CN2936184Y

CN2936184Y - Low temperature surgical therapeutic device and system composed of it

Info

Publication number: CN2936184Y
Application number: CN 200620098527
Authority: CN
Inventors: 王惠龄; 王晨峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-17
Filing date: 2006-08-17
Publication date: 2007-08-22
Anticipated expiration: 2016-08-17

Abstract

The utility model discloses a new low temperature cure equipment with the neck tube installed airproof. The heat interchanger, the relief valve and the switch valve are all on the neck tuber. The switch valve is positioned in front of the heat interchanger that is connected with the soft transmission tube. The exhaust valves are connected with the soft transmission tube and thermal insulation arbore. The cold tool bit and thermal insulation arbore are connected in a demountable manner. One end of the liquid nitrogen tube is positioned in the Dewar and the other end is connected with the switch valve. The system composed by the above-mentioned low temperature cure equipment includes the worktable, relative low temperature cure equipment and the data processing equipment, wherein the temperature sensor consists of the pinhead and the lower temperature thermometric gage which is encapsulated in the pinhead. The storing Dewar is beneath the worktable. The utility model enhances the characteristic of working as a whole of the lower temperature scalpel, combines with the low temperature detection equipment, and optimizes the process of outpatient service and the clinical fluid infusion. The utility model can be used in the popularization of the low temperature applied clinography and the surgery operation.

Description

A kind of cryosurgery therapy equipment reaches by its system that constitutes

Technical field

The invention belongs to technical field of medical instruments, be specifically related to a kind of cryosurgery therapy equipment and reach by its system that constitutes.

Background technology

Cryosurgery is widely used in treating clinical operations such as tumor, hemorrhoid, department of eye, department of dermatologry, gynecological, beauty treatment, neurosurgery and pain relieving.It has response light, safe characteristics, is specially adapted to old man women child.The effect of hemostasis and minimizing blood loss volume during the operation is arranged.Freezing have anesthesia and the analgesic acts on, and can demutation after the freezing nervous tissue and restore funcitons.The treatment malignant tumor had immunological effect.It is a kind of economical and practical effective Therapeutic Method.

Along with the progress of modern science and the development of cryogenic technique, the cryosurgery surgical apparatus has been obtained continuous progress.But influence too simple and crude or the complicated the two poles of the earth of device construction trend situation is not still broken away from total aspect, has limited popularizing and promoting of low temperature medical skill clinical practice.Name is called: " the immersion freezing type cryoprobe device that can impel freezing tumor tissues to be rapidly heated and to melt " number of patent application: 01201762.0.Though this device has certain therapeutic effect, structure is tending towards simply, the size and the variation of temperature of difficult control cold.The controlled system of tumor treatment that colds and heat succeed each other of the disclosed temperature rate of in December, 2005, publication number: CN1709212A, its adopts pin type treatment tumor that colds and heat succeed each other, and has the advantage that improves the malignant tumor kill rate.The capital equipment of this cryogenic system adopts the city to be sold by supercharging high-pressure Dewar container for liquefied nitrogen container, belongs to more general traditional cryogenic technique, needs that can not the clinical practice of fine adaptation cryosurgery.Therapy apparatus is frozen in the liquid air cooling of announcing in 2004, and publication number is CN2603663, and open day is on February 18th, 2004.This therapy apparatus adopts gas through the mode of the liquid nitrogen pre-cooling refrigeration of damming, and structure comprises pressure cylinder, device for drying and filtering, liquid nitrogen controller, control valve etc.Have the swift characteristics of refrigeration, but complicated as the clinical practice operation.These all have certain representational situation that reflects prior art.

Lacking cryosurgery clinical practice function admirable and don't too complicated, is very distinct issues and task of present stage with the contradiction of the cryosurgery surgical unit that is fit to popularize and promote.

Summary of the invention

Purpose of the present invention is being to provide a kind of cryosurgery therapy equipment, and this therapy equipment can be carried out the soft transmission of liquid nitrogen, and compact conformation has flexible operation and targeting characteristic of accurate; The present invention also provides the system that is made of this therapy equipment, and this system has integrated and incorporate characteristics.

A kind of cryosurgery therapy equipment provided by the invention is characterized in that: this device comprises work Dewar, neck tube, heat exchanger, soft transfer tube, liquid valve, relief valve, air bleeding valve, adiabatic knife bar and cryoprobe head; The neck tube sealing is installed on the eck of work Dewar, and heat exchanger, relief valve and liquid valve all are positioned on the neck tube, and before liquid valve was positioned at the heat exchanger entrance point, the port of export of heat exchanger was connected with the import of soft transfer tube; One end of air bleeding valve links to each other with the outlet of soft transfer tube, and the other end of air bleeding valve links to each other with adiabatic knife bar, removably connects between the other end of cryoprobe head and adiabatic knife bar; One end of liquid nitrogen pipe is positioned at the work Dewar, and the other end links to each other with the entrance point of liquid valve.

System by above-mentioned cryosurgery therapy equipment is constituted is characterized in that: this system comprises workbench, cryosurgery therapy equipment and data processing equipment; The column of workbench is provided with the rotary work table top, and the cryosurgery therapy equipment is arranged on the rotary work table top, and the top of the column of workbench is provided with the knife bar storage rack, is used to place adiabatic knife bar and cryoprobe head; Store the below that Dewar is positioned at workbench, be used for to work Dewar transporting low temperature liquid; Data processing equipment is positioned on the workbench, is used for the temperature detection and the record of cryosurgery therapeutic process tissue and cryoprobe head; Data processing equipment comprises temperature sensor, temperature indicator and/or data processor, and temperature sensor comprises syringe needle and is encapsulated in the interior low temperature thermocouple of syringe needle, is used for temperature signal collection; Temperature indicator links to each other with temperature sensor, is used for temperature and shows, the temperature of data processor collecting temperature pick off, and data are stored and handle is with the temperature that shows therapeutic process and the variation of writing task process temperature.

Present international popular hand-held cryosurgery device, it has advantages of simple operation, but the cryoprobe of its hand-held can only realize horizontal level and slightly inclination contact the treatment position of focus body.Soft transfer tube cryoprobe of the present invention can be straight up or is reached 360 anglecs of rotation downwards, and the focus of different positions is treated.And the effective length of soft transfer tube from low-temperature receiver to the cryoprobe head reach 1000mm, improved the motility of clinical manipulation and the accuracy of effective working space and targeting to the full extent.Though transmit the advantage that liquid nitrogen also has different degree of freedom directions to a kind of in the prior art with metal bellows such as rustless steels, this is to copy general low-temperature industrial technology to use, because its volume is big, and complex structure or the like factor, technical for a long time not breakthrough.The present invention has overcome the technology limitation of these aspects, proposes to adapt to the clinical a kind of new cryosurgery therapy equipment of further popularizing and applying of cryosurgery.The present invention is with the integrated overall work characteristic that improved of cryosurgery cutter, and combine with the cryogenic temperature test section is organic, optimize the program of hospital outpatient and clinical fluid infusion simultaneously, become the universal and popularized type cryosurgery surgical medical apparatus that is fit to the cryosurgery clinical practice.

Cryosurgery therapy equipment of the present invention adopts soft transmission to connect, and cutter head is adjusting position and angle arbitrarily, and it is accurate to have a targeting, flexible characteristic.The monitoring and the recording system of cryosurgery therapeutic process tissue temperature be equipped with and.For simplifying medical worker's operation, system comprises the storage Dewar, has the characteristics of hospital and clinical long-time not fluid infusion simultaneously.As this system only needed one month or more long-time cycle charge liquid nitrogen one time.Adapting to greatest extent and satisfy the cryosurgery clinical practice, is to be fit to popularize and a kind of cryosurgery therapeutic equipments of promoting.

Description of drawings

Fig. 1 is the structural representation of cryosurgery therapy equipment of the present invention;

Fig. 2 is a work Dewar structure sketch map;

Fig. 3 is soft transfer tube sketch map;

Fig. 4 is adiabatic lever structure sketch map;

Fig. 5 is the structural representation of air bleeding valve;

Fig. 6 is the structural representation of liquid valve;

Fig. 7 is the structural representation of the system that is made of cryosurgery therapy equipment of the present invention;

Fig. 8 is the temperature sensor sketch map.

The specific embodiment

The present invention is further detailed explanation below in conjunction with accompanying drawing and example.

As shown in Figure 1, cryosurgery therapy equipment of the present invention comprises work Dewar 1, neck tube 2, heat exchanger 3, soft transfer tube 4, liquid valve 5, relief valve 6, air bleeding valve 7, adiabatic knife bar 8 and cryoprobe head 9.Neck tube 2 sealings are installed on the eck of work Dewar 1, and heat exchanger 3, relief valve 6 and liquid valve 5 are installed on the neck tube, and before liquid valve 5 was positioned at heat exchanger 3 entrance points, the port of export of heat exchanger 3 was connected with the import of soft transfer tube 4.One end of air bleeding valve 7 links to each other with the outlet of soft transfer tube 4, and the other end of air bleeding valve 7 links to each other with adiabatic knife bar 8, removably connects between the other end of cryoprobe head 9 and adiabatic knife bar 8.

As shown in Figure 2, work Dewar 1 is selected the micro metal Dewar for use, is vacuum insulation, and screwed neck tube 2 is installed on its eck, and neck tube is one of agent structure of cryosurgery therapy equipment.The bottom of neck tube is provided with seal receptacle 10, is provided with sealing ring 11, sealing ring 12 and rotation gland 13 on it successively, constitutes the fast sealing structure between work Dewar 1 eck and the neck tube 2.Sealing ring 12 and rotation gland 13 are made of plastics such as metal or politef, and sealing ring 11 is the rubber material.Can adopt one group of sealing ring 11 and sealing ring 12 or organize sealing ring 11 and sealing ring 12 seals more., compress sealing ring 11 and carry out seal process by screw thread on the neck tube 2 by rotation gland 13.Heat exchanger 3, relief valve 6 and liquid valve 5 are installed on the neck tube, heat exchanger 3 is positioned at rotation gland 13 tops, and relief valve 6 can be installed in the neck tube optional position, are used to guarantee that the interior nitrogen pressure of work Dewar is in safety range.Before liquid valve 5 is positioned at heat exchanger 3 entrance points.One end of liquid nitrogen pipe 15 is positioned at work Dewar 1, and the other end links to each other with the entrance point of liquid valve 5.

Leak heat in order to reduce room temperature, can add radiation shield 14 in the bottom of work Dewar 1 eck.

Heat exchanger 3 is made by the good metal material of conduction of heat such as copper etc., and the one end is fixed on by engage thread on the neck tube 2 of work Dewar 1, and the other end is connected with the import of soft transfer tube 4 by connected modes such as screw threads.Heat exchanger 3 adopts finned heat exchanger, is liquid nitrogen in the pipe, by the heat of fin absorption air, makes tube wall produce blanket of nitrogen, thus the transmission of protection liquid nitrogen.

As shown in Figure 3, soft transfer tube 4 is composited by interior pipe 16 and outer tube 17, and interior pipe is that plastic flexible pipes such as politef are made, and outer tube forms for the elastic metallic yarn helically coiling.Soft transfer tube is more than the 1000mm, and two ends connect by modes such as screw threads 18.One end of soft transfer tube 4 links to each other with heat exchanger 3 outlets, and the other end links to each other with the import of adiabatic knife bar 8.

As shown in Figure 4, adiabatic knife bar 8 comprises air bleeding valve 7, outer tube 19, interior pipe 20, vacuum interlayer 21, liquid nitrogen tube for transfusion 22, link 23 and center air deflector 24.Outer tube 19 and interior pipe 20 are coaxial vacuum structure, intermediate formation vacuum interlayer 21.Outer tube 19 and interior pipe 20 can adopt metal tube materials such as rustless steel, make coaxial vacuum structure by welding manner.Center air deflector 24 is carried and return-flow structure for liquid nitrogen, and the centre is the liquid nitrogen passage, is furnished with the gas backstreaming passage all around, is processed by metals such as rustless steels.Center air deflector 24 links to each other with outer tube 19 the other end with interior pipe 20 by link 23, and center air deflector 24 links to each other with cryoprobe head 9 by screw thread, and air bleeding valve 7 links to each other by the outlet of screw thread with soft transfer tube 4.

As shown in Figure 5, air bleeding valve 7 is positioned at the end of adiabatic knife bar 8, is column type.The middle part of the air bleeding valve 7 that air bleeding valve valve core 26 is positioned at, valve pocket 27 is outer to be enclosed within on the air bleeding valve valve core 26, and coaxial core, and can 360 degree rotations.Leave steam vent 25 on the valve pocket 27, knob 28 is positioned at the end of valve pocket 27, and turn knob 28 closes out and regulate the flow size by the variation in aerofluxus aperture of control steam vent 25.

For improving technique effect of the present invention, it is optimum organization that cryoprobe head 9 adopts contact conduction type cutter head or ejection-type cutter head, according to patient demand, replaces during use.Contact conduction type cutter head adopts the fine copper manufacturing, is cavity in the cutter head, according to concrete structure, and intracavity packing metal polyporous material.The ejection-type cutter head adopts the rustless steel manufacturing.

As shown in Figure 6, the structure of liquid valve 5 is: liquid valve spool 30 is positioned at the central authorities of valve seat 31, rotary switch 29 is positioned at the top of liquid valve spool 30, liquid valve spool 30 is a column type, its lower end has inlet, at the side liquid outlet, valve seat 31 lower ends have the liquid outlet that is complementary with liquid valve spool 30 inlets.By rotary switch 29 rotation fluid valve cores 30, when the liquid outlet of liquid valve spool 30 when liquid outlet on the valve seat 31 communicates, liquid enters heat exchanger 3 by liquid valve 5.Spool available metal such as stainless steel material are made also available nonmetallic materials and are made.Spool inlet and liquid outlet can be that horizontal level or vertical position are processed into 90 degree or 180 degree according to the heat exchanger operating position, and liquid valve spool end links to each other with knob with thread connecting mode, the switch that turn rotary switch 29 can by-pass valve control.

When the gas pressure in the work Dewar 1 surpassed the pressure of setting, relief valve 6 was opened, and release portion gas is to keep the service pressure in the work Dewar 1.

This cover cryosurgery therapy equipment can and store Dewar with temperature measuring data logger computer system and combine, by integrated combinative structure, comprehensively be compactness a whole set of cryosurgery therapy equipment system as shown in Figure 7.The column 32 of workbench is provided with rotatable work top 33, work Dewar 1 is arranged on the rotary work table top 33, can oscilaltion left rotation and right rotation mobile working Dewar position by rotary work table top 33, patient is taked optimum treatment position, be the epitaxial structure of soft transmission cryosurgery medical treatment instrument work Dewar.Below work Dewar 1, dispose rotation auxiliary table 34, be used to place various cryoprobe heads and other personal letter additional device.Can conveniently select for use at clinical scene and change.The top of the column 32 of workbench is provided with knife bar storage rack 35.

Store Dewar and be provided with the fast sealing structure identical with the Dewar 1 of working, on the eck of storage Dewar screwed neck tube is installed, the bottom of neck tube is provided with seal receptacle, is provided with sealing ring, sealing ring and rotation gland on it successively, and the top of neck tube is provided with the hand liquid valve.

Data processing equipment 36 is positioned on the table top of workbench.Data processing equipment 36 is used for the temperature detection and the record of cryosurgery therapeutic process tissue and cryoprobe head.Comprise temperature sensor, temperature indicator and/or data processor.Figure 8 shows that a kind of optimal way of temperature sensor, its structure is: be packaged with low temperature thermocouple 38 in syringe needle 41, low temperature thermocouple is thermode materials such as nickel chromium triangle/copper ferrum, copper/constantan.In the clinical use, avoid under the situation of cross infection in consideration, can cooperate disposable overcoat 39 to use, be with overcoat 39 outside syringe needle 41, syringe needle 41 and overcoat 39 are two needle tubings that diameter differs.Fill high thermal conducting material 40 in these overcoat 39 inner chamber terminations, as thermometric conduction carrier.Temperature indicator links to each other with the temperature sensor of pin type, is used for temperature and shows.Data processor is gathered the temperature of pin type temperature sensor, and data are stored and handled, with the temperature of demonstration therapeutic process and the variation of writing task process temperature.

Store the below that Dewar 37 is positioned at data processing equipment 36, the Capacity Ratio work Dewar 1 that stores Dewar 37 is big, and has the fast sealing structure, can by be provided with at the Dewar bottleneck with the hand method to work Dewar transporting low temperature liquid.Many-sided adaptability that the premium properties of the cryosurgery cutter that the present invention had and clinical practice are used is the clinical a kind of new cryosurgery surgery systems of further popularizing and applying of cryosurgery.

Claims

1, a kind of cryosurgery therapy equipment is characterized in that: this device comprises work Dewar (1), neck tube (2), heat exchanger (3), soft transfer tube (4), liquid valve (5), relief valve (6), air bleeding valve (7), adiabatic knife bar (8) and cryoprobe head (9); Neck tube (2) sealing is installed on the eck of work Dewar (1), heat exchanger (3) relief valve (6) and liquid valve (5) all are positioned on the neck tube (2), before liquid valve (5) was positioned at heat exchanger (3) entrance point, the port of export of heat exchanger (3) was connected with the import of soft transfer tube (4); One end of air bleeding valve (7) links to each other with the outlet of soft transfer tube (4), and the other end of air bleeding valve (7) links to each other with adiabatic knife bar (8), removably connects between the other end of cryoprobe head (9) and adiabatic knife bar (8); One end of liquid nitrogen pipe (15) is positioned at work Dewar (1), and the other end links to each other with the entrance point of liquid valve (5).

2, device according to claim 1 is characterized in that: the bottom of neck tube (2) is provided with seal receptacle (10), is provided with sealing ring (11), sealing ring (12) and rotation gland (13) on it successively; Rotation gland (13) is gone up screw thread by neck tube (2) and is compressed sealing ring (11).

3, device according to claim 1 and 2 is characterized in that: adiabatic knife bar (8) comprises air bleeding valve (7), outer tube (19), interior pipe (20), vacuum interlayer (21), liquid nitrogen tube for transfusion (22), link (23) and center air deflector (24); Outer tube (19) and interior pipe (20) are coaxial vacuum structure, middle formation vacuum interlayer (21); One end of outer tube (19) and interior pipe (20) links to each other with air bleeding valve (7), and its other end links to each other with center air deflector (24) by link (23), and center air deflector (24) links to each other with cryoprobe head (9); In the middle of the center air deflector (24) is the liquid nitrogen passage, is the gas backstreaming passage all around.

4, device according to claim 3 is characterized in that: the structure of air bleeding valve (7) is: the middle part of the air bleeding valve (7) that air bleeding valve valve core (26) is positioned at, and valve pocket (27) is movable to be enclosed within on the air bleeding valve valve core (26), and coaxial core; Leave steam vent (25) on the valve pocket (27), knob (28) is positioned at the end of valve pocket 27.

5, device according to claim 4, it is characterized in that: the structure of liquid valve (5) is: liquid valve spool (30) is positioned at the central authorities of valve seat (31), rotary switch (29) is positioned at the top of liquid valve spool (30), liquid valve spool (30) is a column type, its lower end has inlet, at the side liquid outlet, valve seat (31) lower end has the liquid outlet that is complementary with liquid valve spool (30) inlet.

6, device according to claim 5 is characterized in that: the bottom at work Dewar (1) eck is provided with radiation shield (14).

7, a kind of system that is constituted by the described cryosurgery therapy equipment of claim 1, it is characterized in that: this system comprises workbench, cryosurgery therapy equipment and data processing equipment; The column of workbench (32) is provided with rotary work table top (33), the cryosurgery therapy equipment is arranged on the rotary work table top (33), the top of the column of workbench (32) is provided with knife bar storage rack (35), is used to place adiabatic knife bar (8) and cryoprobe head (9); Store the below that Dewar (37) is positioned at workbench, be used for to work Dewar (1) transporting low temperature liquid;

Data processing equipment (36) is positioned on the workbench, is used for the temperature detection and the record of cryosurgery therapeutic process tissue and cryoprobe head; Data processing equipment (36) comprises temperature sensor, temperature indicator and/or data processor, and temperature sensor comprises syringe needle (41) and is encapsulated in the interior low temperature thermocouple (38) of syringe needle (41), is used for temperature signal collection; Temperature indicator links to each other with temperature sensor, is used for temperature and shows, the temperature of data processor collecting temperature pick off, and data are stored and handle is with the temperature that shows therapeutic process and the variation of writing task process temperature.

8, system according to claim 7 is characterized in that: dispose rotation auxiliary table (30) in the below of work Dewar (1).

9, according to claim 7 or 8 described systems, it is characterized in that: at the outer overcoat (39) that is with of syringe needle (41), syringe needle (41) and overcoat (39) are two needle tubings that diameter differs, and fill high thermal conducting material 40 in this overcoat (39) inner chamber termination.

10, according to claim 7 or 8 described systems, it is characterized in that: on the eck of storage Dewar (37) screwed neck tube is installed, the bottom of neck tube is provided with seal receptacle, is provided with sealing ring, sealing ring and rotation gland on it successively, and the top of neck tube is provided with the hand liquid valve.