CN2167727Y

CN2167727Y - Melting-injection catheter

Info

Publication number: CN2167727Y
Application number: CN 93224829
Authority: CN
Inventors: 王德
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-22
Filing date: 1993-09-22
Publication date: 1994-06-08
Anticipated expiration: 2003-09-22

Abstract

The utility model relates to an ablation-injection catheter, which is a medical appliance for the local injection and ablation therapy of tumor and arrhythmia. A hollow injection conduit is inserted in the centre of a monopole or multipole catheter, the lower end of the injection conduit is connected with a hollow needle electrode, and the upper end is connected with an injector. The injection conduit is pushed and pulled, which can cause the needle electrode extended from the catheter or retracted in the catheter, and in addition, the edge of a stator on the lower part of the catheter is fixedly connected with one pull wire which is educed onto the central sleeve shaft of a bending device at the outlet of the catheter. With the central sleeve shaft moved, and the lower part of the catheter can be made into curved shape. The utility model achieves good therapeutic effect on drug injection carried out to the circumference of focus of infection and a deep layer or the ablation therapy of microwave and emission frequency.

Description

Melting-injection catheter

This utility model relates to a kind of medical apparatus and instruments that is used for tumor and ARR local injection and ablation, also can be used for the local injection of tract diseases such as gastric ulcer and the medical apparatus and instruments of hemostatic treatment, a kind of medical apparatus and instruments of Therapeutic Method of atraumatic especially is provided.

At present, tumor treatment mainly contains three kinds of methods: one, surgical operation therapy, two, radiation cure (radiotherapy), three, chemotherapy (chemotherapy).Surgical operation therapy is a kind of traumatic Therapeutic Method that has, and need open thoracic cavity or abdominal cavity tumor resection as esophageal carcinoma, gastric cancer.But radiation and chemotherapy also can kill and wound normal cell except that killing tumor cell.These three kinds of methods all have inevitable side effect.

ARR treatment also has three kinds: one, surgical operation, two, systemic drug, three, the conduit interventional therapy.Surgical operation therapy is that traumatic treatment is arranged; Systemic drug treatment is low except that the focus local drug concentration, the weak effect, medicine also can influence Normocellular activity; Present catheter ablation treatment is because the defective on the catheter design can not be carried out effective ablation to deep layer focus in the cardiac muscle.

The purpose of this utility model provides a kind of easy, the medical apparatus and instruments of the Therapeutic Method of atraumatic, and it can be accomplished rare or not have the methods for the treatment of diseases of toxic and side effects.Can carry out medicine injection or microwave to the focus deep layer, the ablation of frequently penetrating plays better curative effect.

The purpose of this utility model is achieved in that the center at one pole or multipole conduit, insert the injection pipeline of a hollow, the lower end of injection pipeline connects the pin type electrode and the lead thereof of hollow, and the upper end connects syringe, the upper end of pin type electrode be linked in sequence wiper, spring and stator.Usually pin type electrode places in the conduit, but but the moving injection pipeline of push-and-pull and it is stretched out when needing by the effect of spring, exit in the handing-over of injection pipeline and conduit indicates scale, and the conduit upper end also is provided with locking switch, the length that adjustable markingoff pin type electrode stretches out in the conduit.

Moreover guide on the stretch bending device center sleeve at conduit outlet place in the affixed backguy in stator edge of the bottom of conduit, the Mobility Center sleeve, can make the conduit bottom become bending, locking switch also is equipped with in the vicinity that conduit is connected with the stretch bending device, its degree of crook of scalable.Be convenient to regulate use according to the lesions position of inside of human body.

Use of the present utility model is to insert by body cavities to melt---injection catheter is to arrive the focus part.The operation of conduit and location are to carry out under the supervision of endoscope such as gastroscope, intestinal mirror, metroscope, or are undertaken by intracardiac, surface electrocardiogram mapping.After conduit arrives the focus local positioning, open the locking switch (22) of conduit upper end, the pin type electrode in the conduit promptly ejects in the conduit and thrusts lesion tissue, and the degree of depth of thrusting can be according to the character decision of focus.As the character of tumor, can determine by prior every auxiliary examination such as methods such as x-ray fluoroscopy, radiography, CT, nuclear magnetic resonance scanning or endoscopic biopsy.After the catheter positioning, can carry out topical remedy's injection for curing or chemical focus ablation or pass through respective wire transmission microwave in the conduit by conduit, frequently penetrate physical energies such as (radiofrequencyenergy), to destroy local lesion's cell to conduit lower end respective electrode and electrode.Zoopery shows once melts exoergic, can finish in one minute.Melt what of number of times, can decide according to the character of focus.During tumour ablation treating, elder generation to carry out to central part, to reach thorough radical cure from the periphery of tumor.

Owing to adopt such scheme, can exempt part patient's surgical operation therapy, and not have radiotherapy, chemotherapy and general toxic and side effects, reach better curative effect.

Below in conjunction with drawings and Examples this utility model is further specified:

Fig. 1 is a principle cutaway view of the present utility model.

Fig. 2 melts---the cutaway view of syringe bottom.

Fig. 3 is the sectional view of conduit A-A.

Among the figure: 1, columnar electrode, 2, pin type electrode, 3, the injection duct, 4, electrode, 5, fixed sleeving, 6, wiper, 7, the sleeve pipe chute, 8, spring, 9, stator, 10, electrode cable, 11, the stretch bending line, 12, injection pipeline, 13, syringe duct, 14, conduit, 15, the columnar electrode lead, 16, pin type electrode cable, 17, locking switch, 18, the center sleeve, 19, the stretch bending device, 20, scale, 21, syringe, 22, locking switch.

In Fig. 1,2, the conduit bottom is provided with columnar electrode (1) and electrode (4), the injection pipeline (12) of a hollow is inserted at the center of conduit, and the lower end of injection pipeline (12) connects the pin type electrode (2) and the lead (16) thereof of hollow, and the upper end connects syringe (21).The upper end of pin type electrode (2) be linked in sequence wiper (6) spring (8) and stator (9), wiper (6) but clamping pin type electrode (2) move up and down along sleeve pipe chute (7), and sleeve pipe (5) is fixedly to be assembled together with stator (9) and conduit (14), spring (8) is to be enclosed within outside the syringe (12), there is individual circular hole at stator (9) center, can allow injection pipeline (12) move up and down, the upper end of injection pipeline (12) connects syringe (21), push-and-pull injection pipeline (12) and by the effect of spring (8), can stretch out pin type electrode (2) outside the conduit (14), its length can be regulated from the scale (20) of injection pipeline (12) upper end, and fixes with locking switch (22).

Moreover guide at stator (9) the edge B affixed stretch bending line of point (11) of the bottom of conduit on the center sleeve (18) of stretch bending device (19) at conduit outlet place, Mobility Center sleeve (18) can make the conduit bottom become bending, and its degree of crook can be regulated by locking switch (17).

Fig. 3 is the section figure of conduit bottom A-A, wherein activity template (6) but clamping pin type electrode (2) move up and down along sleeve pipe chute (7).

The length of of the present utility model melting---injection catheter is 90cm, and diameter is 3mm, and the length of pin type electrode is 3cm, and diameter is 2mm, and the center injection pipe diameter is 2mm.

Claims

1, a kind of melting-injection catheter, it is characterized in that: at the center of one pole or multipole conduit, insert the injection pipeline of a hollow, the lower end of injection pipeline connects the pin type electrode and the lead thereof of hollow, the upper end connects syringe, and the push-and-pull injection pipeline can make pin type electrode stretch out in the outer or indentation conduit of conduit.

2, a kind of melting according to claim 1---injection catheter, the upper end that it is characterized in that described pin type electrode (2) be linked in sequence wiper (6), spring (8) and stator (9).Wiper (6) but clamping pin type electrode (2) under the effect of the push pull maneuver of injection pipeline (12) and spring (8) power, move up and down.

3, a kind of melting according to claim 1 and 2---injection catheter is characterized in that also being equipped with locking switch on the top of conduit, in order to the flexible length of pin type electrode of regulating the injection catheter lower end.

4, a kind of melting according to claim 1 and 2---injection catheter, the exit, upper end that it is characterized in that conduit (14) also is connected to the stretch bending device (19) that is provided with locking switch (17), and 1 affixed stretch bending line of B (17) is guided on the center C point of center sleeve (18) of stretch bending device (19) from conduit bottom stator (9) edge, Mobility Center sleeve (18) is in order to regulate the bending of conduit bottom.