CN101869507A

CN101869507A - Cryosurgical scalpel for in vivo minimally invasive operation

Info

Publication number: CN101869507A
Application number: CN 201010204079
Authority: CN
Inventors: 童明伟; 胡鹏; 童师颖
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2010-06-21
Filing date: 2010-06-21
Publication date: 2010-10-27

Abstract

The invention relates to a cryosurgical scalpel for an in vivo minimally invasive operation, belonging to the field of a medical appliance. The cryosurgical scalpel comprises a scalpel head, an insulation coupling pipe, a liquid feed pipe, an air return pipe, a handle, a vacuum valve port, a liquid nitrogen charging port, an air return pipe discharging port, a vacuum piston and a temperature sensor. When liquid nitrogen flows towards the scalpel head through the liquid feed pipe in the insulation coupling pipe extending in vivo from the liquid nitrogen charging port, the liquid nitrogen evaporates to enable the scalpel head to form a low temperature of -196 DEG C, so that the liquid nitrogen is cut off after freezing in vivo pathological tissues into ice balls, hot water of 45 DEG C is transmitted from the liquid nitrogen charging port to the scalpel head, the scalpel head starts to be heated up to quickly rewarm the ice balls to break cell walls, and warm water is discharged from the discharging port through the air return pipe. Under the alternate effects of cooling and heating, the pathological tissues thoroughly necrose.

Description

Cryosurgical scalpel in vivo minimally invasive operation

Technical field:

The present invention relates to Cryosurgical scalpel in vivo minimally invasive operation, belong to medical instruments field.It comprises cutter head, adiabatic junction pipe, feed pipe, muffler, handle, vacuum valve port, topping up nitrogen mouth, muffler air vent, vacuum cock and temperature sensor.When liquid nitrogen from topping up nitrogen mouth when stretching into feed pipe the intravital adiabatic junction pipe and flow to the cutter head evaporation, make cutter head form-196 ℃ low temperature, after intravital pathological tissues become ice hockey, close liquid nitrogen and change into 45 ℃ hot water and sending into through cutter head from topping up nitrogen mouth, cutter head promptly begins to heat up, make the rapid rewarming of ice hockey by cell wall rupture, warm water is then discharged from the muffler air vent.Under cold and hot alternating action, pathological tissues will be thoroughly downright bad.

Background technology:

In October, 1998, U.S. Endocare company succeeded in developing a kind of novel ultralow temperature intervention cold and hot ablation therapeutic equipment: Crycare minimally invasive surgery system-argon helium knife (www.cryocare.com.cn), and pass through drugs approved by FDA, after IEC, EMC and the CE of the European Union authentication, enter that the medical market is very fast just installs and uses in hospital from all parts of the world.Its invention is the last word of freezing thermal therapeutical technical development, not only inheritance and development ultra low temperature therapeutical basis and the clinical research achievement learned, and released refrigerating new ideas and new technique.Though this minimally invasive surgery system-argon helium knife furuncle is imitated the cost of equipment costliness thereby is caused curing furuncle expense height.

Summary of the invention:

In order to remedy above-mentioned the deficiencies in the prior art, the present invention will provide that a kind of liquid nitrogen of available cheapness is made low-temperature receiver, thermostatted water is made thermal source, can reach the Cryosurgical scalpel in vivo minimally invasive operation that fabulous curative effect can reduce medical expense again greatly.For reaching this purpose, it should comprise cutter head, adiabatic junction pipe, feed pipe, muffler, handle, vacuum valve port, topping up nitrogen mouth, muffler air vent, vacuum cock and temperature sensor.When liquid nitrogen from topping up nitrogen mouth when stretching into feed pipe the intravital adiabatic junction pipe and flow to the cutter head evaporation, make cutter head form-196 ℃ low temperature, after intravital pathological tissues become ice hockey, close liquid nitrogen and change into 45 ℃ hot water and sending into through cutter head from topping up nitrogen mouth, cutter head promptly begins to heat up, and makes the rapid rewarming of ice hockey by cell wall rupture, under cold and hot alternating action; pathological tissues will be thoroughly downright bad, and the temperature of cutter head is by temperature sensor measurement.

Description of drawings:

Fig. 1. Cryosurgical scalpel in vivo minimally invasive operation structure chart, Fig. 2. junction pipe vacuum valve port sketch map.

Wherein: the 1--cutter head; The adiabatic junction pipe of 2--; The 3--feed pipe; The 4--muffler; 5--handle, 6--vacuum valve port; 7--topping up nitrogen mouth; 8--muffler air vent; The 9--vacuum cock; The 10--temperature sensor.

The top of adiabatic junction pipe 2 is affixed and seal with the bottom surface of handle 5, the bottom of adiabatic junction pipe 2 is sealed by cutter head 1, cutter head 1 is the reverse taper of hollow, one end of feed pipe 3, temperature sensor 10 and muffler 4 and cutter head 1 bottom UNICOM and fixed being sealed on the bottom end face, the top of feed pipe 3, temperature sensor 10 and muffler 4 is passed adiabatic junction pipe 2 and handle 5 and is stretched out top and the fixed outside, top that is sealed in handle 5 of handle 5, and wherein feed pipe 3 links fixed with topping up nitrogen mouth 7; Muffler 4 links fixed with muffler exhaust outlet 8; The fixed sealing in top of temperature sensor 10 and handle 5.

Case study on implementation:

Fig. 1 also is a TVL-5 type Cryosurgical scalpel in vivo minimally invasive operation structure chart.Operation is preceding with topping up nitrogen mouth 7, muffler air vent 8 respectively with liquid nitrogen supply pipe and exhaustor UNICOM, liquid nitrogen flows to heat absorption evaporation in the cutter head 1 along the feed pipe 3 in the adiabatic junction pipe 2, make the surface temperature of cutter head 1 temperature drop to-196 degree, this temperature is measured by temperature sensor 10, after confirming that body tissue is frozen into ice hockey, can send 45 ℃ hot water to from topping up nitrogen mouth 7, flow of hot water is through feed pipe 3 and after flowing to cutter head 1,8 outflows along muffler 4 from the muffler air vent again, the ice hockey that is frozen into of body tissue thaws rapidly like this, causes the histiocyte wall to break and has quickened the death of pathological tissues.For not injuring normal structure, extract air in the adiabatic junction pipe 2 with syringe out from vacuum valve port 6 after, under the effect of vacuum cock 9, can keep the vacuum in handle 5 and the adiabatic junction pipe 2 for a long time.

Claims

1. Cryosurgical scalpel in vivo minimally invasive operation, it comprises cutter head (1), adiabatic junction pipe (2), feed pipe (3), muffler (4), handle (5), vacuum valve port (6), topping up nitrogen mouth (7), muffler air vent (8), vacuum cock (9) and temperature sensor (10), it is characterized in that the top of adiabatic junction pipe (2) and the fixed and sealing of bottom surface UNICOM of handle (5), the bottom of adiabatic junction pipe (2) is sealed by cutter head (1), cutter head (1) is the reverse taper of hollow, feed pipe (3), one end of temperature sensor (10) and muffler (4) and cutter head (1) bottom UNICOM and fixed being sealed on the bottom end face, feed pipe (3), the top of temperature sensor (10) and muffler (4) is passed adiabatic junction pipe (2) and handle (5) and is stretched out the top and the fixed outside, top that is sealed in handle (5) of handle (5), and wherein feed pipe (3) links fixed with topping up nitrogen mouth (7); Muffler (4) links fixed with muffler air vent (8); The fixed sealing in top of temperature sensor (10) and handle (5).

2. the vacuum valve port (6) of Cryosurgical scalpel in vivo minimally invasive operation as claimed in claim 1, the bottom end seal that it is characterized in that vacuum valve port (6) is cemented in the top of handle (5) and UNICOM with it, a slidably vacuum cock (9) is arranged in the vacuum valve port (6), and the other end of vacuum valve port (6) is a blow vent that can connect with air extractor.