CN2139424Y

CN2139424Y - Cryoprobe for treating tumour

Info

Publication number: CN2139424Y
Application number: CN 92231553
Authority: CN
Inventors: 冯威健; 碇狙; 黄赐汀
Original assignee: NO 4 HOSPITAL OF HEBEI MEDICAL
Current assignee: NO 4 HOSPITAL OF HEBEI MEDICAL
Priority date: 1992-08-29
Filing date: 1992-08-29
Publication date: 1993-08-04
Anticipated expiration: 2002-08-29

Abstract

The utility model relates to a medical appliance which utilizes the liquid nitrogen to carry out the cold therapy for the tumour. An access passage and an escape passage for the liquid nitrogen are arranged in a sealed needle tube, the access passage is communicated with the escape passage on the position of the tip of a needle, and the access passage and the escape passage extend out of the needle tube from the tail of the needle; besides, a heat insulating layer is arranged between the needle tube and the passages for the liquid nitrogen. The non-surgical utility model used for curing the tumour has the characteristics that the wound is small, the pain of a patient is reduced, and the safety is improved; the immunological reaction can be generated by the frozen necrotic tissue, and the therapeutic effect is obviously enhanced.

Description

Cryoprobe for treating tumour

This utility model relates to a kind of medical apparatus and instruments, specifically a kind of cold therapy pin of not introducing medium.

The existing equipment that utilizes liquid nitrogen to carry out the tumor cold therapy is only limited to the tumor that treatment is positioned at body surface, for intravital tumor, then is to adopt surgical operation, and in-vivo tumour is exposed, and carries out cold therapy then.This treatment is big to the misery that patient causes, and operating time is long, and has the probability that causes danger because of complication.Still there is not at present the equipment that adopts non-operation that tumor or other indications of deep tissue organ are treated.

The purpose of this utility model just provides a kind ofly carries out the apparatus of non-operative treatment to human body deep tissue organ lesion, to reduce complication and patient suffering, improves safety.

This utility model is achieved in that admission passage and the discharge channel that liquid nitrogen is arranged in the needle tubing of a sealing, two passages are linked up at the needle point position, stretch out outside the needle tubing at the backshank end, between needle tubing and the liquid nitrogen passage heat insulation layer are arranged.The afterbody of liquid nitrogen admission passage connects liquid nitrogen container, and the afterbody opening of discharge channel leads to atmosphere.Form freezing chamber like this at the needle point position, and needle tubing Duan Ze is because the effect of heat insulation layer, the temperature remains within the normal range substantially.For the tumor that occurs in the deep tissue organ, after determining diseased region, guide with B ultrasonic, through skin cold therapy is needled into human body, needle tip inserts tumor, opens liquid nitrogen container, liquid nitrogen enters the needle point position through admission passage, enters atmosphere along discharge channel then.This moment, needle tip megadyne temperature degree reduced, and freezing tumor tissues after finishing gets final product the pin extraction.

Use this mechanotherapy in-vivo tumour can not damage pin the tissue and the cell at normal position of process, utilize non-operation means to implement the in-vivo tumour treatment, and freezing postnecrotic tumor tissues also can produce immunoreation, is absorbed voluntarily by human body, thereby has strengthened therapeutic effect.Particularly tradition is thought the malignant tumor of incurable disease, utilize this mechanotherapy can obtain the obvious treatment effect.

Below in conjunction with description of drawings embodiment.

Fig. 1, Fig. 2 are the structural representations of two kinds of embodiment of the present utility model.

Embodiment 1: as shown in Figure 1, needle tubing 1 is the body of closed at both ends, and liquid nitrogen admission passage 2 and discharge channel 3 are two belled pipes, and admission passage 2 is an inner tube, and opening leads to the needle point position.Discharge channel 3 is an outer tube, and its both ends all are connected with needle tubing 1 sidewall, makes to constitute a sealant 4 between the sidewall of needle tubing 1 and the outer tube 3, can load heat-barrier material in the sealing layer or is evacuated, thereby form heat insulation layer.Outside backshank, outer tube 3 communicates with atmosphere, and inner tube 2 can connect liquid nitrogen container.

Embodiment 2: the admission passage 2 of liquid nitrogen and discharge channel 3 are connected with 5, two collateral vessels of partition and penetrate partition 5 for entering two collateral vessels in the needle tubing 1 in the front portion of needle tubing, admission passage pipe 2 openings are at the needle point position, and discharge channel pipe 3 openings are on partition 5.Needle tubing 1 tail end sealing-in, two collateral vessels stretch out outside the needle tubing.Between the sealing tail end of partition 5 and needle tubing, be a confined space, can load heat-barrier material in this space in advance, perhaps directly be evacuated, thereby form heat insulation layer 4.

Claims

1, a kind of tumor cold therapy instrument is characterized in that having in the needle tubing 1 of a sealing admission passage 2 of liquid nitrogen and discharge channel 3, two passages to link up at the needle point position, stretches out outside the needle tubing at the backshank end, between needle tubing and the liquid nitrogen passage heat insulation layer 4 is arranged.

2, cold therapy pin according to claim 1, the admission passage 2 and the discharge channel 3 that it is characterized in that liquid nitrogen are two belled pipes, and admission passage 2 is an inner tube, and opening leads to the needle point position, discharge channel 3 is an outer tube, and its both ends all are connected with the needle tubing sidewall.

3, cold therapy pin according to claim 1, the admission passage 2 and the discharge channel 3 that it is characterized in that liquid nitrogen are two collateral vessels that enter in the needle tubing 1, be connected with partition 5 in the front portion of needle tubing 1, two collateral vessels all penetrate partition 5, admission passage pipe 2 openings are at the needle point position, the sealing-in of needle tubing tail end, two collateral vessels stretch out outside the needle tubing.