CN116785067A - Cold and hot compress interventional catheter - Google Patents
Cold and hot compress interventional catheter Download PDFInfo
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- CN116785067A CN116785067A CN202310105010.0A CN202310105010A CN116785067A CN 116785067 A CN116785067 A CN 116785067A CN 202310105010 A CN202310105010 A CN 202310105010A CN 116785067 A CN116785067 A CN 116785067A
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0108—Steering means as part of the catheter or advancing means; Markers for positioning using radio-opaque or ultrasound markers
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
- A61F2007/126—Devices for heating or cooling internal body cavities for invasive application, e.g. for introducing into blood vessels
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Biophysics (AREA)
- Hematology (AREA)
- Surgery (AREA)
- Vascular Medicine (AREA)
- Physics & Mathematics (AREA)
- Gastroenterology & Hepatology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Thermal Sciences (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention relates to the technical field of medical catheters, in particular to a cold and hot compress intervention catheter which comprises a main pipe body and a spiral pipe body for circulating cold and hot working media; the spiral pipe body is spirally wound on the outer wall of the main pipe body; two ends of the spiral tube body are respectively communicated with two auxiliary tube bodies; the proximal end of the main pipe body is connected with at least two pushing reinforcing rods; the auxiliary pipe body is arranged on the pushing reinforcing rod. The invention can introduce and convey cold and heat conducting medium with a certain temperature into the auxiliary tube body and conduct the medium on the spiral tube body of the main tube body so as to relieve the vasospasm condition or reduce the blood flow rate, thereby facilitating the smooth operation of the operation, and compared with the traditional mode of adopting medicine assistance or local cold compress and hot compress on the skin surface, the operation is simpler and more efficient, simultaneously the discomfort of a patient can be greatly reduced, and the overall experience of the operation is obviously improved.
Description
Technical Field
The invention relates to the technical field of medical catheters, in particular to a cold and hot compress interventional catheter.
Background
Interventional therapy is a common way of treating intravascular diseases and belongs to a minimally invasive treatment technology. Under the guidance and monitoring of Digital Subtraction Angiography (DSA), CT, ultrasonic and magnetic resonance imaging equipment, a puncture needle, a catheter and other interventional devices are used to guide specific instruments into the lesion part of a human body through natural duct or tiny wound of the human body, and the operation technology of intravascular catheters or other instruments is adopted to diagnose and treat the lesions of the vascular system through specific methods such as selective radiography, embolism, expansion forming, mechanical cleaning, drug delivery and the like.
The whole interventional therapy is conducted under the guidance and monitoring of the image equipment, so that the interventional therapy can accurately and directly reach the lesion part without great trauma, and has the advantages of accuracy, safety, high efficiency, wide application, few complications and the like, and the interventional therapy is relatively mature after long-term development, so that the interventional therapy becomes the first-choice therapeutic method for some diseases.
However, interventional procedures require numerous catheter arrangements, resulting in the physician having to exchange frequently different catheters or instruments, increasing the complexity of the procedure. Meanwhile, due to the introduction of the apparatus and the operation in the blood vessel, or the intervention operation capability level of the doctor, or the vascular condition of the patient, some common problems still exist, such as tissue damage, vascular damage, vasospasm, vascular occlusion, high blood flow rate, or other hemorrhagic complications.
Among them, vasospasm is caused by various causes, and it is common that systemic factors such as excessive mental stress, pain stimulus, hypovolemia, hypotension, inflammation or erroneous use of vasoconstrictors, etc., and local factors such as coldness, mechanical stimulus, surgical stimulus, dryness, intravascular contact with fresh blood, etc. So that smooth muscle of the vessel wall is strongly contracted, and the lumen is narrowed, resulting in reduced blood flow. Severe cases can cause total and permanent occlusion of the lumen. The spasm time is too long, which can cause thrombosis and result in vascular embolism.
On one hand, the problem of high blood flow rate is caused by the blood characteristics of the human body or the individual difference of the vascular conditions of the patients; in another aspect, the arteriosclerotic plaque of the carotid or vertebrobasilar arterial system stenoses the lumen of blood vessels and eddies of blood flow occur. When the blood flow rate is too high, it is liable to cause thrombus fragmentation, thrombus escape, rupture of thin-walled aneurysms or other bleeding risks in diseased vessels. It is also prone to interference with the procedure by the operator during the treatment, such as stent release displacement, severe rocking of microcatheter and microcatheter, or the flushing of embolic coils, leading to embolic failure.
Currently, most of the solutions clinically use drug aids, such as heparin injection, nitroglycerin, etc.; or the local cold compress and hot compress mode on the skin surface is adopted to relieve the vasospasm. However, this approach is not effective, and it is also not possible to accurately control the temperature and evaluate whether the actual effect meets the expectations, and at the same time, it is easy to cause discomfort to the patient, so that the feeling of the surgical experience is also very poor.
Disclosure of Invention
The invention provides the cold compress and hot compress intervention catheter which can be used for cold compress and hot compress blood vessels, and is simple and efficient to use, so as to solve the technical problems of poor effect and poor experience of operation in the intervention operation process of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: an intervention catheter for cold and hot compress comprises a main pipe body and a spiral pipe body for circulating cold and hot working media; the spiral pipe body is spirally wound on the outer wall of the main pipe body; two ends of the spiral tube body are respectively communicated with two auxiliary tube bodies; the proximal end of the main pipe body is connected with at least two pushing reinforcing rods; the auxiliary pipe body is arranged on the pushing reinforcing rod.
The invention is put into the conventional vascular puncture sheath according to a correct mode, and after the guiding catheter, the invention is put into the catheter, the near-end pushing reinforcing rod is pushed, so that the main tube body is conveyed in the guiding catheter until reaching the target position, and is contacted with the inner wall of a blood vessel to be subjected to cold compress or hot compress, the main tube body is connected to external cold and hot circulation equipment through the auxiliary tube bodies, cold and heat conduction mediums with a certain temperature (such as physiological saline heated to a temperature slightly higher than the body temperature or cooled to a temperature slightly lower than the body temperature) are put into and conveyed in the two auxiliary tube bodies, and the spiral tube body on the far-end main tube body is conducted, so that the condition of relieving vasospasm is achieved, or the blood flow rate is reduced, and the operation is convenient. Compared with the traditional mode of adopting medicine assistance or local cold compress and hot compress on the skin surface, the invention has simpler and more efficient operation, and simultaneously can greatly reduce the uncomfortable feeling of patients, so that the overall experience of the operation is obviously improved.
In addition, when other catheters or instruments are required to be introduced, the invention can be used as the extension part of the guide catheter, the product does not need to be withdrawn, the guide catheter can be directly introduced into the lumen of the guide catheter, the frequent exchange operation of the instruments is reduced, the design of the pushing reinforcing rod replaces the conventional tubular design, more catheters or instruments can be compatible and introduced, and the convenience of operation is greatly improved.
Preferably, the proximal end of the main pipe body is provided with a bevel connection, the design of the bevel connection is more convenient for the insertion or the screwing-in of other catheters or instruments, the instrument exchange efficiency can be greatly improved, and the operation time can be further saved.
Preferably, the proximal end of the main pipe body comprises an extending convex part formed by inclined opening, and the pushing reinforcing rod is connected with the extending convex part of the main pipe body, so that the main pipe body is more uniformly stressed in the circumferential direction of the pipe orifice in the pushing process, the pushing and withdrawing of the main pipe body are facilitated, and the service life of the main pipe body can be prolonged.
Preferably, the extending convex part is provided with a bayonet; the orientation of the bayonet is the same as the axial direction of the main pipe body, and the distal end of the pushing reinforcing rod is connected to the position of the bayonet.
Preferably, the pushing reinforcing rods are arranged in two, and the two auxiliary pipe bodies are respectively connected to the two pushing reinforcing rods along the axial directions of the two pushing reinforcing rods.
Preferably, the near end of the auxiliary pipe body is communicated with a pipe seat for connecting cold and hot circulating equipment; the catheter hub has a luer fitting.
Preferably, the pitch of the spiral tube body is 0.5-2.8 mm, the inclination of the spiral tube body arranged on the main tube body is 45-90 degrees, and the inner diameter of the spiral tube body is 0.82-1.64 mm.
Preferably, the inner diameter of the auxiliary pipe body is 0.41 mm-0.97 mm.
Preferably, the spiral tube body is a hose, and when working medium is filled into the spiral tube body, the spiral tube body is in a filling and supporting state; when no working medium is filled into the spiral tube body, the spiral tube body is in a shrunken state.
Preferably, the proximal end and the distal end of the main tube body are both provided with developing rings, and the developing rings positioned at the proximal end of the main tube body are in a bevel shape. The arrangement of the developing ring is beneficial to obviously observing the position, the shape and the length distribution of the main tube body under the radiation, and is convenient for operation.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention can conduct cold/heat and contact with the inner cavity of the blood vessel through the arrangement of the structures such as the spiral tube body, the auxiliary catheter and the like, and can carry out hot compress and smooth muscle of the blood vessel wall when the blood vessel is spastic, thereby relieving the phenomenon that the lumen is narrow or the catheter is difficult to withdraw when the blood vessel is tightly held. When the blood flow rate is too high, cold compress can be performed to reduce the flow rate of nearby blood, so that thrombus fragmentation, thrombus escape, thin-wall aneurysm rupture or other hemorrhagic risks caused by too high blood flow impact force are avoided, and the stent is released and shifted, the microcatheter and the microcatheter are severely swung, or an embolic spring ring is easily flushed away, so that embolism failure is caused;
2) The spiral tube body is uniformly and consistently spirally wound on the outer wall of the main tube body, two ends of the spiral tube body are respectively communicated with the two auxiliary tube bodies to form a uniform tube cavity for unidirectional circulation, and cold and heat conduction mediums (such as heated or cooled physiological saline) with a certain temperature are introduced and conveyed into the auxiliary tube bodies, so that the cold and heat conduction mediums can circulate in the spiral tube body on the main tube body, the cold and heat can be better, more uniformly and more efficiently conducted to the inner cavity of the blood vessel, the temperature is accurately controlled, whether the actual effect meets the expectations or not is evaluated, meanwhile, discomfort of a patient is greatly reduced, and the overall experience of an operation is remarkably improved;
3) Compared with the conventional arrangement that the whole tube body shaft is of a tubular structure, the invention adopts the design of pushing reinforcing rods, namely the non-tube body shaft, and simultaneously is matched with the bevel design of the main tube body, so that more catheters or instruments can be compatible and imported, the condition that doctors frequently exchange different catheters or instruments in the operation process is avoided, and the operation efficiency and effect are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of a cold and hot compress interventional catheter of the present invention;
FIG. 2 is a schematic illustration of the structure of a primary tubular body of the present invention;
FIG. 3 is a schematic illustration of the connection structure of the push stiffener to the main pipe body in the present invention;
FIG. 4 is a schematic view of a connection structure between a pushing stiffener and an extension protrusion according to the present invention;
FIG. 5 is a schematic view of another angle of the cold and hot compress interventional catheter of the present invention;
FIG. 6 is a schematic view of the connection structure of the spiral pipe body and the main pipe body of the present invention;
FIG. 7 is a schematic view of the structure of the invention with the non-filled working fluid in a collapsed condition;
FIG. 8 is a schematic view of the structure of the spiral pipe body of the present invention in a fully expanded state after being filled with working medium;
FIG. 9 is a schematic view showing the connection structure of the spiral pipe body and the sub-pipe body according to the present invention;
FIG. 10 is a view showing the state of use of the cold and hot compress interventional catheter of the present invention;
fig. 11 is a schematic structural view of the main tube body with a developing ring of the present invention.
In the accompanying drawings: 1-a main tube body; 11-an inner liner layer; 12-an intermediate layer; 13-an outer layer; 2-a spiral tube body; 3-an auxiliary pipe body; 31-a catheter hub; 4-pushing a reinforcing rod; 5-extending the convex part; 51-bayonet; 6-developing ring; 101-vascular puncture sheath.
Detailed Description
The present invention will be described in further detail with reference to the drawings, embodiments, and modifications, for the purpose of making the objects, technical solutions, and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
For the purpose of more clear description of the present invention, the terms "distal" and "proximal" are defined herein as terms commonly used in the field of interventional medical devices. Specifically, "distal" refers to the end of the procedure that is distal to the operator, and "proximal" refers to the end of the procedure that is proximal to the operator. Of course, for a single device object, the "proximal" end may also be the end that is proximal to the operator, and the "distal" end may also be the end that is distal to the operator.
In addition, for convenience in describing the individual parts, components, etc., the present invention will be described using "left", "right", "front", "rear", "up", "down", etc. to indicate the positional relationship; the description with serial numbers such as "first", "second", and the like in the present invention is used in principle only to distinguish the described objects, and does not relate to any significance distinction, arrangement distinction. The terms describing the positional relationship in the drawings are merely for illustrative purposes and are not to be construed as limiting the patent, and specific meanings of the terms described above will be understood by those of ordinary skill in the art according to specific circumstances.
The technical scheme of the invention is further specifically described by the following specific embodiments with reference to the accompanying drawings:
example 1
Referring to fig. 1-10, an embodiment 1 of a cold and hot compress interventional catheter is shown, which comprises a main pipe body 1, a spiral pipe body 2, an auxiliary pipe body 3 and a pushing reinforcing rod 4, wherein the spiral pipe body 2 is spirally wound on the outer wall of the main pipe body 1, the auxiliary pipe body 3 is provided with two auxiliary pipe bodies 3, the two auxiliary pipe bodies 3 are respectively communicated with two ends of the spiral pipe body 2, the proximal end of the main pipe body 1 is connected with at least two pushing reinforcing rods 4, and the auxiliary pipe body 3 is connected to the pushing reinforcing rod 4.
Specifically, as shown in fig. 2, the main pipe body 1 includes an inner liner 11, an intermediate layer 12 and an outer layer 13, wherein the inner liner 11, the intermediate layer 12 and the outer layer 13 are sequentially connected from inside to outside, and PTFE is coated on the inner surface of the inner liner 11 to form a cavity with excellent lubricity, so that the inner surface of the inner liner 11 is flat and has lubricity, other instruments can pass through easily, and the adhesion effect of the outer layer material to the inner liner is enhanced by a chemical etching technology.
The middle layer 12 is a metal coil braiding layer, and is made of nickel-titanium alloy or stainless steel, so that the mechanical property of the main pipe body 1 can be enhanced, the main pipe body is more bending-resistant and deformation-resistant, and specifically, the middle layer 12 is mechanically and compositely enhanced by a metal wire material through a braiding technology of 8-64 (8, 16, 32 and 64) ingots.
The outer layer 13 is made of various polymer high molecular materials with biocompatibility, specifically, PEBAX high molecular composite materials are fused in the materials of the outer layer 13, so that the performance of the main pipe body 1 is further improved, the materials of the outer layer are softened in the temperature environment of 220-355 ℃ through a rheological technology, and are rheologically compounded on the inner liner layer 11 to form a triple-compounded catheter, so that the bending deformation resistance of the main pipe body 1 is improved, the flexibility and the supportability of a far end are enhanced, and the main pipe body is convenient to conform to a complicated vascular tortuous path in a body, so that an operator can push and withdraw easily.
As a preferable technical scheme, aiming at the problems of unbalanced transmission performance such as pushing force and torsion, difficult control and the like of a catheter in clinical application, the performance of the main pipe body 1 can be further optimized, the 7-section gradual change type strength structure of the main pipe body 1 is realized by selecting middle section materials with different hardness section by section in a 10-60-degree bevel welding technology mode, the transitivity of the main pipe body 1 is optimized, and the coexistence of near-end toughness and far-end softness is realized.
The inner diameter of the main tube body 1 is 1.41mm to 3.10mm, the inner diameter of the main tube body 1 in this embodiment is 2.0mm, the outer diameter of the main tube body 1 is 1.72mm to 3.45mm, and the outer diameter of the main tube body 1 in this embodiment is 2.3mm.
The main pipe body 1 is a pipe body with two open ends, the pipe orifice at the far end of the main pipe body 1 is a flat orifice, the pipe orifice at the near end of the main pipe body 1 is a bevel orifice, the inclination range of the bevel orifice is 14-73 degrees, and the inclination of the bevel orifice in the embodiment is 45 degrees. The proximal end of the main tube body 1 comprises an extending convex part 5 formed by the inclined opening, and compared with a flat opening, the inclined opening can be convenient for smoother and unobstructed operation when other instruments need to be introduced into the main tube body 1, and the instrument exchange efficiency is improved.
As shown in fig. 3, in this embodiment, two pushing reinforcing rods 4 are provided, the pushing reinforcing rods 4 are metal thin rods made of metal materials such as stainless steel and nickel titanium, the diameter of the pushing reinforcing rods 4 is set to be 0.35 mm-1.2 mm, and the diameter of the pushing reinforcing rods 4 is set to be 0.5mm. The distal end of the push stiffener 4 is connected to the proximal end of the main tube 1, and the axial direction of the push stiffener 4 coincides with the axial direction of the main tube 1. As the preferable technical scheme, the distal end of the pushing reinforcing rod 4 is connected to the extending convex part 5, so that the stress of the main pipe body 1 in the circumferential direction of the pipe orifice in the pushing process is more uniform, the pushing and withdrawing of the main pipe body 1 are facilitated, and the service life of the main pipe body 1 can be prolonged.
As shown in fig. 4, the extending protrusion 5 is provided with a bayonet 51, the bayonet 51 is disposed along the axial direction of the main pipe body 1, and extends out of the edge of the extending protrusion 5, and the distal end of the pushing reinforcing rod 4 extends into the bayonet 51 and is adhered or otherwise fixed at the position of the bayonet 51.
In this embodiment, two bayonets 51 are provided, the two bayonets 51 are spaced apart by a certain distance, and the two pushing reinforcing rods 4 are respectively connected to the positions of the two bayonets 51.
The design of the pushing reinforcing rods 4 is a special tube body shaft design, and the whole tube body shaft of a common catheter is of a tubular structure, and the invention uses two pushing reinforcing rods 4 to replace the proximal end catheter shaft structure of the traditional catheter design, and can be convenient for compatibility and introduction of more catheters or instruments by matching with the bevel connection design of the proximal end of the main tube body 1 through the proximal end tube body shaft non-tubular structure, thereby avoiding the situation that doctors frequently exchange different catheters or instruments in the operation process and improving the operation efficiency and effect.
As shown in fig. 5 and 6, the spiral tube body 2 is uniformly arranged on the outer wall of the main tube body 1 in a spiral winding manner along the circumferential direction of the outer surface of the main tube body 1, and can be fused on the surface of the main tube body by a precise rheological process to form a spiral tube cavity. Specifically, one end of the spiral tube body 2 extends from the bevel of the proximal end of the main tube body 1 to the main tube body 1, and is spirally wound around the outer surface of the main tube body 1 to the flat of the distal end of the main tube body 1 and then wound around the bevel of the proximal end of the main tube body, so that both ends of the spiral tube body 2 are located on one side of the proximal end of the main tube body 1.
The spiral tube body 2 which is spirally wound on the main tube body 1 can transfer cold and heat to the medium more uniformly and efficiently to the inner cavity of the blood vessel, so that the temperature can be controlled more accurately, whether the actual effect meets the expectations or not can be evaluated, meanwhile, the discomfort of a patient is greatly reduced, and the overall experience of an operation is obviously improved.
As a preferable technical scheme, the screw pitch of the spiral tube body 2 is 0.5 mm-2.8 mm, and the screw pitch of the spiral tube body 2 in the embodiment is 0.8mm. The inclination of the spiral tube body 2 is 45 to 90 degrees on the outer wall of the main tube body 1, and the inclination of the spiral tube body 2 is 60 degrees on the outer wall of the main tube body 1 in this embodiment. The inner diameter of the spiral tube body 2 is 0.82mm to 1.64mm, and the inner diameter of the spiral tube body 2 in this embodiment is 1.2mm.
The spiral tube body 2 is a hose, and can be a hollow bag body formed by special TPU, silica gel or rubber and other polymer materials, specifically, the spiral tube body 2 with the consistent cavity inner diameter can be prepared by injection molding or extrusion technology by using silica gel, rubber or special TPU and other polymer materials with biocompatibility.
As shown in fig. 7, when no working medium is charged into the spiral tube body 2, the spiral tube body 2 is in a collapsed state, and as shown in fig. 8, when working medium is charged into the spiral tube body 2, the spiral tube body 2 is in a full and supported state.
As shown in fig. 9, two ends of the spiral tube body 2 are respectively communicated with distal ends of two auxiliary tube bodies 3, and the auxiliary tube bodies 3 can be made of Nylon, PEBAX or PEEK materials, specifically, the auxiliary tube bodies 3 are made of Nylon, PEBAX or PEEK materials through extrusion technology.
In this embodiment, the spiral tube body 2 and the two auxiliary tube bodies 3 are connected through hot melting or laser or ultrasonic welding, so as to form the same cavity capable of circulating, and the cold and heat conduction medium circulates unidirectionally in the cavity, so that the function of cold circulation or heat circulation is realized.
Two vice body 3 bond respectively on two propelling movement reinforcing rods 4, and specifically, vice body 3 bonds on propelling movement reinforcing rod 4 through UV solidification glue, and the axial of vice body 3 is the same with the axial setting of propelling movement reinforcing rod 4, in addition, the length of vice body 3 is unanimous with the length of propelling movement reinforcing rod 4, and the inner chamber of vice body 3 is thinner, and as preferred technical scheme, the internal diameter of vice body 3 is 0.41mm ~ 0.97mm, and the internal diameter of vice body 3 is 0.6mm in this embodiment.
Wherein, the proximal end of the secondary tube body 3 is communicated with a catheter seat 31, in this embodiment, the catheter seat 31 is adhered to the end of the secondary tube body 3, the catheter seat 31 is made of PC or PVC, the catheter seat 31 is provided with a luer connector, and in this embodiment, the catheter seat 31 with the luer connector is prepared by using PC or PVC through an injection molding process. The catheter holder 31 may be connected to an external cold and hot circulation device through a luer connector, and the cold and hot circulation device may introduce and convey a cold and hot conduction medium into the sub-tube body 3 through the catheter holder 31 with a luer connector, so as to realize conduction of cold or heat, and the cold and hot conduction medium may be heated or cooled physiological saline.
The total effective length of the cold and hot working medium through-flow conduit is 130 cm-160 cm, the length of the main pipe body 1 can be set to be 10 cm-60 cm, or the length of the main pipe body 1 is set to be 1/3-1/2 of the total effective length of a product, the length of the pushing reinforcing rod 4 can be set to be 100 cm-150 cm, or the length of the pushing reinforcing rod 4 is set to be 2/3-3/4 of the total effective length of the product.
The specific working principle of the invention is as follows:
after the conventional vascular puncture sheath 101 and the guiding catheter are put in a correct way, the invention is put in, the near-end pushing reinforcing rod 4 is pushed to ensure that the main pipe body 1 is conveyed in the guiding catheter until reaching the target position, the main pipe body is contacted with the inner wall of a blood vessel needing cold compress or hot compress, the main pipe body is connected to external cold and heat circulation equipment through the luer joints of the two catheter seats 31, cold and heat conduction mediums with a certain temperature (such as physiological saline heated to be slightly higher than the body temperature or cooled to be slightly lower than the body temperature) are put in and conveyed in the two auxiliary pipe bodies 3, and after the spiral pipe body 2 on the far-end main pipe body 1 is conducted for 1 to 3 minutes, the observation effect is achieved.
The temperature of the cold and hot circulation equipment can be regulated and controlled according to the requirement to control the temperature of the far-end spiral tube body 2 and regulate and control the circulation and introduction time of cold and hot working media until the expected effect is met, the vasospasm condition is relieved, or the blood flow rate is reduced, so that the operation is facilitated.
When other catheters or instruments are required to be introduced, the invention can be used as the extension part of the guide catheter, the product does not need to be withdrawn, and the guide catheter can be directly introduced into the lumen of the guide catheter, so that the frequent exchange operation of the instruments is reduced.
Example 2
This embodiment is an embodiment 2 of a cold and hot compress interventional catheter, which is different from embodiment 1 in that: as shown in fig. 11, in this embodiment, the proximal end and the distal end of the main tube body 1 are both flat, the proximal end and the distal end of the main tube body 1 are both provided with a developing ring 6, specifically, the distal end of the main tube body 1 is equipped with a flat developing ring, the proximal end of the main tube body 1 is equipped with a bevel developing ring 6, and the developing ring 6 in this embodiment is a platinum iridium alloy developing ring.
Under the condition that the developing rings 6 are arranged at the proximal end and the distal end of the main pipe body 1, the distal end of the pushing reinforcing rod 4 is connected with the bevel-shaped developing ring 6, and correspondingly, the protruding part of the bevel-shaped developing ring 6 is provided with a bayonet matched and clamped with the pushing reinforcing rod 4. Specifically, before the push reinforcing rod 4 is installed, polishing, stamping and electroplating lamp process treatment can be performed, the distal end of the push reinforcing rod 4 is in butt joint with a bayonet on the developing ring 6, and then 50kw-356kw lattice laser welding equipment is used for welding and fixing at the butt joint position.
The development rings 6 are arranged at the proximal end and the distal end of the main tube body 1, so that the position, the shape and the length distribution of the main tube body 1 can be obviously observed under rays, and the operation of surgery is facilitated.
Example 3
This embodiment is embodiment 3 of a cold and hot compress interventional catheter, which differs from embodiment 1 in that: in this embodiment, the cold-heating working substance flow conduit is coated with a hydrophilic coating, and the hydrophilic coating may be a PVP hydrophilic coating, a PAA hydrophilic coating, or a PEO hydrophilic coating, or a hydrophilic coating with an anticoagulant is used to further prevent thrombus formation.
Specifically, the head and tail pipe orifices of the main pipe body 1 are plugged with silica gel plugs, then the main pipe body is hung on a chuck of a coating device, the whole cold and hot working medium through-flow guide pipe is immersed into a hydrophilic coating solution, lifted and lifted at a slower speed of 0.11 mm/s-0.82 mm/s, and finally ultraviolet light is used for irradiating for 1 min-10 min, so that the coating is solidified.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A cold and hot compress interventional catheter, which is characterized in that: comprises a main pipe body (1) and a spiral pipe body (2) for circulating cold and hot working media; the spiral tube body (2) is spirally wound on the outer wall of the main tube body (1); two ends of the spiral tube body (2) are respectively communicated with two auxiliary tube bodies (3); the proximal end of the main pipe body (1) is connected with at least two pushing reinforcing rods (4); the auxiliary pipe body (3) is arranged on the pushing reinforcing rod (4).
2. A cold and hot compress interventional catheter according to claim 1, wherein: the proximal end of the main pipe body (1) is provided with a bevel connection.
3. A cold and hot compress interventional catheter according to claim 2, wherein: the proximal end of the main pipe body (1) comprises an extending convex part (5) formed by inclined opening, and the pushing reinforcing rod (4) is connected with the extending convex part (5) of the main pipe body (1).
4. A cold and hot compress interventional catheter according to claim 3, wherein: a bayonet (51) is arranged on the extension convex part (5); the orientation of the bayonet (51) is the same as the axial direction of the main pipe body (1), and the distal end of the pushing reinforcing rod (4) is connected to the position of the bayonet (51).
5. A cold and hot compress interventional catheter according to claim 1, wherein: the pushing reinforcing rods (4) are arranged in two, and the two auxiliary pipe bodies (3) are respectively connected to the two pushing reinforcing rods (4) along the axial direction of the two pushing reinforcing rods (4).
6. A cold and hot compress interventional catheter according to claim 1, wherein: the near end of the auxiliary pipe body (3) is communicated with a pipe seat (31) for connecting cold and hot circulating equipment; the catheter hub (31) is provided with a luer fitting.
7. A cold and hot compress interventional catheter according to any of claims 1-6, wherein: the pitch of the spiral tube body (2) is 0.5-2.8 mm, the inclination of the spiral tube body (2) arranged on the main tube body (1) is 45-90 degrees, and the inner diameter of the spiral tube body (2) is 0.82-1.64 mm.
8. A cold and hot compress interventional catheter according to claim 7, wherein: the inner diameter of the auxiliary pipe body (3) is 0.41-0.97 mm.
9. A cold and hot compress interventional catheter according to any of claims 1-6, wherein: the spiral tube body (2) is a hose, and when working medium is filled into the spiral tube body (2), the spiral tube body (2) is in a filling and supporting state; when no working medium is filled into the spiral tube body (2), the spiral tube body (2) is in a shrunken state.
10. A cold and hot compress interventional catheter according to claim 1, wherein: the proximal end and the distal end of the main pipe body (1) are respectively provided with a developing ring (6), and the developing rings (6) positioned at the proximal end of the main pipe body (1) are in a bevel shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310105010.0A CN116785067A (en) | 2023-02-09 | 2023-02-09 | Cold and hot compress interventional catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310105010.0A CN116785067A (en) | 2023-02-09 | 2023-02-09 | Cold and hot compress interventional catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116785067A true CN116785067A (en) | 2023-09-22 |
Family
ID=88042822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310105010.0A Pending CN116785067A (en) | 2023-02-09 | 2023-02-09 | Cold and hot compress interventional catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116785067A (en) |
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2023
- 2023-02-09 CN CN202310105010.0A patent/CN116785067A/en active Pending
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