CN113058138A

CN113058138A - Micro-catheter capable of being injected without pulling out guide wire

Info

Publication number: CN113058138A
Application number: CN202110455766.9A
Authority: CN
Inventors: 孙丽娜; 毛玉兰; 刘迪冬
Original assignee: Shenzhen Maipuqi Medical Technology Co ltd
Current assignee: Shenzhen Maipuqi Medical Technology Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-07-02

Abstract

The invention relates to the technical field of medical instruments and discloses a micro catheter capable of being injected without pulling out a guide wire, which comprises a catheter I, wherein three catheters II are integrally injected on one side of the catheter I; according to the invention, one end of the first catheter is arranged to be funnel-shaped, and one side of the first catheter is treated by the laser Tip, so that after the micro catheter enters the body of a patient, the first catheter can directly bypass the blood vessel of the patient and be connected with the blood vessel of the patient by using a rounded corner, the situation that the blood vessel or the embolus of the patient can be punctured is avoided, the damage of the first catheter to the blood vessel and the embolus is reduced, the obstacle passing capability of the first catheter is improved, the infusion groove is additionally arranged in the first catheter, and an luer connector and an infusion tube are arranged to convey a contrast medium or a therapeutic agent, so that an operator can directly inject the contrast medium or the therapeutic agent without pulling out a guide wire when conveying the contrast medium or the therapeutic agent to the patient, the treatment time of the patient is shortened, and the convenience of the micro catheter in use is.

Description

Micro-catheter capable of being injected without pulling out guide wire

Technical Field

The invention relates to the technical field of medical instruments, in particular to a micro-catheter capable of being injected without pulling out a guide wire.

Background

Microcatheters are useful for aiding in the delivery of contrast agents as well as therapeutic agents to the peripheral vasculature, coronary vasculature and vascular nervous system.

At present microcatheter is when using, the one end that the microcatheter got into the patient is flat-head type, when flat-head type microcatheter contacted with internal blood vessel of patient or embolus, the blood vessel of patient or embolus are easily stabbed to the little catheter of flat-head type, thereby lead to patient's blood vessel to be stabbed or embolus to be stabbed scattered, thereby the degree of difficulty of follow-up treatment has been improved, and the mesh microcatheter is carrying out contrast medium or therapeutic agent when carrying out the transmission, need operating personnel to take out the inside seal wire of microcatheter from the inside of pipe, then carry out contrast medium or therapeutic agent injection, whole operation not only consumes time and also very loaded down with trivial details, thereby just can prolong the time of treatment, for this reason, propose a microcatheter that can avoid drawing out the seal wire injection, solve the problem among the aforesaid.

Disclosure of Invention

The invention aims to provide a microcatheter capable of being injected without pulling out a guide wire, which has the advantages of being noninvasive and free from pulling out the guide wire, and solves the problems that the blood vessel or embolus of a patient can be damaged when the conventional microcatheter is used, and the guide wire needs to be pulled out when a contrast agent or a therapeutic agent is injected.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a can exempt from to pull out little pipe of seal wire injection, includes pipe one, three pipe two has been moulded plastics to one side an organic whole of pipe one, the one end of pipe one is equipped with the connector, the one end an organic whole of connector has moulded plastics luer connector one, the other end of pipe one is the infundibulate, the laser Tip is made to the other end of pipe one and is handled, the inside of pipe one is equipped with the wire winding, the infusion groove has all been seted up to the inside of pipe one and pipe two, the surface intercommunication in infusion groove has the transfer line, the one end of transfer line runs through to the outside of pipe one and an organic whole has moulded plastics luer connector two, the seal wire conveyer trough has all been seted up to the inside of pipe one and pipe two.

Preferably, the first guide pipe is internally provided with a first support rod and a second support rod respectively, and the top ends and the bottom ends of the first support rod and the second support rod are bolted with the infusion groove.

Preferably, one side of the second supporting rod is provided with a third supporting rod, and the top end and the bottom end of the third supporting rod are bolted with the infusion groove.

Preferably, the number of the second guide pipe is three, one end of the connector, which is close to the second guide pipe, is fixedly sleeved with the inside of the second guide pipe, and the hardness of the first guide pipe and the hardness of the second guide pipe are gradually increased from right to left.

Preferably, the wire winding is made of stainless steel materials, the wire winding is woven in a coil mode, and one end of the wire winding penetrates into the three second guide pipes.

Preferably, the four support rods two are located at the center of the total length of the first guide pipe and the second guide pipe, the four support rods one are far away from one side of the support rod two, and the four support rods three are far away from the other side of the support rod two.

Preferably, the total length of the first conduit and the second conduit is 153cm, and the first conduit and the second conduit are both made of PEbax.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, one end of the first catheter is arranged to be funnel-shaped, and one side of the first catheter is treated by the laser Tip, so that after the micro-catheter enters the body of a patient, the first catheter can directly bypass the blood vessel of the patient and be bolted by using rounded corners, thereby avoiding the situation that the blood vessel or embolus of the patient can be punctured, further reducing the damage of the first catheter to the blood vessel and the embolus, and simultaneously improving the obstacle passing capability of the first catheter;

according to the invention, the purpose of drawing-free guide wire injection is achieved by additionally arranging the infusion solution tank in the catheter I and conveying the contrast medium or the therapeutic agent through the luer connector II and the infusion tube, so that an operator can directly inject the contrast medium or the therapeutic agent without drawing out the guide wire when conveying the contrast medium or the therapeutic agent to a patient, the treatment time of the patient is further shortened, and the convenience of the microcatheter in use is improved.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged cross-sectional view of the first and second conduits in accordance with the present invention;

fig. 4 is a side view of the catheter of the present invention.

In the figure: 1. a first conduit; 2. a second conduit; 3. a connector; 4. a luer connector I; 5. winding; 6. a transfusion tank; 7. a transfusion tube; 8. a luer connector II; 9. a guide wire conveying groove; 10. a first supporting rod; 11. a second supporting rod; 12. and a third supporting rod.

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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. 1-4, a micro catheter capable of being injected without pulling out a guide wire comprises a catheter one 1, three catheters two 2 are integrally injected on one side of the catheter one 1, a connector 3 is arranged at one end of the catheter one 1, a luer connector one 4 is integrally injected at one end of the connector 3, the other end of the catheter one 1 is funnel-shaped, the other end of the catheter one 1 is subjected to laser Tip treatment, a wire winding 5 is arranged inside the catheter one 1, a liquid conveying groove 6 is arranged inside the catheter one 1 and the catheter two 2, the surface of the liquid conveying groove 6 is communicated with a liquid conveying pipe 7, one end of the liquid conveying pipe 7 penetrates through the outer side of the catheter one 1 and is integrally injected with a luer connector two 8, guide wire conveying grooves 9 are arranged inside the catheter one 1 and the catheter two 2, after the micro catheter enters a patient body by setting one end of the catheter one 1 into a funnel shape and performing laser Tip treatment on one side of the catheter one 1, catheter 1 can utilize the direct blood vessel and the bolt of bypassing the patient of mellow corner to avoided patient's blood vessel or embolus can be by the condition of stabbing, and then reduced its damage to blood vessel and embolus, improved its obstacle-passing ability simultaneously, through add infusion tank 6 in catheter 1's inside, and through setting up luer connector two 8 and the mode that transfer line 7 carried contrast medium or therapeutic agent, reached and exempted from to pull out the mesh of seal wire injection, let operating personnel carry out contrast medium or therapeutic agent to the patient and carry out the time, can not pull out the seal wire and directly inject, and then shortened patient treatment time, the convenience of this microcatheter when using has been improved.

Furthermore, four supporting rods I10 and four supporting rods II 11 are respectively arranged inside the guide pipe I1, the top ends and the bottom ends of the supporting rods I10 and the supporting rods II 11 are bolted with the infusion groove 6, and the infusion groove 6 inside the guide pipe I1 is supported by the supporting rods I10 and the supporting rods II 11.

Furthermore, four supporting rods three 12 are arranged on one side of the supporting rod two 11, the top ends and the bottom ends of the supporting rods three 12 are bolted with the infusion groove 6, and the infusion groove 6 in the guide pipe two 2 is supported by the supporting rods three 12.

Furthermore, the number of the second guide pipes 2 is three, one end of the connector 3, which is close to the second guide pipe 2, is fixedly sleeved with the inside of the second guide pipe 2, the hardness of the first guide pipe 1 and the hardness of the second guide pipe 2 are gradually increased from right to left, and the necessary torsion control performance of the micro-guide pipe is ensured by four sections of the first guide pipe 1 and.

Further, the material of the winding wire 5 is specifically stainless steel material, the winding wire 5 is specifically coil weaving, one end of the winding wire 5 penetrates through the inside of the two three catheters 2, and the good kink resistance and the good ovalization of the microcatheter are guaranteed by utilizing the characteristics of the stainless steel material.

Furthermore, four supporting rods two 11 are located at the center of the total length of the conduit one 1 and the conduit two 2, four supporting rods one 10 are away from one side of the supporting rods two 11, four supporting rods three 12 are away from the other side of the supporting rods two 11, the four supporting rods two 11 are located at the center of the total length of the conduit one 1 and the conduit two 2, four supporting rods one 10 are away from one side of the supporting rods two 11, and four supporting rods three 12 are away from the other side of the supporting rods two 11, so that the twisting of the micro-conduit in use can not be affected by the supporting rods one 10, the supporting rods two 11 and the supporting rods three.

Further, the total length of the first catheter 1 and the second catheter 2 is 153cm, the first catheter 1 and the second catheter 2 are made of PEbax, the total length of the first catheter 1 and the second catheter 2 is 153cm, the catheter is suitable for blood vessel conditions of more patients, and 153cm can easily deliver the embolectomy rack to m1 segments of middle cerebral arteries of the patients.

The working principle is as follows: when the catheter 1 is used, the catheter 1 is guided into a patient, when one end of the catheter 1 is in contact with a blood vessel of the patient, the catheter 1 after laser Tip treatment can directly bypass the blood vessel and embolus of the patient by using rounded corners, so that the condition that the blood vessel or embolus can be directly damaged by the catheter 1 is avoided, and the purpose of non-wound is achieved;

when the contrast agent or the therapeutic agent is injected into a patient, an operator can directly connect the injector with the luer connector II 8, then the contrast agent or the therapeutic agent is input into the infusion tank 6 through the injector, when the contrast agent or the therapeutic agent enters the infusion tank 6, the contrast agent or the therapeutic agent can be directly input into the body of the patient through one end of the catheter I1, and medical personnel do not need to draw out the guide wire in the catheter I1, so that the purpose of guide wire injection without pulling out is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A micro-catheter capable of being injected without pulling out a guide wire comprises a catheter I (1), and is characterized in that: the utility model discloses a catheter, including pipe (1), pipe (2), laser Tip, infusion set (6), surface intercommunication has transfer line (7), the one end of pipe (1) is equipped with connector (3), the one end an organic whole of injection moulding of connector (3) has luer joint (4), the other end of pipe (1) is the infundibulate, the laser Tip is handled to the other end of pipe (1), the inside of pipe (1) is equipped with around silk (5), infusion set (6) have all been seted up to the inside of pipe (1) and pipe two (2), the surface intercommunication of infusion set (6) has transfer line (7), the one end of transfer line (7) is run through to the outside of pipe (1) and an organic whole has luer joint two (8) of moulding plastics, seal wire conveyer trough (9) have all been seted up to the inside of pipe (1) and pipe two (2).

2. The pull-free guidewire injectable microcatheter of claim 1, wherein: the four first support rods (10) and the four second support rods (11) are respectively arranged in the first guide pipe (1), and the top ends and the bottom ends of the first support rods (10) and the second support rods (11) are bolted with the infusion groove (6).

3. A pull-free guidewire injectable microcatheter as in claim 2, wherein: and four supporting rods III (12) are arranged on one side of the supporting rod II (11), and the top ends and the bottom ends of the supporting rods III (12) are bolted with the infusion groove (6).

4. The pull-free guidewire injectable microcatheter of claim 1, wherein: the quantity of the second guide pipe (2) is three, one end, close to the second guide pipe (2), of the connector (3) is fixedly sleeved with the inside of the second guide pipe (2), and the hardness of the first guide pipe (1) and the hardness of the second guide pipe (2) are gradually increased from right to left.

5. The pull-free guidewire injectable microcatheter of claim 1, wherein: the winding wire (5) is made of stainless steel materials, the winding wire (5) is woven in a coil mode, and one end of the winding wire (5) penetrates through the inside of the second three guide pipes (2).

6. A pull-free guidewire injectable microcatheter as in claim 3, wherein: the four second support rods (11) are located in the center of the total length of the first guide pipe (1) and the second guide pipe (2), the four first support rods (10) are far away from one side of the second support rods (11), and the four third support rods (12) are far away from the other side of the second support rods (11).

7. The pull-free guidewire injectable microcatheter of claim 1, wherein: the total length of the first conduit (1) and the second conduit (2) is 153cm, and the first conduit (1) and the second conduit (2) are both made of PEbax.