ring is covered by the developing part.

Preferably, the outer surface of the developing part is free from unevenness.

Preferably, the outer surface of the developing ring embedded in the developing part is slightly protruded outwards from the outer surface of the developing part or slightly concaved inwards from the outer surface of the developing part, and the joint of the developing ring and the developing part is in smooth transition.

Preferably, any axis of the outer surface of the developing ring embedded in the developing part and the axis of the same position of the outer surface of the developing part are on the same straight line, and the outer surface of the developing part is smooth and has no protrusion.

Preferably, the developing ring is embedded by heat fusion from an outer surface of the developing part.

Preferably, the developing ring is 2-5mm from the distal end point of the developing part.

Preferably, the conveying sheath further comprises a main body part and a molding part connected with the main body part and the developing part, the molding part is located between the main body part and the developing part, extends and bends from the main body part to the developing part, and the distal end of the molding part and the proximal end of the developing part are of a coaxial structure and have the same outer diameter; and the developing part is also provided with a plurality of developing holes.

In this technical scheme, extend the crooked shaping portion that forms by the main part to do benefit to and intervene conveyor and carry in the blood vessel, can not cause the injury to human tissue in transportation process, the developing hole is used for injecting into the contrast medium simultaneously.

Preferably, 1-3 developing members are embedded in the forming part of the conveying sheath, and the outer surface of the forming part is smooth.

Preferably, the developing member is spaced from the distal end point of the developing portion by 10 to 30 mm.

Preferably, the number of the developing holes is 3-6, and each of the developing holes is 5-10mm away from the distal end point of the developing part.

Preferably, the included angle between the tangent of the far end of the molding part and the axial direction of the main body part is 30 ︒ -150 ︒.

Preferably, the developing ring and the developing member are made of developable metal.

Preferably, the developable metal is one of stainless steel, tungsten gold, tantalum, platinum and iridium materials.

Preferably, the material of the conveying sheath is one of high-density polyethylene, block polyether amide, polyamide or polyurethane.

Compared with the prior art, the utility model provides a pair of intervene conveyor has following beneficial effect:

1. the utility model has the advantages that the developing ring is embedded after the distal end necking of the sheath tube is processed, so that the outer surface of the developing part where the developing ring is embedded is not convex, the outer surface of the whole developing part is smooth, and no step is generated due to the installation of the developing ring, thereby not only facilitating the operator to accurately judge the position of the conveying device on the medical imaging equipment, but also reducing the external friction force of the conveying device and preventing the human body tissue from being clamped due to the step; the developing ring is positioned in the developing part, so that the condition that the developing ring is exposed outside the conveying sheath tube to damage the blood vessel by friction is avoided; the developing part passing through the necking is in a frustum-shaped structure, and the reduced outer diameter of the far end reduces conveying obstacles; the above benefits enable interventional therapy to be completed more quickly and accurately, reducing patient pain and treatment risk.

2. The single-layer structure of the conveying sheath in the preferred embodiment of the utility model further reduces the structure of the more layers of the outer diameter of the conveying sheath, which is beneficial to the movement of the conveying sheath in the blood vessel.

3. The utility model discloses be different from in the past the way of embedding development ring behind the fluting on the development portion, the utility model discloses a carry out the throat to the distal end of conveying sheath pipe to become by the direct hot melt embedding development ring in its surface the scheme of development portion, processing is more convenient, and the step is simpler, and the effect of just taking shape is better.

4. The utility model discloses a development part embedding development portion makes development part be located development portion inside, can not cause the development ring to drop in vivo, forms the risk of medical accident.

Drawings

The above features, technical features, advantages and modes of realisation of an interventional delivery device and a method of manufacturing the same will be further described in the following, in a clearly understandable manner, with reference to the accompanying drawings, which illustrate preferred embodiments.

Fig. 1 is a schematic structural view of an embodiment of the present invention;

FIG. 2 is an enlarged partial view of one embodiment of the present invention;

fig. 3 is a schematic structural view of an embodiment of the present invention;

FIG. 4 is a partial enlarged view of an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an embodiment of the present invention.

The reference numbers illustrate: main body 110, forming part 120, developing part 130, developing hole 131, developing ring 132, and developing member 133.

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this context, "one" means not only "one but also" more than one ", and the term" proximal "as used herein refers to the end closer to the operator in the minimally invasive vascular intervention, and similarly, the term" distal "refers to the end farther from the operator in the minimally invasive vascular intervention.

A preferred embodiment of the present invention, as shown in fig. 1, is an interventional delivery device comprising: the developing ring 132 and the single-layer structure of the conveying sheath, the far end of the conveying sheath is the developing part 130, the far-end outside diameter of the developing part 130 is smaller than the near-end outside diameter, so that the developing part 130 is in a throat-shaped structure, the developing ring 132 is embedded into the developing part 130, and the outer surface of the developing part 130 embedded into the developing ring 132 is smooth.

In specific implementation, the material of the conveying sheath is one of high-density polyethylene, block polyether amide, polyamide or polyurethane, in this embodiment, the material of the conveying sheath is not limited, and the material and the shape of the developing ring 132 are not limited, only the developing ring 132 needs to be embedded in the outer surface of the necking-shaped developing part 130 by hot melting, the joint of the embedded developing ring 132 and the developing part 130 has no protrusion, and the joint of the outer surface of the embedded developing ring 132 and the developing part 130 is on the same smooth surface, so that the developing ring 132 does not expose the developing part 130, and meanwhile, the interventional delivery device does not have a friction feeling, and can smoothly advance or retreat in a blood vessel during interventional therapy, and does not damage the blood vessel tissue; the constricted developing portion 130 advances more easily in a blood vessel and is less likely to scratch a blood vessel tissue.

In practice, after the developing ring 132 is inserted into the developing part 130, there are several cases as follows:

the developing ring 132 is located inside the developing part 130, the outer surface of the developing ring 132 is covered by the developing part 130 after being melted, the developing ring 132 is not exposed, and the surface of the whole developing part 130 is smooth without steps, so that the intervention conveying device is conveyed in the body without damaging human tissues.

Specifically, the outer surface of the developing part 130 is smooth and has no unevenness, the surface of the whole developing part 130 has no steps, the outer surface is smooth and flat, and the diameter of the position for placing the developing ring 132 is not higher than the diameter of the joint of the developing ring 132 and the two ends, so that the developing ring 132 can not generate any damage to the vascular tissue when advancing or retreating in the blood vessel;

or the outer surface of the developing ring 132 embedded in the developing part 130 is slightly protruded out of the outer surface of the developing part 130 or slightly recessed into the outer surface of the developing part 130, and the developing part 130 is covered on the surface of the developing ring 132 through hot melting, so that the joint of the developing ring 132 and the developing part 130 is in smooth transition, and the outer surface of the whole developing part 130 is in a smooth shape, therefore, the interventional conveying device can not damage blood vessels when entering the blood vessels.

Any axis of the outer surface of the developing ring 132 embedded into the developing part 130 and the axis of the same position of the outer surface of the developing part 130 are on the same straight line, the outer surface of the developing part 130 is smooth and has no protrusion, the surface of the whole developing part 130 is smooth and has no protrusion or step feeling, the developing part 130 at the joint is melted by heat treatment, the joint is smooth, and the surface of the whole developing part 130 is smooth and has no protrusion or step, so that the intervention conveying device can be pushed or withdrawn in a blood vessel.

It is understood that, in the implementation of the present embodiment, the shape of the developing part 130 after the post-development ring 132 is inserted is not limited, and it is only necessary that the outer surface of the developing part 130 after the post-development ring 132 is inserted is smooth and has no angular unevenness.

In some preferred embodiments, the delivery sheath further includes a forming portion 120, the forming portion 120 is located between the main body portion 110 and the developing portion 130, the forming portion 120 extends and bends from the distal end of the main body portion 110 to the proximal end of the developing portion 130, the distal end of the forming portion 120 and the proximal end of the developing portion 130 are coaxial and have the same outer diameter, an included angle α between a tangent line at the distal end of the forming portion 120 and the axial direction of the main body portion 110 is 30-150 degrees, in some preferred embodiments, an included angle α between the forming portion 120 and the main body portion 110 can be further defined as 45-135 degrees, the developing portion 130 is further provided with a plurality of developing holes 131, the developing holes 131 are circumferentially distributed on the outer surface of the developing portion 130, the number of the developing holes 131 is 3-6, each developing hole 131 is 5-10mm away from the distal end point of the developing portion 130, the distance between the developing ring 132 and the distal end point of the delivery sheath is 2-5mm, in some preferred embodiments, 1-3 developing members 133 are embedded in the forming portion 120 of the delivery sheath, and the forming portion 120 is smooth, and the distance between the distal end point of the developing portion.

In the embodiment, as shown in fig. 2, the main body 110 of the conveying sheath has a threaded sheath seat for facilitating connection with other components of the interventional delivery device during application, the developing part 130 has 3 developing holes 131 and 1 developing ring 132, the developing ring 132 is located at the distal end of the developing part 130, and is 2mm away from the distal end point of the developing part 130; the included angle between the forming part 120 and the main body part 110 is 95 degrees, the developing ring 132 is positioned inside the developing part 130, the outer diameters of the developing part 130 and the forming part 120 are the same, the connecting part has no step and is smooth, the part of the developing part 130 added into the developing ring 132 is not higher than the developing part 130, and the outer surface of the whole conveying sheath pipe is a smooth surface. Therefore, when the conveying sheath enters and exits the human blood vessel, the outer surface of the conveying sheath has no obvious step and no developing ring 132 exposed outside, and the blood vessel tissue cannot be clamped by the step of the sheath or damaged by the friction force brought by the developing ring 132 exposed outside; furthermore, even when the developing ring 132 is bent, the developing ring 132 is not separated from the developing part 130 due to bending or deformation during the transportation process, which causes serious medical accidents, as compared with the prior art.

In another embodiment of the present invention, as shown in fig. 3, the angle α formed by extending and bending the forming portion 120 from the main body portion 110 to the distal end is 45 °, the developing portion 130 has 4 developing holes 131, the forming portion 120 is further provided with 1 developing member 133, the developing holes 131 are circumferentially distributed, the distances between the developing ring 132 and the developing member 133 and the distal end point of the developing portion 130 are 5mm and 15mm, respectively, and the distance between the developing ring 132 and the developing member 133 is 10mm, the number of the developing members 133 located in the forming portion 120 can be increased to 3 according to the actual application requirement, but the number of the developing members 133 is not limited too much in this embodiment, and is limited to 1 developing ring 132 and 1 developing member 133 in this embodiment, and the distance between the developing ring 132 and the developing member 133 can be adjusted between 2mm and 10 mm.

In another embodiment of the present invention, as shown in fig. 4, the developing part 130 has 3 developing holes 131 and the forming part 120 is further provided with 1 developing part 133, and the distance between the developing ring 132 and the developing part 133 is 10mm, in this embodiment, only the number of the developing holes 131 and the developing rings 132 is limited, and the others are not limited. The interventional delivery device prepared in this embodiment is used in an operation for delivering an interatrial septum puncture instrument, and the delivery sheath is delivered into a femoral vein along the guide steel wire, when the distal end of the delivery sheath reaches the bifurcation height of a trachea, the distal end of the delivery sheath is directed to the spinal column, the guide steel wire is withdrawn, a developer is injected through the delivery sheath, the interatrial septum puncture instrument is delivered to the position of the developer ring 132 at a position far away from the distal end of the delivery sheath along the delivery sheath, and the delivery sheath and the interatrial septum puncture instrument are rotated to the puncture position.

By applying the embodiment to carry out the operation steps, the arriving position of the far end of the transmission sheath tube is accurate and controllable, the arriving position of the transmitted instrument in the transmission sheath tube is accurate and controllable, and the risk that the puncture fails or the operation time is increased due to the fact that the position of the instrument is inaccurate and the puncture is carried out at the position which is not suitable for puncture is reduced.

In another embodiment of the present invention, as shown in FIG. 5, the developing part 130 has 3 developing holes 131 and the forming part 120 is further provided with 2 developing members 133, the distance between the developing ring 132 and the developing members 133 and the distance between the developing

members

133 and 133 are 10mm, in the present embodiment, in addition to the specific number of the developing holes 131 and the developing members 133 being limited, other products manufactured by the embodiment are not limited, and when the products are used for conveying heart plugging instruments such as left auricle plugging and the like in the operation, the products are conveyed into femoral veins along the guide steel wire, after the heart atrial septal puncture position or the position of the heart defect is reached, the developer is injected through the conveying sheath, the heart plugging device is pushed in along the conveying sheath until the distal end of the heart plugging device reaches the position of the developing ring 132 at the farthest end of the conveying sheath, and the conveying sheath and the heart plugging device are rotated to the implantation position.

When the embodiment is used for carrying out the operation steps, the conveying sheath tube can reach the designated position more easily, the cardiac plugging device can be released at the designated position more easily and controllably, the operation success rate is increased, and the medical risk is reduced.

In the above embodiment, the developing ring 132 and the developing member 133 are made of one of stainless steel, tungsten gold, tantalum, platinum, iridium, and the like, and the interventional delivery device of the above embodiment is manufactured by the manufacturing method described below.

A method of making an interventional delivery device, comprising the steps of:

in the specific processing, the conveying sheath is a single-layer structure, and the material of the conveying sheath may be one of high-density polyethylene, block polyether amide, polyamide or polyurethane, in this embodiment, the material of the conveying sheath is not particularly limited, and during the processing, the distal end of the conveying sheath is first subjected to necking treatment to form a developing part 130, and a developing ring 132 is thermally embedded in the outer surface of the necking position; the embedded developing ring 132 is fastened, and the developing part 130 is heat-treated to make the outer surface of the developing part 130 smooth.

When in specific processing, the method also comprises the following steps: the distal end of the delivery sheath main body portion 110 is extended to form a molding portion 120, and the proximal end of the developing portion 130 is connected to the distal end of the molding portion 120, and the molding portion 120 is bent by heat treatment; the molding part 120 is fitted with a plurality of developing members 133, and the outer surface of the molding part 120 fitted with the developing members 133 is smooth, and the developing part 130 is provided with a plurality of developing holes 131. The developing ring 132 and the developing member 133 are made of a developable metal, wherein the developable metal is one of stainless steel, tungsten gold, tantalum, platinum, iridium, and the like.

The developing ring 132 embedded in the developing part 130 is positioned inside the developing part 130 by fastening processing at the specific processing, and the joint of the developing ring 132 and the developing part 130 is melted and covered on the outer surface of the developing ring 132 by heat treatment;

the specific steps can be that the outer surface of the embedded developing ring 132 is positioned in the developing part 130, the developing part 130 at the joint is melted and covered on the surface of the developing ring 132 through heat treatment, and the outer surface of the developing part 130 embedded in the developing ring 132 has no concave-convex and is smooth;

or the developing ring 132 embedded in the developing part 130 protrudes slightly outward from the developing part 130 or is recessed slightly inward from the developing part 130, the developing part 130 at the joint is melted by heat treatment to cover the outer surface of the developing part 130, and the outer surface of the developing part 130 at the developing ring 132 is in smooth transition;

the specific steps can make the outer surface of the developing ring 132 embedded in the developing part 130 and the joint of the developing part 130 on the same horizontal straight line, and make the developing part 130 at the joint smoothly cover the gap at the joint through heat treatment, so that the joint of the developing part 130 of the developing ring 132 is smooth and has no protrusion.

In specific implementation, as shown in fig. 2, a distal end point adjacent to the forming portion 120 is necked down, the developing ring 132 is sleeved outside the distal end point, the developing ring 132 is fastened, the distal end is subjected to heat treatment to form the developing portion 130, and the developing ring 132 is located inside the developing portion 130 after the heat treatment; the molding portion 120 is then heat-treated so that the molding portion 120 is bent. Thus, the outer diameter of the delivery sheath is not increased by the addition of the visualization ring 132, and the delivery sheath is more easily advanced or pushed out of the body vessel without causing damage to the vessel.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An interventional delivery device, comprising: conveying sheath pipe and development ring, its characterized in that, conveying sheath pipe is single layer construction, the distal end of conveying sheath pipe is for being the throat form development portion, development portion distal end outside diameter is less than near-end outside diameter, the embedding of development ring development portion, and after the embedding development ring the development portion outward surface is the level and smooth form.

2. The interventional delivery device of claim 1, wherein: the developing ring is located inside the developing part, and an outer surface of the developing ring is covered by the developing part.

3. An interventional delivery device according to claim 2, wherein: the outer surface of the developing part is free from unevenness.

4. An interventional delivery device according to claim 2, wherein: the outer surface of the developing ring of the developing part is slightly protruded outwards from the outer surface of the developing part or slightly concaved inwards from the outer surface of the developing part, and the joint of the developing ring and the developing part is in smooth transition.

5. The interventional delivery device of claim 1, wherein: the embedding development portion the arbitrary axis of development ring surface with the axis of the surface same position of development portion is on same straight line, just development portion surface is smooth not to have the arch.

6. An interventional delivery device according to any one of claims 1-5, wherein: the developing ring is embedded by the outer surface of the developing part in a hot melting way.

7. The interventional delivery device of claim 6, wherein: the distance between the developing ring and the far end point of the developing part is 2-5 mm.

8. An interventional delivery device according to claim 7, wherein:

the conveying sheath tube further comprises a main body part and a forming part connected with the main body part and the developing part, the forming part is located between the main body part and the developing part and extends and bends from the main body part to the developing part, and the far end of the forming part and the near end of the developing part are of a coaxial structure and have the same outer diameter; and the developing part is also provided with a plurality of developing holes.

9. The interventional delivery device of claim 8, wherein: 1-3 developing parts are embedded into the forming part of the conveying sheath, and the outer surface of the forming part is smooth.

10. The interventional delivery device of claim 9, wherein: the distance between the developing piece and the far end point of the developing part is 10-30 mm.

11. The interventional delivery device of claim 8, wherein: the number of the developing holes is 3-6, and each developing hole is 5-10mm away from the far end of the developing part.

12. The interventional delivery device of claim 8, wherein: the included angle between the tangent line at the far end of the molding part and the axial direction of the main body part is 30 ︒ -150 ︒.

13. The interventional delivery device of claim 9, wherein: the developing ring and the developing piece are made of developable metal.

14. The interventional delivery device of claim 13, wherein: the developable metal is one of stainless steel, tungsten gold, tantalum, platinum and iridium materials.

15. The interventional delivery device of claim 6, wherein: the material of the conveying sheath pipe is one of high-density polyethylene, block polyether amide, polyamide or polyurethane.