CN114796819A - A kind of expander - Google Patents
A kind of expander Download PDFInfo
- Publication number
- CN114796819A CN114796819A CN202210586638.2A CN202210586638A CN114796819A CN 114796819 A CN114796819 A CN 114796819A CN 202210586638 A CN202210586638 A CN 202210586638A CN 114796819 A CN114796819 A CN 114796819A
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- China
- Prior art keywords
- cavity
- controller
- rod body
- dilator
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention provides a dilator comprising: the device comprises a rod body and a controller, wherein one end of the rod body is connected with the controller; the rod body is provided with a first cavity and a second cavity, the first cavity is communicated with two ends of the rod body, and the second cavity is communicated with two ends of the rod body; the first cavity is used for guiding the wire, and the second cavity is internally provided with a bending control wire; a first inlet communicated with the first cavity is formed in one end, far away from the rod body, of the controller, a second inlet communicated with the second cavity is further formed in one end, far away from the rod body, of the controller, and a first outlet communicated with the first cavity is formed in one end, far away from the controller, of the rod body; one end of the bending control wire is connected with the controller, and the other end of the bending control wire is connected with one end of the rod body, which is far away from the controller, through the second cavity; the controller is used for controlling the stretching of the bent wire. According to the invention, the second cavity and the bending control wire are arranged on the rod body, the controller can control the rod body to actively bend, and the risk of puncturing blood vessels is reduced.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an expander.
Background
With the aging population, patients with structural heart disease are increasing. Often patients are accompanied by some vascular disease in addition to structural heart disease, requiring dilation of the blood vessels to treat the disease. In the prior art, blood vessels are expanded primarily by dilators. However, the dilator in the prior art cannot adjust the curvature at the far end, and mainly bends by adapting to the inner wall of the blood vessel, and because the blood vessel of a patient is more fragile relative to healthy people, the dilator has a larger risk of puncturing the blood vessel due to too high hardness, and is not beneficial to the treatment of the patient.
It can be seen that the related art has a problem in that the dilator has a greater risk of puncturing the blood vessel.
Disclosure of Invention
The embodiment of the invention provides a dilator, which aims to solve the problem that in the related art, the risk of puncturing a blood vessel is high.
To achieve the above object, an embodiment of the present invention provides a dilator, including: a rod body and a controller, wherein,
one end of the rod body is connected with the controller;
the rod body is provided with a first cavity and a second cavity, the first cavity is communicated with two ends of the rod body, and the second cavity is communicated with two ends of the rod body;
the first cavity is used for guiding a wire, and a bending control wire is arranged in the second cavity;
a first inlet communicated with the first cavity is formed in one end, far away from the rod body, of the controller, and a first outlet communicated with the first cavity is formed in one end, far away from the controller, of the rod body;
one end of the bending control wire is connected with the controller, and the other end of the bending control wire is connected with one end of the rod body, which is far away from the controller, through the second cavity;
the controller is used for controlling the stretching of the bending control wire.
As an optional implementation manner, the rod body is further provided with a third cavity, and the third cavity is communicated with two ends of the rod body;
a second inlet communicated with the third cavity is formed in one end, far away from the rod body, of the controller, and a second outlet communicated with the third cavity is formed in one end, far away from the controller, of the rod body;
the third lumen is for delivering contrast agent.
As an optional embodiment, the rod body comprises a first section, a second section and a third section, and the first section, the second section and the third section are sequentially arranged on the rod body in a direction away from the controller;
the hardness of the first section, the hardness of the second section, and the hardness of the third section decrease.
As an optional implementation manner, a developing ring is arranged at one end of the rod body, which is far away from the controller, and the bending control wire is fixedly connected with the developing ring.
In an alternative embodiment, the developing ring is made of stainless steel, and the bend-controlling wires are made of stainless steel.
As an alternative embodiment, the end of the rod body away from the controller is provided with a taper.
As an alternative embodiment, the material of the rod body is polytetrafluoroethylene material containing barium salt.
As an alternative embodiment, the surface of the rod body is provided with a coating layer, and the coating layer is made of polyvinylpyrrolidone hydrophilic material.
As an optional embodiment, the surface of the controller is provided with a knob, the knob is rotatably connected with the controller, and the bending control wire is wound on the surface of the knob to be fixed.
One of the above technical solutions has the following advantages or beneficial effects:
according to the embodiment of the invention, the first cavity and the second cavity are arranged in the rod body, and the bending control wire is arranged in the second cavity, so that an operator can control the bending control wire to stretch and retract through the controller to drive the rod body to be bent and changed, and the risk that a blood vessel is punctured by the rod body in the implantation process can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of a natural state of a dilator according to an embodiment of the present invention;
FIG. 2 is a structural schematic view of a curved state of a dilator according to an embodiment of the present invention;
FIG. 3 is a schematic view of the natural state of another dilator provided by embodiments of the present invention;
FIG. 4 is a schematic view of the natural state of another dilator provided by embodiments of the present invention;
FIG. 5 is a schematic view of a distal end of a shaft according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the connection of a bend-controlling wire to a developer ring according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, 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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a natural state of a dilator according to an embodiment of the present invention, and as shown in fig. 1, the dilator according to the embodiment of the present invention includes: a stick body 20 and a controller 10, wherein,
one end of the rod body 20 is connected with the controller 10;
the rod body 20 is provided with a first cavity 201 and a second cavity 202, the first cavity 201 is communicated with two ends of the rod body 20, and the second cavity 202 is communicated with two ends of the rod body 20;
the first cavity 201 is used for guiding a wire, and a bending control wire is arranged in the second cavity 202;
a first inlet 101 communicated with the first cavity 201 is arranged at one end of the controller 10 far away from the rod body 20, and a first outlet 204 communicated with the first cavity 201 is arranged at one end of the rod body 20 far away from the controller 10;
one end of the bending control wire is connected with the controller 10, and the other end of the bending control wire is connected with one end of the rod body 20 far away from the controller 10 through the second cavity 202;
the controller 10 is used for controlling the stretching of the bent wire.
In this embodiment, the second cavity 202 is disposed in the rod 20, the bending control wire is disposed in the second cavity 202, and the controller 10 controls the bending control wire to extend and retract, so as to drive the distal end of the rod 20 to bend or straighten. The distal end is the end of the shaft body 20 far away from the controller 10, and the distal end is the end close to the blood vessel in the process of implanting the dilator into the blood vessel. The operator controls the stretching of the bending control wire through the controller 10, so that the risk of puncturing the inside of the blood vessel can be effectively reduced.
As shown in fig. 2, in the natural state, the rod body 20 keeps the straight state, and the bending-controlling wire is also in the loose state at this time; when the bending is needed, the controller 10 controls the bending control wire to contract, the bending control wire controls the rod body 20 at the far end to bend towards the side edge, the bending degree can be adjusted according to the contraction quantity of the bending control wire, and the larger the contraction quantity, the larger the bending degree of the far end is.
In addition, the guide wire arranged in the first cavity 201 plays a role of guiding in the process of injecting the dilator into the blood vessel, the guide wire passes through the controller 10 and the shaft body 20 through the first inlet 101 and the first outlet 204, and the shaft body 20 can be guided at the far end. Wherein, the seal wire is the soft enough material, can take place to buckle along vascular inner wall, avoids the seal wire to puncture blood vessel.
The rod body 20 is formed by an extrusion process, and the first cavity 201 and the second cavity 202 are closed channels. The size of the first cavity 201 is matched with that of the guide wire, and the guide wire can smoothly move in the first cavity 201; similarly, the size of the second cavity 202 is adapted to the size of the bending-control wire, and the bending-control wire can smoothly move in the second cavity 202.
As an optional embodiment, the rod 20 is further provided with a third cavity 203, and the third cavity 203 is communicated with two ends of the rod 20;
a second inlet 102 communicated with the third cavity 203 is formed in one end, far away from the rod body 20, of the controller 10, and a second outlet 205 communicated with the third cavity 203 is formed in one end, far away from the controller 10, of the rod body 20;
the third cavity 203 is used for delivering contrast agent.
In the embodiment, the third cavity 203 is used for injecting the contrast medium into the blood vessel, so that the blood vessel can be developed under rays, and an operator can observe the condition of the blood path conveniently, thereby more accurately controlling the relative position of the dilator and the blood path and reducing the risk of puncturing the blood vessel.
Wherein, contrast agent is injected into the dilator through the second inlet 102 of the controller 10, the distal end of the dilator is provided with the second outlet 205, and the contrast agent is injected into the blood vessel through the second outlet 205, so as to visualize the blood vessel in need of implanting the dilator.
As an alternative embodiment, the rod body 20 includes a first section 21, a second section 22 and a third section 23, and the first section 21, the second section 22 and the third section 23 are sequentially arranged on the rod body 20 in a direction away from the controller 10;
the hardness of the first section 21, the hardness of the second section 22 and the hardness of the third section 23 decrease.
In this embodiment, the shaft body 20 is provided with three sections with decreasing hardness, so that the shaft body 20 can be better bent in the process of being implanted into the body, and the risk of puncturing the blood vessel is further reduced.
Wherein, the first section 21 and the second section 22 have high hardness and can effectively conduct force; while the third section 23 has the least stiffness and less radial strength and can be bent more easily.
Wherein the shaft 20 can be provided with different diameters to match different vessels of different patients, in this example the maximum diameter of the shaft 20 is 20F and the minimum diameter of the shaft 20 is 12F. Where F is the unit of catheter, 1F ≈ 0.33 mm.
In addition, in the present embodiment, the rod body 20 may be a tapered structure with a decreasing diameter, in which the diameter of the end close to the controller 10 is the largest, and the diameter of the end far from the controller 10 is the smallest, as shown in fig. 3. Wherein, the diameter of the end of the rod body 20 far away from the controller 10 is the smallest, the radial strength is smaller, and the rod body can be bent more easily; meanwhile, the diameter of the end of the rod body 20 close to the controller 10 is larger, so that the blood vessel can be effectively expanded.
Wherein the maximum diameter of the rod body 20 with the cone-shaped structure is 20F, and the minimum diameter of the rod body 20 with the cone-shaped structure is 12F.
In addition, in this embodiment, the rod body 20 may be formed as two sections of a cone and a cylinder with decreasing diameters, where the end close to the controller 10 is a cone with the largest diameter, and the end far from the controller 10 is a cylinder with the smallest diameter, as shown in fig. 4. The diameter of one end of the rod body 20 far away from the controller 10 is the smallest, so that the purpose of reducing the radial strength can be realized, and the rod body can be bent more easily; meanwhile, the diameter of the end of the rod body 20 close to the controller 10 is larger, so that the blood vessel can be effectively expanded.
Wherein the maximum diameter of the rod body 20 with the conical structure is 20F, the minimum diameter of the rod body 20 with the conical structure is 16F, and the diameter of the cylinder is 12F.
As an alternative embodiment, as shown in fig. 5, the rod 20 is provided with a developing ring 24 at an end of the rod 20 away from the controller 10, and the bending-controlling wire is connected and fixed with the developing ring 24.
In this embodiment, the developing ring 24 can be developed in the radiation, the operator can judge the specific position of the distal end of the dilator according to the developing ring 24, and the operator can observe the inner wall of the blood vessel and the position of the developing ring 24 in the radiation by matching with the contrast agent injected into the blood vessel by the third cavity 203, and then the controller 10 controls the bending of the rod body 20, so that the risk of puncturing the blood vessel by the dilator can be effectively reduced.
The bending control wire is fixed on the developing ring 24, and the stretching of the bending control wire can be converted into radial tension through the developing ring 24, so that the bending of the far end of the rod body 20 is realized.
In an alternative embodiment, the developing ring 24 is made of stainless steel and the bend-controlling wires are made of stainless steel.
In the present embodiment, the developing ring 24 and the bend-controlling wire are made of stainless steel material, and can be developed in the ray while maintaining the structural strength. The stainless steel material may be 304 stainless steel, or may be other materials having the same effect.
The bending-control wire is connected to only one position of the developing ring 24, and the connecting position of the bending-control wire and the developing ring 24 is marked on the controller 10, which is the opposite direction of the bending of the rod 20, as shown in fig. 6. The connecting position of the bending control wire and the developing ring 24 is fixed and marked, so that the situation that the inner wall of the blood vessel is punctured due to the fact that the bending direction of the dilator is inconsistent with the assumed direction caused by misoperation of an operator is prevented.
As an alternative embodiment, the end of the stick body 20 away from the controller 10 is tapered.
In the present embodiment, the end of the shaft 20 away from the controller 10 is tapered, so that the risk of puncturing the blood vessel when the distal end of the shaft 20 is in contact with the inner wall of the blood vessel can be reduced.
As an alternative embodiment, the material of shaft 20 is a polytetrafluoroethylene material containing barium salt.
In this embodiment, the shaft body 20 cannot be made of a material having too high hardness, such as stainless steel, in the process of being implanted into a blood vessel. The material of the rod body 20 is made of polytetrafluoroethylene material containing barium salt, so that the rod body 20 can be bent in a blood vessel, and the inner wall of the blood vessel cannot be punctured due to the fact that the hardness of the rod body 20 is too high when the rod body is in contact with the inner wall of the blood vessel.
Wherein, the barium salt can be developed in the ray, so that the operator can conveniently judge the position of the dilator in the blood vessel.
As an alternative embodiment, the surface of the rod body 20 is provided with a coating layer, which is a polyvinylpyrrolidone hydrophilic material.
In this embodiment, the surface of the rod body 20 is provided with the hydrophilic coating, so that the friction force of the dilator in the implantation process can be effectively reduced, and the situation that the dilator is difficult to implant due to too large friction force or the inner wall of the blood vessel is punctured by too large force of an operator is reduced.
As an alternative embodiment, the surface of the controller 10 is provided with a knob 11, the knob 11 is rotatably connected with the controller 10, and the bending control wire is wound on the surface of the knob 11 and fixed.
In this embodiment, the stretching of the bend-controlling wire can be controlled by rotating the knob 11, so that the operator can control the stretching of the distal end of the dilator at the proximal end.
In addition, the controller 10 may also be provided with a movable slider, and one end of the bending control wire is connected with the movable slider, so that the effect of controlling the stretching of the distal end of the dilator at the proximal end by an operator can be realized.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A dilator, comprising: a rod body and a controller, wherein,
one end of the rod body is connected with the controller;
the rod body is provided with a first cavity and a second cavity, the first cavity is communicated with two ends of the rod body, and the second cavity is communicated with two ends of the rod body;
the first cavity is used for guiding a wire, and a bending control wire is arranged in the second cavity;
a first inlet communicated with the first cavity is formed in one end, far away from the rod body, of the controller, and a first outlet communicated with the first cavity is formed in one end, far away from the controller, of the rod body;
one end of the bending control wire is connected with the controller, and the other end of the bending control wire is connected with one end of the rod body, which is far away from the controller, through the second cavity;
the controller is used for controlling the stretching of the bending control wire.
2. The dilator of claim 1, wherein the shaft further has a third cavity, the third cavity communicating with both ends of the shaft;
a second inlet communicated with the third cavity is formed in one end, far away from the rod body, of the controller, and a second outlet communicated with the third cavity is formed in one end, far away from the controller, of the rod body;
the third lumen is for delivering contrast agent.
3. A dilator according to claim 1 or 2, wherein said shaft comprises a first section, a second section and a third section, said shaft being in the order of said first section, said second section and said third section in a direction away from said control;
the hardness of the first section, the hardness of the second section, and the hardness of the third section decrease.
4. The dilator according to claim 1 or 2, wherein a developing ring is arranged on one end of the rod body away from the controller, and the bending control wire is fixedly connected with the developing ring.
5. The dilator of claim 5, wherein the material of the developing ring is 304 stainless steel material, and the material of the bend-controlling wires is stainless steel material.
6. The dilator according to claim 1 or 2, wherein an end of the shaft body remote from the controller is provided with a taper.
7. The dilator of claim 1 or 2, wherein the material of the rod body is a polytetrafluoroethylene material containing barium salt.
8. The dilator of claim 1 or 2, wherein a surface of the shaft body is provided with a coating, and the coating is a polyvinylpyrrolidone hydrophilic material.
9. The dilator of claim 1, wherein a surface of the controller is provided with a knob, the knob is rotatably connected with the controller, and the bending control wire is wound on the surface of the knob to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586638.2A CN114796819A (en) | 2022-05-26 | 2022-05-26 | A kind of expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586638.2A CN114796819A (en) | 2022-05-26 | 2022-05-26 | A kind of expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114796819A true CN114796819A (en) | 2022-07-29 |
Family
ID=82520187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210586638.2A Pending CN114796819A (en) | 2022-05-26 | 2022-05-26 | A kind of expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114796819A (en) |
-
2022
- 2022-05-26 CN CN202210586638.2A patent/CN114796819A/en active Pending
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