CN104042323B

CN104042323B - Laparoscopic surgery low temperature cryoprobe

Info

Publication number: CN104042323B
Application number: CN201410300490.7A
Authority: CN
Inventors: 梁锋; 董凌云; 梁键
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-19
Filing date: 2014-06-19
Publication date: 2016-05-04
Anticipated expiration: 2034-06-19
Also published as: CN104042323A

Abstract

The present invention relates to technical field of medical instruments, the operation low temperature cryoprobe using while specifically carrying out laparoscopic surgery in abdominal cavity. The common drawback that the electrosurgical equipment using now exists is that the electric energy transformation heat energy effect meeting of high-frequency discharge causes surgical wound to organize fire damage, is unfavorable for that the healing of surgical wound and later gestation breed. The invention provides the low temperature cryoprobe that a kind of laparoscopic surgery uses, by knife bar flexible guidance system, the resilience system that automatically resets, control and stepping system, prevent that radial rotating system, watery blood clearing and retrieving system, blade low-temperature cooling system from forming. By adjusting Telescopic knife bar 18, knife blade 10, respectively in handling, work and three kinds of states of protective position, is hidden while allowing blade enter abdominal cavity, prevents to accidentally injure.

Description

Laparoscopic surgery low temperature cryoprobe

One, affiliated technical field

The present invention relates to technical field of medical instruments, while specifically carrying out laparoscopic surgery in abdominal cavityThe operation cryoprobe of interior use.

Two, background technology

It is little that laparoscopic technique has wound because of it, painful light, recovers fast advantage, nearly 20Nian Lai, has obtained swift and violent development. The particularly extensive use of electrosurgical equipment and operation skillImprove constantly, belong in the past some contraindications of laparoscopic surgery, as obesity, excessively thin,Advanced age, repeatedly abdominopelvic cavity history of operation is no longer restricted. Carcinoma of endometrium (EC), uterine neckCancer (SCC), oophoroma (OC), abdominopelvic cavity severe adhesion, pelvic abscess, haemorrhagic shock etc.Disease progressively adopts laparoscopic surgical procedure, and obtains good effect. For suffering from uterine glandMyomata impact is given birth to and is required the patient who gives birth to, while carrying out laparoscopic surgery rejecting adenomyoma,Normal one pole electricity hook, bipolar, the Ligasure etc. of using remove focus, its advantage be can seal micro-Blood vessel wound, reduces hemorrhage. But electrosurgical equipment has common drawback, due toHigh-frequency discharge effect, the heat energy of current transitions acts on operation tissue, can cause surgical wound groupKnit fire damage, be unfavorable for that the healing of wound and later gestation breed. University Of Chongqing's application number201010204079.1, patent of invention " the Ti Nei Wicresoft of application number publication number CN101869507ACryoprobe ", adopt and alternately pass into the freezing method melting with hot water of nitrogen, allow in-vivo tissueUnder the effect colding and heat succeed each other of-196-45 degree, make pathological tissues necrosis, surgical wound tissueAlso can damage, be unfavorable for equally the healing of wound and later pregnant if be applied to laparoscopic surgeryBe pregnent and breed. Nanjing Qin Huai hospital application number 201310508525.1, application number publication numberThe patent of invention " a kind of sleeve pipe scalpel " of CN103519868A, just blade is stretched in sleeve pipeContract, can only solve the prolongation problem of scalpel, no matter in the situation of blade in stretching out or retract,Knife blade is exposed to outside sleeve pipe all the time, if be applied to laparoscope videoendoscopic surgery, easily causes mistakeWound.

Three, summary of the invention

For above problem, the invention provides one in the time of laparoscopic surgery, the adjustment of can stretchingKnife blade position, makes knife blade three kinds of position shapes in handling, work and protection respectivelyState. While entering laparoscope, knife blade is hidden in cutter hub pipe, releases cutter head when use, inSurgical state. And pass into trace nitrogen gas scalpel is carried out cooling, thereby form security abdominal cavityVideoendoscopic surgery low temperature cryoprobe. Low temperature cryoprobe can seal capilary wound, reduce hemorrhage, operation woundMouth is organized fresh, is conducive to postoperative Wound healing and later gestation breeds.

To achieve these goals, the present invention is by nitrogen interface, regulating handle, blade handling positionSkewed slot, knife bar resilience button, location ratchet, ratchet bearing pin, curved spring, guiding anti-rotary seat,Import tapered sleeve, knife blade, shaft block ring, fixed guide seat, drainage tube joint, blade workMake position skewed slot, spring wedge, blade guard bit skewed slot, channel of nitrogen hole, Telescopic knife bar, pressureContracting spring, drainage tube, cutter hub pipe, blade handling boss composition. Cutter hub sleeve pipe by cutter hub pipe withImport tapered sleeve two parts composition; The front end of Telescopic knife bar has blade handling boss, is successively thereafterThe rectangular configuration section of Telescopic knife bar, cylindrical structure section, cylinder are cut flat structural sections, and rear end is(nitrogen interface); In cylindrical structure section, have blade guard bit skewed slot, blade work position skewed slot,Blade handling position skewed slot; Telescopic knife bar is hollow-core construction, forms channel of nitrogen hole. Fixed guideLocation ratchet, ratchet bearing pin, curved spring are installed on seat. Before the general assembly of laparoscopic surgery cryoprobe,First guiding anti-rotary seat is fixed on to the middle part of cutter hub pipe; Spring wedge is fixed on and stretches with shaft block ringOn contracting knife bar; Location ratchet, curved spring are fixed on fixed guide seat with ratchet bearing pin, negativeLiquid sucking-discharging pipe is also fixed on fixed guide seat, forms parts. When general assembly, by Compress Spring coverAt Telescopic knife bar front end, Telescopic knife bar front end enters from the rectangular opening at guiding anti-rotary seat center,The rectangular configuration section of Telescopic knife bar coordinates with the rectangular opening at guiding anti-rotary seat center, completes axially and leadsTo with two kinds of functions that prevent radial rotating. Again fixed guide holder assembly is inserted in after Telescopic knife barEnd, the endoporus of fixed guide seat coordinates with the cylindrical structure section of Telescopic knife bar, fixed guide seatFix with cutter hub pipe, complete the assembling of Telescopic knife bar and realize the axially directed function of Telescopic knife bar.The cylinder of Telescopic knife bar is cut flat structural sections and is coordinated with regulating handle slotted hole, prevent regulating handle withBetween Telescopic knife bar, produce radial rotating, moving axially of regulating handle limits with shaft block ring.

The present invention and background technology comparison, the present invention can overcome common that electrosurgical equipment existsDrawback, prevents the fire damage of surgical wound tissue; Can overcome nitrogen freezing with hot water melt hand overFor method, make the damage of surgical wound necrosis; Be conducive to wound postoperation recovery and afterGestation breed. And, when knife blade cutter of the present invention is retracted, in importing tapered sleeve, applyImport mini-incision in laparoscope videoendoscopic surgery, can avoid causing unnecessary accidental injury.

Four, brief description of the drawings

Below in conjunction with Figure of description, the present invention is done to further more detailed explanation

Fig. 1: the full sectional view of knife blade duty of the present invention

As shown in Figure 1, the present invention by nitrogen interface 1, regulating handle 2, blade handling position tiltedlyGroove 3, knife bar resilience button 4, location ratchet 5, ratchet bearing pin 6, curved spring 7, guidingAnti-rotary seat 8, import tapered sleeve 9, knife blade 10, shaft block ring 11, fixed guide seat 12,Drainage tube joint 13, blade work position skewed slot 14, spring wedge 15, blade guard bit skewed slot16, channel of nitrogen hole 17, Telescopic knife bar 18, Compress Spring 19, drainage tube 20, cutter hub pipe21, blade handling boss 22 forms. By cutter hub pipe 21, guiding anti-rotary seat 8, fixed guide seat12, Telescopic knife bar 18 forms the flexible guidance system of knife bar; Guiding anti-rotary seat 8, Compress Spring 19,Telescopic knife bar 18, spring wedge 15 form the resilience system that automatically resets; Knife bar resilience button 4,Location ratchet 5, ratchet bearing pin 6, curved spring 7, blade handling position skewed slot 3, blade workPosition skewed slot 14, blade guard bit skewed slot 16 composition controls and stepping navigation system; Guiding anti-rotationSeat 8, Telescopic knife bar 18 compositions prevent radial rotating system; Drainage tube joint 13, fixed guideSeat 12, drainage tube 20 form watery blood clearing and retrieving system; Nitrogen interface 1, channel of nitrogen hole17, knife blade 10 forms knife blade low-temperature cooling system. Cutter hub sleeve pipe rear end is cutter hub pipe21, its front end is to import tapered sleeve 9; Drainage tube joint 13 is forever connected to cutter hub pipe 21 rear ends;The front end of Telescopic knife bar 18 has blade handling boss 22, is thereafter the square of Telescopic knife bar 18 successivelyShape structural sections, cylindrical structure section, cylinder are cut flat structural sections, and rear end is nitrogen interface 1;In cylindrical structure section, there are blade guard bit skewed slot 16, blade work position skewed slot 14, blade handlingPosition skewed slot 3; Telescopic knife bar 18 is hollow-core construction, forms channel of nitrogen hole 17. Fixed guide seatLocation ratchet 5, ratchet bearing pin 6, curved spring 7 are installed on 12. Laparoscopic surgery low temperature cryoprobeBefore general assembly, first guiding anti-rotary seat 8 is fixed on to the middle part of cutter hub pipe 21; Spring wedge 15 useShaft block ring 11 is fixed on Telescopic knife bar 18; Location ratchet 5, curved spring 7 use ratchetsBearing pin 6 is fixed on fixed guide seat 12, and drainage tube 20 is fixed on fixed guide seat 12,Form parts. When general assembly, Compress Spring 19 is enclosed within to the front end of Telescopic knife bar 18, in leadingBetween anti-rotary seat 8 and spring wedge 15; By Telescopic knife bar 18 front ends from guiding anti-rotary seat 8In the rectangular opening at center, enter the rectangular configuration section of Telescopic knife bar 18 and guiding anti-rotary seat 8 centersRectangular opening coordinate, complete axially directed with prevent two kinds of functions of radial rotating. Again by knife barResilience button 4 packs in the installing hole of cutter hub pipe 21; Fixed guide seat 12 assemblies are inserted in flexibleThe cylinder of knife bar 18 rear ends, the cylinder of the endoporus of fixed guide seat 12 and Telescopic knife bar 18Structural sections coordinates, and fixed guide seat 12 is fixing with cutter hub pipe 21, ensure fixed guide seat 12On the access opening of drainage tube 20 and the endoporus of drainage tube joint 13 align; Knife bar resilience buttonIt is long-armed upper that 4 lower planes are pressed in location ratchet 5, under the effect of curved spring 7, and location ratchet 5Can insert respectively blade guard bit skewed slot 16, blade work position skewed slot 14, blade handling position tiltedlyGroove 3, thus realize three different location, position; By guiding anti-rotary seat 8 rectangle endoporus withThe supporting of 2 formation Telescopic knife bars 18 of cylinder endoporus of fixed guide seat 12 and axially directed.The cylinder of Telescopic knife bar 18 is cut flat structural sections and is coordinated with the slotted hole of regulating handle 2, prevents from regulatingBetween handle 2 and Telescopic knife bar 18, produce radial rotating, axle is used in moving axially of regulating handle 2Limit with back-up ring 11; What on the mounting plane of knife blade 10, have channel of nitrogen hole 17 dissects halfHole, the cooling knife blade of ejection nitrogen.

Five, detailed description of the invention

The present invention is in the time of safeguard protection state, and location ratchet 5 is acted on by curved spring 7, ratchetInsert in blade guard bit skewed slot 16 at position, and knife blade 10 retracts to and imports in tapered sleeve 9,Eject on the top of knife bar resilience button 4; When entering abdominal cavity and need to performing the operation, shift Telescopic knife bar 18 ontoReach, the relative slippage in inclined-plane of location ratchet 5 and blade guard bit skewed slot 16, locates ratchet 5Rotation, ratchet position is exited from blade guard bit skewed slot 16, continues reach ratchet position and entersBlade work position skewed slot 14, blocking operation knife bar 18 can not retreat, by fixing knife blade 10On operating position; If need to change knife blade 10, continue to promote before operation knife bar 18Move, the relative slippage in inclined-plane of location ratchet 5 and blade work position skewed slot 14, locates ratchet 5Rotation, ratchet position is exited from blade work position skewed slot 14, continues reach ratchet position and entersBlade handling position skewed slot 3, blocking operation knife bar 18 can not retreat, and blade handling boss 22 is stretchedGo out to import the front end face of tapered sleeve 9, can load and unload easily knife blade 10. Complete scalpelAfter the replacing of sheet 10, pin the top of knife bar resilience button 4, make to locate ratchet 5 and rotate,Ratchet position is exited from the skewed slot 3 of blade handling position, and Telescopic knife bar 18 is at Compress Spring 19The lower automatic backing of effect, until spring wedge 15 withstands the front end face of fixed guide seat 12, pineOperate on bar resilience button 4, location ratchet 5 rotates, and blade guard bit skewed slot is inserted at ratchet positionIn 16, knife blade 10 retracts to and imports in tapered sleeve 9, makes laparoscopic surgery cryoprobe in peaceFull preservation state; If in this state laparoscopic surgery low temperature cryoprobe is sent into abdominal cavity, leadsEnter tapered sleeve 9 and play guiding function, and safe and reliable, can not cause accidental injury. When laparoscope handArt low temperature cryoprobe arrives surgery location, promotes Telescopic knife bar 18, and knife blade 10 is locked inOperating position; And in Telescopic knife bar 18 rectangular configuration sections and guiding anti-rotary seat 8 central rectangular apertureCooperation under, knife blade 10 can radial rotating, can carry out easily laparoscopic surgery.In order to prevent the condensation effect of the overheated rust of knife blade 10 and guarantee operation section blood vessel, stretchingThe nitrogen interface 1 of contracting knife bar 18 connects nitrogen, by passing into trace nitrogen in channel of nitrogen hole 17Gas, carries out cooling to knife blade 10. In the time there is watery blood in laparoscope, by knife blade10 fall back on safe condition, allow importing tapered sleeve 9 prosopyles invade in watery blood, at drainage tube joint 13Access negative pressure drainage bag, under the effect of negative pressure drainage bag, watery blood can pass through drainage tube 20Collection enters negative pressure drainage bag, completes the recovery of watery blood, also can use needle tubing suction watery blood,Create a good working environment to laparoscopic surgery.

The cutter hub sleeve pipe of laparoscopic surgery low temperature cryoprobe of the present invention uses 10-20mm diameter medical thinWall stainless-steel pipe adopts necking down process to make, and forms cutter hub pipe 21 in importing tapered sleeve 9; FlexibleKnife bar 18 adopts medical heavy wall stainless-steel pipe processing, and other parts adopt medical stainless steel or workEngineering plastics shapes.

The guiding of Telescopic knife bar 18 of the present invention, anti-rotation, flexible, stepping and low temperature cryoprobe, bloodIt is the system inventive point of laparoscopic surgery low temperature cryoprobe that water reclaims Functional Design, all belongs to inventionProtection domain. The structural design of any identical functions, as the cross section of Telescopic knife bar 18 changes into manyThe anti-rotating function design that limit shape or pin guide groove form; The watery blood of other forms on scalpel returnsReceive structural design and all fall into protection scope of the present invention, all belong to and invade right of the present invention.

Claims

1. a laparoscopic surgery low temperature cryoprobe, by nitrogen interface (1), regulating handle (2),Blade handling position skewed slot (3), knife bar resilience button (4), location ratchet (5), ratchet bearing pin(6), torsionspring (7), guiding anti-rotary seat (8), import tapered sleeve (9), knife blade (10),Shaft block ring (11), fixed guide seat (12), drainage tube joint (13), blade work position are obliqueGroove (14), spring wedge (15), blade guard bit skewed slot (16), channel of nitrogen hole (17),Telescopic knife bar (18), Compress Spring (19), drainage tube (20), cutter hub pipe (21), bladeHandling boss (22) composition, is characterized in that: the front end of Telescopic knife bar (18) has blade handlingBoss (22) is the rectangular configuration of Telescopic knife bar (18) successively after blade handling boss (22)Section, cylindrical structure section, cylinder are cut flat structural sections, and the rear end of Telescopic knife bar (18) is nitrogenGas interface (1); In cylindrical structure section, there are blade guard bit skewed slot (16), blade work position obliqueGroove (14), blade handling position skewed slots (3); Telescopic knife bar (18) is hollow-core construction, forms nitrogenGas access opening (17); Location ratchet (5), curved spring (7) are fixed on ratchet bearing pin (6)Determine on guide holder (12); Drainage tube (20) is fixed on fixed guide seat (12); Drainage tubeJoint (13) is forever connected to cutter hub pipe (21) rear end; Telescopic knife bar (18) front end is from leadingIn the rectangular opening at anti-rotary seat (8) center, enter, the rectangular configuration section of Telescopic knife bar (18) withThe rectangular opening at guiding anti-rotary seat (8) center coordinates; The rectangle endoporus of guiding anti-rotary seat (8) is with solid2 of cylinder endoporus determining guide holder (12) form the supporting of Telescopic knife bar (18) and axially leadTo; Cutter hub pipe (21), guiding anti-rotary seat (8), fixed guide seat (12), Telescopic knife bar (18)The flexible guidance system of composition knife bar; Spring wedge (15) is fixed on flexible cutter with shaft block ring (11)Bar (18) is upper, and Compress Spring (19) is enclosed within the front end of Telescopic knife bar (18), in guiding anti-rotary seat(8) and between spring wedge (15); Guiding anti-rotary seat (8), Compress Spring (19), flexible cutterBar (18), spring wedge (15) form the resilience system that automatically resets; Knife bar resilience button (4)It is long-armed upper that lower plane is pressed in location ratchet (5), under the effect of curved spring (7), and location ratchet(5) can insert respectively blade guard bit skewed slot (16), blade work position skewed slot (14), blade dressUnload a skewed slot (3), thereby realize three different location, position, knife bar resilience button (4), fixedPosition ratchet (5), ratchet bearing pin (6), torsionspring (7), blade handling position skewed slots (3),Blade work position skewed slot (14), blade guard bit skewed slot (16) composition control and stepping system;The rectangular configuration section of Telescopic knife bar (18) coordinates with the rectangular opening at guiding anti-rotary seat (8) center, compositionPrevent knife bar radial rotating system; The passage of the drainage tube (20) on fixed guide seat (12)The endoporus of hole and drainage tube joint (13) aligns, drainage tube joint (13), fixed guide seat (12),Drainage tube (20) composition watery blood clearing and retrieving system; On the mounting plane of knife blade (10), haveChannel of nitrogen hole (17) dissect half hole and nitrogen interface (1), channel of nitrogen hole (17), operationBlade (10) composition knife blade low-temperature cooling system.

2. laparoscopic surgery low temperature cryoprobe according to claim 1, is characterized in that: cutterBody sleeve pipe rear end is cutter hub pipe (21), and cutter hub sleeve pipe front end is to import tapered sleeve (9).