CN216061621U - Novel liver malignant tumor medicine injection catheter - Google Patents
Novel liver malignant tumor medicine injection catheter Download PDFInfo
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- CN216061621U CN216061621U CN202022534835.9U CN202022534835U CN216061621U CN 216061621 U CN216061621 U CN 216061621U CN 202022534835 U CN202022534835 U CN 202022534835U CN 216061621 U CN216061621 U CN 216061621U
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Abstract
The utility model discloses a novel liver malignant tumor medicament injection catheter, which is provided with a hollow cavity and comprises a straight pipe part and a free curling part connected with the straight pipe part, wherein the end part of the straight pipe part is provided with a catheter top end, and the end part of the free curling part is provided with a catheter tail end; at least one injection hole is arranged on the side wall of the free curling part close to the tail end of the catheter. The injection catheter of the utility model is adopted, and the artificial shunt channel positioned between the hepatic vein and the main branch of the portal vein in the liver is established by guiding the guide wire, so as to provide an access channel for the catheter of the utility model, introduce the catheter into the blood supply portal vessel of the liver focus, and continuously inject the medicine to the liver tumor focus through the external catheter.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a catheter for injecting a liver malignant tumor medicament.
Background
The interventional therapy of liver cancer is a kind of local chemotherapy in which anticancer medicine or suppository is injected into femoral artery via femoral artery intubation. At present, in interventional therapy of liver cancer, a patient must lie on his side to treat the liver cancer, the pain degree of the patient is high in physical or mental aspects, and the patient is inconvenient to lie in bed because the pipeline is positioned at the thigh part after each treatment. In this way, the injection of large doses of chemotherapeutic drugs in a short time has significant side effects, among which the effects on the digestive tract are the greatest, giving the patient a feeling of discomfort. In addition, the dual blood supply of liver mainly comes from two parts, namely 75% of portal vein and 25% of hepatic artery, liver cancer mainly depends on hepatic artery, portal vein blood supply is provided around single cancer block, cancer cells can still survive in a small amount, and for multiple metastasis in liver, artery lack of blood supply, so the treatment mode is not ideal for liver metastasis tumor. Moreover, in actual operation, the operation requirements are high, and the complexity is high.
The technicians in the field are always exploring and adopting a brand-new operation mode to reduce the pain of patients, and simultaneously, a more convenient and efficient operation mode is used to achieve a better treatment effect and meet the actual requirements of different disease conditions.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a novel liver malignant tumor drug injection catheter, wherein the catheter comprises a straight pipe part and a free curling part connected with the straight pipe part, the end part of the straight pipe part is a drug injection inlet, the end part of the free curling part is a drug injection outlet, and the catheter is further provided with a hollow cavity penetrating through the drug injection inlet and the drug injection outlet; a plurality of injection holes are formed in the side wall of the free curling part close to the medicine injection outlet; wherein the degree of crimp of the free crimp portion is 60-80%.
Wherein, the injection hole is round or oval.
Wherein, the number of the injection holes is three.
Wherein, the plurality of injection holes are arranged on the side wall of the free curling part in a line shape along the radial direction.
Wherein the injection holes are arranged on the side wall at the inner side of the free curling part in a triangular shape.
Wherein, the hollow cavity of the catheter can accommodate a guide wire to pass through.
Wherein the cross-sectional diameter of the conduit is 3 mm.
Wherein the pipe wall thickness of the conduit is 0.5 mm.
Wherein the length of the straight pipe part is 810-910mm, and the stretching length of the free curling part is 35-50 mm.
Wherein the straight tube portion has a length of 860mm, and the free curl portion has a stretched length of 40 mm.
Wherein the free curl portion has a curl degree of 70%.
By adopting the catheter disclosed by the utility model, in the operation process, a patient does not need to lie on one side for a long time, so that the pain of the patient in the treatment process is greatly reduced, the operation complexity of medical workers is reduced, and the working efficiency is improved. Under the guidance of X-ray fluoroscopy, the injection catheter is introduced into the human body through the jugular vein, and a channel formed by the intrahepatic portal vein and the jugular vein operation penetrates to the focus to establish an artificial shunt channel positioned between the hepatic vein and the main branch of the portal vein in the liver, so that the permanent smoothness of the channel is maintained, the portal hypertension is reduced, the esophageal fundus varices and rupture bleeding of the fundus vein are effectively controlled and prevented, and the ascites absorption is promoted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
FIG. 1 is a schematic view of the overall structure of a novel hepatoma drug injection catheter according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a novel hepatic malignant tumor drug injection catheter in a use state according to an embodiment of the utility model.
Reference numerals
Detailed Description
The technical scheme of the utility model is described in detail in the following with reference to the embodiment of the attached drawings.
As shown in fig. 1, the injection catheter 100 of the present disclosure includes a straight tube portion 110 and a free-curled portion 120, and the straight tube portion 110 and the free-curled portion 120 are defined as two parts of the injection catheter 100, and are actually integrally formed, and may be made of a polyurethane material. The catheter 100 comprises a catheter tip 111 at one end of the straight tube portion 110 and a catheter tip 121 at one end of the free curl portion 120. A hollow cavity 101 is formed between the top end and the end, and the hollow cavity 101 is used for accommodating the guide wire and conveying the liquid medicine.
In a surgical procedure, as shown in fig. 2, a guidewire 200 may be threaded into the hollow lumen 101 of the catheter from the catheter tip 111 to the catheter tip 121. At this moment, the free curling part 120 is straightened under the action of the guide wire, the injection catheter 100 is introduced into the human body through the jugular vein under the guidance of X-ray fluoroscopy, the free curling part 120 is inserted into the communication part of the hepatic portal vein and the jugular vein, and the free curling part 120 has the flexible contraction and expansion capacity, so that the free curling part can contract automatically at the narrow part and expand automatically in the wide portal vein and is attached and fixed inside the liver. The free curled part 120 reaches the appointed focus through the channel formed by the portal vein and the jugular vein in the liver, namely the blood supply portal vein of the liver tumor of the patient, and at the moment, the guide wire 200 is drawn out from the top end 111 of the catheter, thus completing the positioning of the injection catheter. To facilitate insertion and withdrawal of the guide wire 200, the guide wire may be slightly longer than the overall length of the injection catheter 100.
In use, the straight tube portion 110 is secured at the patient's external neck using conventional means. The catheter tip 111 is connected to a drug pump or the like known in the medical field, and drugs are continuously injected through the catheter tip 111 into the lesion through the tube by a continuous infusion method.
In order to achieve a better injection effect, besides the medicine liquid is output from the tail end 121 of the catheter, at least one injection hole 122 is arranged at the position, close to the tail end 121 of the catheter, of the bending part of the free curling part 120 and is arranged on the side wall of the free curling part 120, when the free curling part 120 is attached and fixed at a specified position of the liver in a free curling state, the injection hole 122 is just arranged on the curled inner side wall and can be close to or attached to a focus as much as possible, the medicine liquid is injected to the focus, and a quick, direct and stable injection effect is achieved. In some embodiments, the injection hole 122 may be provided in plurality, for example, three. For better injection, the shape of the injection hole 122 may be designed differently, such as circular, oval or any other shape that can achieve a smooth drug discharge. Of course, the arrangement design of the plurality of injection holes 122 may be selected according to the location, size and shape of the lesion. The utility model discloses two preferred embodiments. In one mode, the injection holes 122 are arranged in a line along the side wall of the catheter in the radial direction, and in another mode, the injection holes 122 can be arranged on the side wall of the catheter in a triangular shape, so that more precise injection is realized. Whatever layout is adopted, the design concept of the utility model is within the scope of the protection.
When the injection is completed, the free crimping portion 120 of the catheter is contracted, and the operator only needs to directly pull out the pipeline, and the position inserted into the catheter will heal by itself. By the mode, the pain of a patient in treatment is greatly reduced, meanwhile, the medicine can be accurately injected for treatment, the dosage of the medicine can be controlled, and the treatment effect is improved.
According to the technical scheme of the utility model, the diameter of the section of the injection catheter 100 is set to be 3mm, the thickness of the tube wall is 0.5mm, the straight tube part 110 is made of a polyurethane material with a large stress coefficient, and the free curling part 120 is made of a polyurethane material with a low stress coefficient and high flexibility. The length of the straight tube part can be set between 810 mm and 910mm, injection catheters with different sizes can be selected according to the body length of a patient and actual needs, and the stretching length of the free curling part 120 can be adaptively adjusted to 35-50 mm. In a preferred embodiment, the straight tube portion has a length of 860mm, and the free curl portion has a stretched length of 40 mm. The degree of curling of the free curl portion 120 is set to be between 60 and 80%, preferably 70%.
The utility model adopts the way that the tail end of the pipeline is bent, can be directly inserted into the position of the liver tumor of a patient, is automatically fixed in the portal vein, is fixed outside the body of the patient through the top end of the catheter, and continuously injects the medicine to the focus. The injection catheter of the utility model is adopted, a manual shunt channel positioned between the hepatic vein and the main branch of the portal vein in the liver is established by the guide wire passing through and guiding, an access channel is provided for the catheter of the utility model, the catheter is introduced into the blood supply portal vessel of the liver focus, and the medicine is continuously injected to the liver tumor focus through the external catheter.
The novel liver malignant tumor medicament injection catheter has at least one of the following effects:
1. the top end 111 of the injection catheter is fixed on the neck of the patient for continuous injection of the medicine, so that the patient does not need to lie straight and on the side, and the pain of the patient in the treatment process is reduced.
2. The catheter tip 121 of the injection catheter is in a freely coiled configuration and the coiled portion in the side wall of the catheter provides the drug injection orifice 122 so that the free coil 120 can attach itself and be fixed within the liver. After the treatment is finished, an operator only needs to draw out the pipeline, the wound can be healed by self, and the pain of a patient is reduced.
3. The femoral artery intubation intervention is avoided, the femoral artery intubation intervention is passed through a channel communicated between the portal vein and the jugular vein of the liver, the side effect of treatment on patients is reduced, the treatment indication of malignant tumor of the liver is expanded, and the method is not only suitable for patients with single cancer block, but also suitable for the application of patients with multiple metastasis in the liver.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (11)
1. The novel liver malignant tumor medicine injection catheter is characterized by comprising a straight pipe part and a free curling part connected with the straight pipe part, wherein the end part of the straight pipe part is a medicine injection inlet, the end part of the free curling part is a medicine injection outlet, and the catheter is further provided with a hollow cavity penetrating through the medicine injection inlet and the medicine injection outlet; a plurality of injection holes are formed in the side wall of the free curling part close to the medicine injection outlet; wherein the degree of crimp of the free crimp portion is 60-80%.
2. The novel hepatic malignant tumor drug injection catheter of claim 1, wherein the injection hole is circular or elliptical.
3. The novel hepatoma carcinoma drug injection catheter of claim 1, characterized in that said injection holes are three.
4. The novel hepatoma carcinoma drug injection catheter of claim 1, wherein said plurality of injection holes are arranged in a line along the radial direction on the side wall of said free curl portion.
5. The novel hepatic malignancy drug injection catheter according to claim 3, wherein the injection holes are triangularly arranged on the side wall inside the free curl.
6. The novel hepatoma drug injection catheter of any of claims 1 to 5, characterized in that the hollow cavity of said catheter is capable of accommodating a guide wire therethrough.
7. The novel hepato-malignant drug injection catheter of any of claims 1 to 5, wherein said catheter has a cross-sectional diameter of 3 mm.
8. The novel hepatoma drug injection catheter of any of claims 1 to 5, wherein said catheter has a wall thickness of 0.5 mm.
9. The novel hepatic malignant tumor drug injection catheter as claimed in any one of claims 1 to 5, wherein the straight tube portion has a length of 810-910mm, and the free coil portion has a stretched length of 35-50 mm.
10. The novel hepatic malignant tumor drug injection catheter of claim 9, wherein the straight tube portion has a length of 860mm, and the free curled portion has a stretched length of 40 mm.
11. The novel hepato-malignant tumor drug injection catheter of claim 9, wherein said free crimps have a crimp level of 70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022534835.9U CN216061621U (en) | 2020-11-05 | 2020-11-05 | Novel liver malignant tumor medicine injection catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022534835.9U CN216061621U (en) | 2020-11-05 | 2020-11-05 | Novel liver malignant tumor medicine injection catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216061621U true CN216061621U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022534835.9U Active CN216061621U (en) | 2020-11-05 | 2020-11-05 | Novel liver malignant tumor medicine injection catheter |
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| Country | Link |
|---|---|
| CN (1) | CN216061621U (en) |
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2020
- 2020-11-05 CN CN202022534835.9U patent/CN216061621U/en active Active
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