CN209611253U

CN209611253U - A kind of gas injection valve and gas injection part for surgical instruments

Info

Publication number: CN209611253U
Application number: CN201821607209.4U
Authority: CN
Inventors: 孙宝峰; 马占虎; 黄晔; 马猛
Original assignee: Jiangsu Fengh Medical Equipment Co Ltd
Current assignee: Jiangsu Fengh Medical Equipment Co Ltd
Priority date: 2018-09-29
Filing date: 2018-09-29
Publication date: 2019-11-12
Anticipated expiration: 2028-09-29

Abstract

The utility model discloses a kind of gas injection valve for surgical instruments, including valve body and opening and closing element, and valve body includes accommodating member, and accommodating member includes accommodating hole, and opening and closing element includes spool, and accommodating hole accommodates spool；Spool is moved or is rotated in accommodating hole, so that gas injection valve opens or closes；Valve body further comprises the gas injection part for being set to accommodating member, and gas injection part includes connection structure, and gas injection valve is connected by connection structure with surgical instruments.A kind of gas injection part for surgical instruments, including connection structure and gas injection channel is also disclosed in the utility model；The one end in gas injection channel is connected with gas source；Connection structure includes interconnecting piece, and gas injection part is connected by interconnecting piece with surgical instruments, and after being attached, the other end in gas injection channel is connected with surgical instruments.In the surgical procedure using multiple surgical instruments, best gas injection position can be selected, the gas injection of gas injection valve is installed to surgical instruments in this position, saves the stability of pneumoperitoneum when resource maintains operation simultaneously.

Description

A kind of gas injection valve and gas injection part for surgical instruments

Technical field

The utility model relates to a kind of surgical instruments, more particularly to a kind of gas injection valve and gas injection part for puncture outfit, Belong to area of medical devices.

Background technique

Puncture outfit is a kind of for establishing the surgical instrument for entering abdominal cavity channel, including puncture core and puncture cannula.Having In the surgical procedure of body, doctor is general first to open an osculum in the abdomen of patient, and the puncture core of puncture outfit is then directed at small cut It moves down while mouth reciprocating rotation, so that one end of puncture cannula be driven to enter the abdominal cavity of patient, completes after puncturing, Core will be punctured to extract from puncture cannula, puncture cannula forms the logical of other surgical instruments disengaging.In order to expand the space in abdominal cavity, Increase the distance between each tissue, so that the progress of operation is more conducive to, after the completion of puncture, it usually needs pass through puncture cannula shape At lead to and inject gas in abdominal cavity, therefore need that a gas injection valve is arranged on puncture cannula, after gas injection, closing should Gas injection valve, and make to form sealing inside puncture cannula, to guarantee the stability of pneumoperitoneum, doctor is facilitated to perform the operation.

During operation, it usually needs to the multiple puncture outfits of intraperitoneal insertion, on existing puncture outfit, each puncture One and the integrally formed gas injection valve of puncture outfit are each equipped on device, the two is inseparable, but need to only pass through one when actual operation A puncture outfit gas injection, therefore the gas injection valve on other puncture outfits causes the increase of the waste of resource, cost.Also, with Increasing for quantity, a possibility that infusing Valve leakage also increase, and infuse Valve leakage and will affect the stability of pneumoperitoneum.

Summary of the invention

In view of the deficiencies of the prior art, the utility model is intended to provide a kind of for the gas injection valve of surgical instruments and gas injection Part, gas injection valve and puncture outfit are separately positioned, and are provided with connection structure and connect with surgical instruments, solve above-mentioned technical problem.

The utility model is achieved through the following technical solutions: a kind of gas injection valve for surgical instruments, including valve body and is opened Closing member, the valve body include accommodating member, and the accommodating member includes accommodating hole, and the opening and closing element includes spool, and the accommodating hole holds Set the spool；It is characterized in that, the spool is moved or is rotated in the accommodating hole, so that the gas injection valve is opened or closed It closes；The valve body further comprises gas injection part, and the gas injection part includes connection structure, and the gas injection valve passes through the connection structure It is connected with the surgical instruments.

Preferably, being provided with the first gas injection channel in the gas injection part；The spool includes lock piece and lever, institute It states lock piece to be at least partly placed in the accommodating member and rotate in the accommodating member, the lever and the lock Stop member is integrally formed or is connected；The lock piece includes gas injection structure, and the second gas injection channel is provided in the gas injection structure, The rotation of the spool is so that second gas injection channel is connected to the first gas injection channel selectivity, alternatively, described Lock piece includes the gas injection structure being connected with the lever, and the second gas injection channel, institute are provided in the gas injection structure The rotation of spool is stated so that second gas injection channel passes through the gas injection structure and the first gas injection channel selectivity Connection.

Preferably, being provided with the first gas injection channel in the gas injection part；The spool includes lock piece and operation portion, institute It states lock piece to move in the accommodating member along straight path or move along arc track, at least one end setting of the lock piece There is the operation portion；The lock piece includes gas injection structure, and the second gas injection channel, the spool are provided in the gas injection structure The movement so that second gas injection channel is connected to the first gas injection channel selectivity, alternatively, the lock piece and The operation portion includes the gas injection structure being connected, and the second gas injection channel is provided in the gas injection structure, the spool The movement is so that second gas injection channel is connected by the gas injection structure with first gas injection channel.

Preferably, the connection structure is be connected together structure or screw connection structure or interference fit connection knot Structure.

Preferably, being provided with the first gas injection channel in the gas injection part；The surgical instruments includes ventilation device, described Venting channels are provided in ventilation device, after the gas injection part is connect by the connection structure with the ventilation device, institute Venting channels are stated to be connected to first gas injection channel.

Preferably, the ventilation device includes blow vent, the blow vent has the venting channels；The connection knot Structure includes around at least two engaging valves of first gas injection channel setting and positioned at the end of at least two engagings valve Clamping block, there is gap, after the gas injection valve is connect with the surgical instruments, the clamping block is supported between the engaging valve It is connected to the end wall of the blow vent.

Preferably, being formed with recess on the engaging valve, the surgical instruments is provided with the portion for being sticked in the recess Point.

Preferably, the ventilation device includes blow vent, the blow vent has the venting channels；The connection knot Structure includes external screw thread, and the blow vent includes internal screw thread.

Preferably, the ventilation device includes blow vent, the blow vent has the venting channels；The connection knot Structure is the structure that is connected together, and during the gas injection part is connect with the blow vent, the connection structure enters the ventilation The outer diameter of mouth one end is D1, and after the gas injection part is connect with the blow vent, the connection structure enters described blow vent one end Outer diameter be D2, D1 < D2.

Preferably, the ventilation device includes blow vent, the blow vent has the venting channels；The gas injection part Including interconnecting piece and insertion section；The outer diameter of the insertion section is less than the outer diameter of the interconnecting piece, the insertion section and the connection The one end in portion is integrally formed or is connected, and the other end of the interconnecting piece is integrally formed or is connected with the accommodating member；It is described First gas injection channel includes the gas injection channel being set in the insertion section and the gas injection channel being set in the interconnecting piece, institute The outer diameter for stating interconnecting piece is consistent with the internal diameter of the blow vent.

Preferably, the connection structure is arranged around the gas injection part and has distance between the gas injection part.

Preferably, the connection structure is made of elastic material；Alternatively, the wall of the connection structure offer slot or It is provided with convex block.

Preferably, the gas injection part is integrally formed or is connected with the accommodating member.

The utility model also provides a kind of gas injection part for surgical instruments, and the gas injection part includes connection structure and gas injection Channel；The one end in the gas injection channel is connected with gas source or selectivity connection；The connection structure includes interconnecting piece, described Gas injection part is connected by the interconnecting piece with the surgical instruments, after carrying out the connection, the gas injection channel it is another End is connected with the surgical instruments.

Preferably, the interconnecting piece is arranged around the gas injection part and has distance between the gas injection part.

Preferably, the interconnecting piece by elastic material be made or the wall of the connection structure on offer slot or convex Block.

Preferably, the gas injection channel further includes the part deviated with the central axis of the connection structure.

Preferably, the surgical instruments is puncture outfit.

Compared with prior art, the utility model has the beneficial effects that gas injection valve or gas injection part are independent when unused It is arranged in surgical instruments such as puncture outfit, the two is in discrete state；When needing to carry out gas injection to puncture outfit, gas injection valve or note Gas part is connect by connection structure with puncture outfit, so that gas injection valve or gas injection part can carry out gas injection to puncture outfit.Using more In the surgical procedure of a puncture outfit, best gas injection position can be selected, to puncture outfit installation gas injection valve or note in this position Gas part carries out gas injection, saves the stability of pneumoperitoneum when resource maintains operation simultaneously.

Detailed description of the invention

Fig. 1 is the broken section of the puncture outfit for the gas injection valve that installation has the first spool in the utility model embodiment one Figure；

Fig. 2 is gas injection valve arrangement cross-sectional view in Fig. 1；

Fig. 3 is the bottom view of Fig. 2；

Fig. 4 is the gas injection valve arrangement schematic diagram of Fig. 2；

Fig. 5 is the gas injection valve arrangement cross-sectional view in the utility model embodiment one with second of spool；Fig. 6 is that this is practical Installation has the structural schematic diagram of the gas injection component of the first spool in new embodiment two；

Fig. 7 is enlarged drawing at A in Fig. 6

Fig. 8 is the cross-sectional view of Fig. 6；

Fig. 9 is the gas injection valve arrangement decomposition diagram of Fig. 5；

Figure 10 is the decomposition diagram of the gas injection valve in the utility model embodiment two with second of spool；Figure 11 is this The local structural graph of the puncture outfit of gas injection component is installed in utility model embodiment three；

Figure 12 is gas injection valve arrangement schematic diagram in the present embodiment；

Figure 13 is the cross-sectional view of Figure 11；

Figure 14 is the part of the puncture outfit for the gas injection component that installation has the first spool in the utility model embodiment four Cross-sectional view；

Figure 15 is gas injection valve arrangement schematic diagram in Figure 13；

Figure 16 is the bottom view of Figure 14；

Figure 17 is the cross-sectional view of Figure 14；

Figure 18 is the gas injection valve cross-sectional view in the utility model embodiment four with second of spool.

Appended drawing reference

In FIG. 1 to FIG. 5:

10- gas injection valve, 11- valve body, 111- accommodating member, 1111- accommodation groove, 112- gas injection part, the first gas injection of 1121- are logical Road, 1122- the first gas injection part, the plug division 1123-, 1124- the second gas injection part, 12- spool, 121- injecting hole, 122- lock piece, 1221- rotating part, 1222- lever, the first locating piece of 124-, the second locating piece of 125-, the first operation portion of 126-, 127- second Operation portion, 128- clamping block,

20- blow vent, 21- inner spout, 22- outer spout, 23- container,

30- sealing element, 31- spring, 32- sealing block,

40- casing storehouse；

In Fig. 6~Figure 10: 10- gas injection valve, 11- valve body, 111- accommodating member, 1111- accommodation groove, 112- gas injection part, 1121- First gas injection channel, 113- interconnecting piece, 1131- link slot, 1132- protrusion, 1133- engaging region, the tip 114-,

12- spool, 121- injecting hole, 122- lock piece, 1221- rotating part, 1222- lever, 1223- venthole

20- snorkel, 21- seal washer, 22- fixture block,

30- sealing element,

40- casing storehouse；

In Figure 11~Figure 13:

10- gas injection valve, 11- gas injection part, the outlet side 111-, 112- venthole, 113- interconnecting piece, 1131- link slot, 1132- protrusion, 1133- engage region,

20 air injection pipes, 22 fixture blocks,

30- sealing element, 31- sealing block, 32- elastic component,

40- casing storehouse；

In Figure 14~Figure 18:

10 gas injection valves, 11 valve bodies, 12 spools, 111- accommodating member, 1111 accommodation grooves, 112 gas injection parts, the first gas injection of 1121- Channel, 121- injecting hole, 1122 holding sections, 1,123 first gas injection parts, 1,124 second gas injection parts, a1- engaging valve, a2- clamping block, A3- annular groove, a4- sealing ring, 122- lock piece, 1221- rotating part, 1222- lever, the first locating piece of 124-, 125- Two locating pieces, the first operation portion of 126-, the second operation portion of 127-, 128- clamping block,

20 gas injection ports,

30- sealing element, 31- sealing-plug, 32- seal cap,

40- casing storehouse.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings.Term " the One ", " second " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicates and is indicated The quantity of technical characteristic." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one and be somebody's turn to do Feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise clear It is specific to limit.

The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining the utility model, and cannot It is construed as a limitation of the present invention.

The utility model provides a kind of gas injection valve or gas injection part for surgical instruments, is arranged independently of surgical instruments, Surgical instruments and gas injection valve or gas injection part are in the state of being separated from each other in the initial state, are needing to carry out the surgical instruments It just needs to install gas injection valve or gas injection part when gas injection, on surgical instruments, carries out gas injection.

Further, it also may include other performing the operation that surgical instruments described in the utility model, which may include puncture outfit, Need to carry out the surgical instruments of gas injection in journey.Surgical instruments described in the utility model preferably includes puncture outfit.

Sheath assembly is arranged in puncture outfit, and sheath assembly includes casing storehouse, and there are for the logical of gas injection on the side wall of casing storehouse Depressed structure, ventilation device include blow vent or from blow vent to far from casing storehouse direction extend snorkel, therefore, gas injection valve It is connect by the connection structure of setting with ventilation device, gas injection valve is able to be connected to in casing storehouse, to carry out gas injection.

For gas injection valve at least provided with valve body, the valve body includes at least gas injection part, and it is logical that gas injection is provided in the gas injection part Road, when the gas injection valve is connected with the ventilation device, the gas injection channel is connected to the ventilation device.It is practical at this In novel, gas injection part is extending at least partially into the ventilation device.

Selectivity connection refers to by controlling so that being connected between two components or not being connected to.

Include two kinds of mounting means between gas injection valve and ventilation device in the utility model:

When the first mounting means is that gas injection part protrudes into the ventilation device, between the gas injection part and the ventilation device Other connection relationships are no longer additionally formed, are only opposite sliding between gas injection part outer wall and the ventilation device inner wall between the two Interference fit；

When second of mounting means is that gas injection part protrudes into the ventilation device, between the gas injection part and the ventilation device Other connection relationships are also additionally formed, this kind of mounting means further includes for two class mounting means:

First kind mounting means formed between gas injection part and ventilation device it is detachably connected, in the present invention should Class mounting means can be snap-in structure, for example gas injection part outer wall is connected together with blow vent outer wall, but in the utility model can Releasably connection is not limited to snap-in structure, may also comprise threaded connection etc..

Second class mounting means forms a fixed connection between gas injection part and ventilation device namely gas injection part protrudes into ventilation knot It after structure, can not again be separated between gas injection valve and ventilation device, in the present invention, such mounting means can also be engaging Structure, such as gas injection part outer wall are connected together with blow vent inner wall；

And the utility model can also be divided into two kinds according to the different structure of gas injection valve, one is include opening and closing element such as spool Gas injection valve, another kind refer to the gas injection part for being not provided with opening and closing element, the difference of above-mentioned gas injection valve and gas injection part is only that whether set Opening and closing element is set, it is more in view of the type of mounting means, therefore the utility model is preferably described according to the difference of mounting means respectively A embodiment.

The embodiment of the first mounting means is described below

Embodiment one

The present embodiment provides a kind of puncture cannulas of puncture outfit, including sheath assembly and gas injection valve 10.Sheath assembly is into one Step includes casing storehouse 40 and the sealing element 30 in blow vent 20, and casing storehouse 40 includes the blow vent that perforation is set to its side wall 20, interior blow vent 20 includes venting channels, and sealing element 30 includes sealing block 32, and sealing block 32 seals 20 selectivity of blow vent.

Gas injection valve 10 and 20 selective connection of blow vent." selective connection " mentioned here refers to that gas injection valve 10 can It is mounted on blow vent 20, forms the puncture cannula of integral type；Gas injection valve 10 can also be removed from blow vent 20, so that note Air valve 10 and blow vent 20 are separated from each other.When gas injection valve 10 is connected with blow vent 20, gas injection valve 10 is at least partially disposed at logical In port 20 and gas injection valve 10 and blow vent 20 are connected with each other, when gas injection valve 10 and blow vent 20 are separated from each other, gas injection valve 10 are not arranged in blow vent 20.

Referring to Fig. 1, blow vent 20 includes inner and outer wall, offers outer spout 22 on outer wall, offers inner tube on inner wall Mouth 21, inner spout 21 is connected to form blow vent 20 with outer spout 22, and container 23, container 23 are provided between inner and outer wall It is connected to blow vent 20.

Sealing element 30 includes sealing block 32 and elastic component, and one end of sealing block 32 is connect with elastic component, and elastic component setting exists In container 23, the elastic component in the utility model, which can be, can generate elastically-deformable spring 31, elastic slice etc., practical new at this In one embodiment of type, elastic component is spring 31.By the compression and recovery of spring 31, so that sealing block 32 moves up and down, Selectively to be sealed to gas injection port road.

Referring to figure 2. to Fig. 4, the gas injection valve 10 provided in the present embodiment includes at least a valve body 11, and valve body 11 at least wraps Include gas injection part 112.When needing that a part of gas injection valve 10 is mounted on the puncture outfit to when abdominal cavity gas injection by a puncture outfit Blow vent 20 in, realize gas injection operation.In order to facilitate installation of the gas injection valve 10 in blow vent 20, referring again to Fig. 1, gas injection It is defined as plug division 1123 in the front end insertion blow vent 20 of part 112, it is close to be located at gas injection part 112 for the plug division 1123 in other words One end of puncture outfit, therefore the gas injection channel in gas injection part 112 also extends through plug division 1123 together, plug division 1123 with Gas injection part 112 be integrally formed or be connected and the outer diameter of plug division 1123 be less than gas injection part 112 outer diameter.Correspondingly, inner tube The internal diameter of mouth 21 is less than the internal diameter of outer spout 22, and the outer diameter of plug division 1123 is consistent with the internal diameter of inner spout 21, gas injection part 112 Outer diameter is consistent with the internal diameter of outer spout 22.During gas injection valve 10 and blow vent 20 are installed, plug division 1123 presses sealing It is mobile to container 23 that block 32 leaves outer spout 22, and in order to facilitate the stress of sealing block 32, sealing block 32 is towards outer spout 22 Face is inclined-plane.As gas injection valve 10 is constantly moved into inner spout 21, the continuous compressed spring 31 of sealing block 32 contracts into container 23 Into.When plug division 1123 is protruded into inner spout 21, and the front end of gas injection part 112 is abutted with the wall of inner spout 21, gas injection valve 10 with Blow vent 20 completes installation, and gas injection part 112 is contained in blow vent 20 at this time, and 112 outer wall of gas injection part and 20 inner wall of blow vent Between in interference fit, and the front end due to gas injection part 112 is abutted with the wall of inner spout 21, and the wall of inner spout 21 is as a kind of Stop configurations stop gas injection part 112 to continue mobile to puncture outfit direction, referring to Fig. 1.

After the completion of gas injection, if the 10 pairs of operations of the gas injection valve of the position have an impact, can by pulling out gas injection valve 10, thus Gas injection valve 10 is disassembled from blow vent 20, at this point, since sealing block 32 is without the thrust of gas injection valve 10, in spring 31 Under elastic force effect, sealing block 32 is depressed and is again introduced into venting channels, and sealing element 30 blocks the blow vent 20 again to be made It obtains and forms sealing in puncture outfit casing tube storehouse 40.

10 property of can choose of gas injection valve in the present embodiment spool 12 is set, that is to say, that can be set can not also set Set spool 12.Referring to fig. 2, the accommodating member 111 for accommodating spool 12 is additionally provided with outside gas injection part 112, inside accommodating member 111 Accommodation groove 1111 is offered, the first gas injection channel 1121 that accommodation groove 1111 and gas injection part 112 open up is interconnected, accommodation groove 1111 and first the at an acute angle or right angle setting that intersects of gas injection channel 1121 hold in one embodiment of the utility model Set slot 1111 and the first at right angles setting of gas injection channel 1121.

And spool 12 is accommodated in accommodation groove 1111, spool 12 moves in accommodation groove 1111, so that gas injection valve 10 is opened It opens or closes, there is no clamping stagnation, the cell walls of spool 12 and accommodation groove 1111 in order to make movement of the spool 12 in accommodation groove 1111 Between there is inevitable gap.Lubricating oil is filled in gap between spool 12 and accommodation groove 1111, thus in gap Form oil film, form oil-tightening form between spool 12 and accommodation groove 1111, so guarantee spool 12 and accommodation groove 1111 it Between leakproofness.

Spool 12 includes injecting hole 121, and injecting hole 121 is the through-hole for being disposed through spool 12.It is described to run through including straight Line style runs through, broken line type runs through and shaped form runs through, and correspondingly, through-hole includes linear type through-hole, broken line type through-hole and shaped form Through-hole.The second gas injection channel is formd in through-hole.

Spool 12 moves in accommodation groove 1111, so that in the second gas injection channel of spool 12 and gas injection part 112 First gas injection channel, 1121 selectivity connection.For the convenience of description, being boundary with spool 12, gas injection part 112 is close to the portion of puncture outfit Divide and be defined as the first gas injection part 1122, the part far from puncture outfit is defined as the second gas injection part 1124: when spool 12 is first When position, the second gas injection channel of spool 12 is not connected to the first gas injection channel 1121 in gas injection part 112, and spool 12 is by first Gas injection part 1122 and the second gas injection part 1124 separate, so that the first gas injection channel 1121 and the second note in the first gas injection part 1123 The first gas injection channel 1121 in gas part 1124 is not connected to.When spool 12 is at the second position, the second gas injection channel of spool 12 Be connected to the first gas injection channel 1121 in gas injection part 112 so that the first gas injection channel 1121 in the first gas injection part 1123 with The first gas injection channel 1121 in second gas injection part 1124 is interconnected by the second gas injection channel in injecting hole 121.According to Motion mode of the spool 12 in valve body 11, the present embodiment list two kinds of spools 12, make separately below to both spools 12 It specifically describes:

The first spool 12:

Referring to fig. 2 to Fig. 4, the spool 12 of gas injection valve 10 includes lock piece 122 in the present embodiment, and lock piece 122 includes rotation Transfer part 1221 and lever 1222, rotating part 1221 is generally cylindrical body, and injecting hole 121 is to be disposed through rotating part 1221 The bottom end of through-hole, rotating part 1221 is exposed from accommodation groove 1111, is provided with lever on the side at the top of rotating part 1221 1222, lever 1222 is integrally formed or is connected with the top of rotating part 1221.

Rotation process handle 1222 simultaneously drives rotating part 1221 to rotate in accommodation groove 1111, so that rotating part 1221 exists It is converted between first position and the second position.When rotating part 1221 turns to first position, the injecting hole 121 of rotating part 1221 It is kept completely separate and (is not connected to) with the gas injection channel 1121 in gas injection part 112, the first gas injection channel 1121 of gas injection part 112 is revolved The peripheral wall of transfer part 1221 is closed, to make gas injection valve 10 in the state (not shown) closed；When rotating part 1221 turns to When the second position, as shown in figure 3, when being in the second position, the in the injecting hole 121 of rotating part 1221 and gas injection part 112 The connection of one gas injection channel 1121, gas injection valve 10 is in the open state and gas injection rate is most fast.

In order to keep rotating part 1221 fixed with respect to valve body 11 in first position and the second place, nonvoluntary rotation is shaken Dynamic, the gap between rotating part 1221 and accommodation groove 1111 cannot be too big, using between rotating part 1221 and accommodation groove 1111 Stiction so that reached at first position in rotating part 1221 or when the second place can not by external force opposite valve Body 11 is fixed.In addition, can infused in order to further ensure the sealing between spool 12 and valve body 11 when closed of gas injection valve 10 Gasket is arranged in the junction of gas part 112 and accommodating member 111, when gas injection valve 10 is closed, the outer wall of rotating part 1221 and sealing Pad abuts, to avoid the gap air leak between spool 12 and valve body 11.

In addition, in order to facilitate the operation of person's determination for 1221 two positions of rotating part in use, referring to Fig. 3, rotating part 1221 bottom is prominent outwardly to form the first locating piece 124 and the second locating piece 125, is provided on the bottom end of accommodating member 111 Clamping block 128, lever 1222 rotate, and drive rotating part 1221 to rotate, so that the first locating piece 124 or the second locating piece 125 abut with clamping block 128.When the first locating piece 124 is abutted with clamping block 128, gas injection valve 10 is in the state closed；When When second locating piece 125 is abutted with clamping block 128, gas injection valve 10 is in the state opened, and the gas injection of gas injection valve 10 at this time It is fastest.Rotating part 1221 can be switched fast between two positions, fast implement the opening and closing of gas injection valve 10.Clamping block 128 be that rotating part 1221 provides specific open and close position instruction and provides feel for operator, is opened so that locking piece 122 is in It opens or closed position is without in an intermediate position.

It should be noted that the present embodiment can be omitted the second gas injection part 1124, injecting hole 121 is included in lever 1222 Interior horizontal-extending part, the part extended vertically in rotating part 1221 and horizontal-extending part, each part mentioned above are connected Logical, one end of injecting hole 121 is connected with gas source, 1121 selectivity of the first gas injection channel of the other end and the first gas injection part 1122 Connection.

Second of spool 12:

Referring to Fig. 5, the spool 12 of gas injection valve 10 includes lock piece 122, the first operation portion 126 and the second behaviour in the present embodiment Make portion 127.The top of lock piece 122 is arranged in first operation portion 126, and the bottom of lock piece 122 is arranged in the second operation portion 127 End.The height of lock piece 122 is greater than the height of accommodation groove 1111, and the height is the size of the vertical direction along Fig. 5.First behaviour The outer diameter for making portion 126 and the second operation portion 127 is greater than the internal diameter of 1111 radial section of accommodation groove, to play backstop action.

Injecting hole 121 is the through-hole for being disposed through lock piece 122, passes through the first operation portion of pressing 126 or the second operation It is converted between the first position and the second position so that lock piece 122 is moved along accommodation groove 1111 in portion 127.Work as lock piece 122 when being moved to first position, the first note in the second gas injection channel and gas injection part 112 in the injecting hole 121 of lock piece 122 Gas channel 1121 is kept completely separate and (is not connected to), and gas injection valve 10 is in the state (not shown) closed；When lock piece 122 is mobile The first gas injection channel in the second gas injection channel and gas injection part 112 when to the second position, in the injecting hole 121 of lock piece 122 1121 connections, gas injection valve 10 is in the state opened.As shown in figure 5, the second gas injection channel of the injecting hole 121 in lock piece 122 With when first gas injection channel 1121 is connected in gas injection part 112, the gas injection rate in gas injection valve 10 is most fast.

In order to enable spool 12 to fix in first position and the second place with respect to valve body 11, lock piece 122 and accommodation groove Gap between 1111 cannot be too big, using the stiction between lock piece 122 and accommodation groove 1111 so that in locking Part 122 can not be fixed opposite valve body 11 when mobile by external force.

Further, 12 two positions of spool are determined in use in order to facilitate the operation of person, by setting lock piece Position of 122 height and injecting hole 121 on lock piece 122, so that when the second operation portion 127 is abutted with accommodating member 111 When, the second gas injection channel of the injecting hole 121 of lock piece 122 is connected to the first gas injection channel 1121 in gas injection part 112, gas injection valve 10 in the state fully opened, and the gas injection speed of gas injection valve 10 is most fast at this time, when the first operation portion 126 is supported with accommodating member 111 When connecing, the first gas injection channel 1121 in the second gas injection channel and gas injection part 112 in the injecting hole 121 on lock piece 122 is not Connection, gas injection valve 10 are in completely closed state.Lock piece 122 can be switched fast between two positions, fast implement gas injection The opening and closing of valve 10.

It should be noted that the present embodiment can be omitted the second gas injection part 1124, injecting hole 121 is included in lock piece 122 It is connected with the part and the horizontal-extending part in lock piece 122, each part mentioned above extended vertically in an operation portion, infuses One end of stomata 121 is connected with gas source, and the other end is connected to 1121 selectivity of the first gas injection channel of the first gas injection part 1123.

The embodiment of second of mounting means is described below

The present embodiment provides a kind of puncture cannulas of puncture outfit, including sheath assembly and the gas injection valve 10 being independently arranged.Set Tube assembly further comprises casing storehouse 40, and casing storehouse 40 includes the snorkel 20 that perforation is set to its side wall.Inside snorkel 20 It is provided with sealing element 30, sealing element 30 is sealed snorkel 20, so that forming sealing state in casing storehouse 40.

In the present embodiment, after gas injection valve 10 being installed on snorkel 20, in addition to gas injection part 112 is fixed in air injection pipe, Snorkel 20 also forms additional connection relationship with gas injection valve 10.This kind of additional connection relationship includes being detachably connected and being fixedly connected Two ways.

In the present embodiment, preferably snorkel 20 and gas injection valve 10 gas injection part be connected with each other, therefore, thus the two it Between be equally divided into snorkel 20 and gas injection part it is detachably connected be fixedly connected.

The embodiment of first kind mounting means is described below

In such mounting means, after puncture outfit is mounted gas injection valve 10, the gas injection part of snorkel 20 and gas injection valve 10 is removable Connect with unloading, it is detachably connected to refer to, after snorkel 20 is connected with gas injection part, can also mutually dismantle separation formed it is independent Individual.

In the present embodiment, the preferably outer wall of gas injection part outer wall and snorkel 20 is detachably connected, and further preferably two It is connected together between person, specific structure is as follows:

The wall of snorkel 20, interconnecting piece 113 are provided with link slot 1131. close to the one end in casing storehouse 40

Fixture block 22 has been provided projectingly on the outer wall of snorkel 20.Link slot 1131 penetrates through 113 side wall of interconnecting piece.Link slot 1131 include along the part of interconnecting piece 113 axially extending part and the circumferentially extending along interconnecting piece 113, and two parts substantially form L-type.The edge of circumferentially extending part is provided with protrusion 1132, as shown in Figure 6.Preferably, there are two being opened up on interconnecting piece 113 Link slot 1131, further, two link slots 1131 are spaced 180 °；Accordingly, on the outer wall of snorkel 20 there are two settings Fixture block 22.Gas injection part is inserted into snorkel 20, fixture block 22 enters axially into link slot 1131 by the entrance of link slot 1131, rotates Gas injection part, fixture block 22 are circumferentially advanced and are squeezed, cross protrusion 1132 hence into the engaging region 1133 of link slot 1131 In, gas injection valve 10 is installed with snorkel 20, and the side wall of protrusion 1132 and fixture block 22 abuts against for fixture block 22 to be locked at Region 1133 is engaged, referring to Fig. 7.Protrusion 1132 makes gas injection valve 10 and the connection of snorkel 20 closer, more firm, avoids infusing Air valve 10 is loosened or is fallen off from snorkel 20, simultaneously because gas injection valve 10 is closely connect with snorkel 20, it is avoided to move Position is to influence sealing between the two.

When disassembly is desired, rotary connector 113 or to protrusion 1132 force and simultaneously rotary connector 113 so that Fixture block 22, which leaves engaging region 1133, can be such that gas injection part and snorkel 20 separates, and gas injection valve 10 is made to become independent again Body.

Certainly, gas injection valve 10 is not limited to the above-mentioned mode engaged with the connection type of snorkel 20, can also be it His form.Such as the use elastic material of interconnecting piece 113 is made, the internal diameter of interconnecting piece 113 is consistent with the outer diameter of snorkel 20, as general When gas injection valve 10 is mounted on snorkel 20, interconnecting piece 113 is made to envelope snorkel by means of the elastic deformation of interconnecting piece 113 20 part, made by means of elastic force that interconnecting piece 113 generates the wall of snorkel 20 be fastened on interconnecting piece 113 and gas injection part it Between distance in.

In practical applications, we encounter various surgery situations, the utility model after disassembly puncture outfit whether Sealing state can also be maintained again, amplified out actual operation and needed the case where disposably installing gas injection valve in the process and need multiple The case where installing gas injection valve repeatedly, respectively corresponds following embodiments two and embodiment three.

Embodiment two

Referring to Fig. 6, in the present embodiment, the sealing element 30 in casing storehouse 40 includes sealing ring 31 and seal 32, close Seal ring 31 is in cylindrical body, in at least partially embedded snorkel 20 of sealing ring 31, and is interference fitted with snorkel 20, avoids sealing ring 31 form the occurrence of gas leakage is caused in gap with snorkel 20.Sealing element 30 is sealed snorkel 20.32 edge of seal One end for being radially arranged in cylindric sealing ring 31 of sealing ring 31, with the anchor ring at 31 end of closing seam ring.Seal 32 with The fastening means of sealing ring 31 can be bonding, welding etc..Specifically, the seal 32 in the present embodiment is integrated sealing Film, or by multiple sealing flaps by abutting against or partly overlapping mode is formed, such as the seal in the present embodiment 32 be integrated sealing film, it is with Y-shaped or " ten " font groove, or multiple sealing flaps is used to abut against the duck to be formed Nozzle type, or be to be partly overlapped the sealing surface formed by central angle more than or equal to 90 ° of four sealing flaps.The groove makes Seal 32 moves towards generation crack along groove under axial force effect.The material of seal 32 can be rubber.

In addition, being additionally provided with seal washer 21 in the end of the close gas injection valve 10 of snorkel 20, seal washer 21 is surround The central axis of snorkel 20 is arranged, so that seal washer 21 is to gas injection valve 10 when gas injection valve 10 is mounted on snorkel 20 It can effectively be sealed with the connecting place of snorkel 20, avoid gas leakage.

Therefore it is directed to this sealing element 30, once installed gas injection valve 10, seal 32 can be broken by gas injection part 112 Bad, after dismantling again, puncture outfit can not also maintain sealing state again, therefore this kind of puncture outfit and gas injection valve are only applicable to once Property installation after no longer need to extract gas injection valve 10 scene.

Referring to Fig. 7~9,10 property of can choose of gas injection valve in the present embodiment spool 12 is set, that is to say, that Ke Yishe Spool 12 can also be not provided with by setting.Specifically, valve body 11 include gas injection part 112 and accommodating member 111, it is preferable that gas injection part 112 with Accommodating member 111 is vertically arranged.It is provided with the first gas injection channel 1121 in gas injection part 112, offers accommodation groove in accommodating member 111 1111.Spool 12 includes lock piece 122, and is provided with the second gas injection channel, and 122 part of lock piece is placed in accommodation groove It in 1111, and can be rotated in accommodation groove 1111, so that the second gas injection channel in the first gas injection channel 1121 and lock piece 122 It is connected or is not connected to, i.e., gas injection valve 10 switches between open state and closed state.

Based on the sealing element 30 in embodiment two, one end of gas injection part 112 is tip 114, is conducive to gas injection part 112 across close Envelope body 32 is connected to air injection pipe 10.Tip 114 offers multiple through-holes, the gas outlet as the first gas injection channel 1121.In axis Upwards, tip 114 can be located inside interconnecting piece 113, flush or expose interconnecting piece 113 with 113 outer edge of interconnecting piece.

When gas injection valve 10 is mounted on snorkel 20, tip 114 is protruded into snorkel 20, and passes through seal 32, is made It obtains the first gas injection channel 1121 to be connected to snorkel 20, the section tubular wall of snorkel 20 is placed in gas injection part 112 and interconnecting piece In 113 interstitial spaces formed, outer wall of the interconnecting piece 113 around snorkel 20.Seal washer 21 on snorkel 20, which is located at, to be connected It in gap between socket part 113 and gas injection part 112, and is abutted with the outer wall of accommodating member 111, to make gas injection valve 10 and ventilation Sealing is formed between pipe 20, avoids generating gas leakage between gas injection valve 10 and snorkel 20.

According to the structure and installation relation of spool 12 and valve body 11, spool 12 in the present embodiment there are many structure, below The utility model is described further with enumerating the first spool 12 and second of spool 12, it should be understood that, Gas injection valve 10 in the present embodiment is not limited to two kinds of hereinafter cited structures.

The first spool 12:

Referring to Fig. 6~9, the first gas injection valve 10 is plug valve, and valve body 11 includes 112 He of gas injection part for being mutually perpendicular to intersect Accommodating member 111.The both ends of gas injection part 112 allow gas to pass through, and one end is opening, the other end is that surface offers through-hole Tip 114, accommodating member 111 it is closed at one end.Accommodation groove 1111 includes rotating part for accommodating lock piece 122, lock piece 122 1221 and the lever 1222 positioned at 1221 one end of rotating part.Behaviour's handle handle 1222 is integrally formed or is connected with rotating part 1221.

One end of rotating part 1221 is protruded into the accommodation groove 1111 in accommodating member 111, rotating part 1221 and accommodation groove 1111 Between with very little magnitude of interference so that between rotating part 1221 and accommodation groove 1111 have certain compactness, and side Just rotating part 1221 rotates in accommodation groove 1111, and without external forces, between rotating part 1221 and accommodating member 111 Relative positioning under the action of stiction.The magnitude of interference makes the inner wall of the outer wall fitting gas injection part 112 of rotating part 1221, To make rotating part 1221 close the first gas injection channel 1121 in gas injection part 112.Perforation offers gas injection on rotating part 1221 Hole 121 forms the second gas injection channel (not shown).By rotation process handle 1222 rotating part 1221 is rotated, so that Injecting hole 121 is connected to the first gas injection channel 1121 or is not connected in other words in the second gas injection channel.According to use habit, lever 1222 extending direction and the extending direction in the second gas injection channel are parallel to each other.

When the gas injection valve 10 in the present embodiment need to be used to realize gas injection, snorkel 20 is inserted at the tip 114 of gas injection part 112 In, interconnecting piece 113 is moved along the outer wall of snorkel 20 to casing storehouse inner cavity.When seal 32 is that integral type seals film, push Gas injection part 112 punctures tip 114 and passes through the sealing film to make gas injection part 112 be connected to snorkel 20, when seal 32 When for more petaloid sealing surfaces, pushing gas injection part 112 to make, tip 114 is passed through at the abutting of more petaloid sealing surfaces or overlapping is to make Gas injection part 112 is connected to snorkel 20.Link slot 1131 during gas injection part 112 pushes and rotates, on interconnecting piece 113 Engage completely with the fixture block 22 on snorkel 20.

To guarantee the stability connected, it is equipped with connection screw thread at the other end of the gas injection part 112 of valve body 11, in order to gentle Source connection.Under original state, for gas injection valve 10 in the state opened, lever 1222 and the extending direction of gas injection part 112 are mutually flat It goes, the second gas injection channel in rotating part 1221 is connected to the first gas injection channel 1121 in gas injection part 112, from gas injection part 112 The other end input gas, gas successively pass through the first gas injection channel 1121, the second gas injection channel, the first gas injection channel 1121 to The tip 114 of gas injection part 112 forms pneumoperitoneum via 10 sleeve pipe storehouse 40 of air injection pipe subsequently into abdominal cavity.When in operation When not needing gas injection, rotation process handle 1222 drives rotating part 1221 to rotate in accommodation groove 1111, makes lever 1222 and note Gas part 112 is mutually perpendicular to (not shown), and the second gas injection channel separates with the first gas injection channel 1121 and is not connected to, the first note Gas channel 1121 is disconnected by rotating part 1221, and gas injection valve 10 is in closed state.

Second of spool 12:

Referring to Fig.1 0, the spool 12 in the present embodiment is ball valve, and valve body 11 includes gas injection part 112 and accommodating member 111, gas injection One end of part 112 is set on accommodating member 111, and gas injection part 112 is vertically arranged with accommodating member 111, and the other end of gas injection part 112 is Offer the tip 114 of through-hole.Gas injection part 112 is integrally formed or is connected with accommodating member 111.One end of rotating part 1221 is protruded into In accommodation groove 1111 in accommodating member 111, and rotating part 1221 and accommodating member 111 are clearance fit.Rotation in the present embodiment Sphere part or pole piece can be used in transfer part 1221, but is not limited to sphere part or pole piece, only needs that rotating part 1221 can be made to accommodate It is rotated in part 111.In order to enhance the leakproofness between rotating part 1221 and gas injection part 112, the first gas injection of gas injection part 112 The end of channel 1121 towards accommodating member 111 is provided with sealing ring, to be bonded with rotating part 1221.Lever 1222 and rotating part Interconnected gas injection access is offered in 1221, forms the second gas injection channel, the part rotating part being placed in gas injection part 112 Venthole 1223 is offered on 1221 wall, which is the gas outlet in the second gas injection channel, the second gas injection channel Air inlet is arranged on one end of lever 1222.Rotating part 1221 is rotated by rotation process handle 1222, so that second Gas injection channel is connected to the first gas injection channel 1121 or is not connected to.

When the gas injection valve in the present embodiment need to be used to realize gas injection, snorkel 20 is inserted at the tip 114 of gas injection part 112 In, tip 114 is connected to gas injection part 112 with snorkel 20 across seal 32, outer wall of the interconnecting piece 113 along snorkel 20 Mobile to casing storehouse 40, above-mentioned movement and the rotation of interconnecting piece 113 make link slot 1131 and snorkel 20 on interconnecting piece 113 On fixture block 22 completely engage.

Under original state, for gas injection valve 10 in the state opened, lever 1222 and the extending direction of gas injection part 112 are mutually flat It goes, the second gas injection channel in rotating part 1221 is connected with the first gas injection channel 1121 in gas injection part 112, from lever 1222 air inlet inputs gas, and gas is via the second gas injection channel, the first gas injection channel 1121 and by the point of gas injection part 112 114 output of end forms pneumoperitoneum via 10 sleeve pipe storehouse 40 of air injection pipe hence into abdominal cavity.After completing gas injection operation, rotation Turn lever 1222, drives rotating part 1221 to rotate in accommodation groove 1111, be mutually perpendicular to lever 1222 with gas injection part 112 (not shown), the second gas injection channel are separated from each other with the first gas injection channel 1121 and (are not connected to), and gas injection valve 10 is in closing State.

Embodiment three

Sealing element 30 can be diversified forms in the present embodiment, itself can be made with sealing block 31 of elastic material, work as note When air valve 10 is installed, sealing block 31 itself generates elastic deformation, is partially displaced, after gas injection valve 10 is withdrawn, sealing block 31 Due to the elastic force retracted for clearance of itself, blow vent is resealed；Or sealing block 31 is fixedly connected with an elastic component 32, works as note When air valve 10 is installed, elastic component 32 occurs elastic deformation and sealing block 31 is driven to shift, and after gas injection valve 10 is withdrawn, elastic component 32 is returned Sealing block 31 is driven to reset again.The structure of above-mentioned several sealing elements 30, so that sealing element 30 can also after the disassembly of gas injection valve 10 is withdrawn It is enough to block gas injection port again, do not influence continuing to use for puncture outfit itself, therefore this kind of puncture outfit can be used in needing to pacify repeatedly It is filled under the scene of air valve 10.

For above-mentioned sealing element, the setting of the end of the gas injection part 11 of gas injection valve 10 allows for as early as possible moving sealing block 31 Position is preferred.For example, a part of sealing block 31 and the inner wall of snorkel 20 are fixed in one embodiment of the utility model, In other words, 31 side of sealing block is fixedly connected with the inner wall of snorkel 20 or elastic component 32, and the other side is then free end, therefore The end of gas injection part 11 must exert a force to the free end, could relatively easily shift sealing block 31；In the another of the utility model In one embodiment, sealing block 31 is mounted on the end of spring, abuts it with 20 inner wall of snorkel, at this time the end of gas injection part 11 Portion must exert a force to 31 center of sealing block, and sealing block 31 can just shifted.

Referring to Figure 12, gas injection valve 10 includes gas injection part 11 in the present embodiment, is provided with the first gas injection channel in gas injection part 11. One end of gas injection part 11 is inlet end, and inlet end is connected with gas source, and the other end is outlet side 111, and outlet side 111 is for being inserted into Output into the venting channels of snorkel 20 and for gas.It is inserted into snorkel 20 in order to facilitate gas injection part 11, outlet The shape at end 111 is the truncated cone, and the edge of 111 end of outlet side is set as chamfering, and it is logical to enter ventilation convenient for outlet side 111 It is in contact in road and with sealing element 30.Outlet side 111 is provided with venthole 112, i.e., inputs from the inlet end of gas injection part 11 First gas injection channel flowing of the gas in gas injection part 11, exports from venthole 112 and enters in venting channels.

Preferably, being directed to above-mentioned different sealing element 30, outlet side 111 is settable with 11 center overlapping of axles of gas injection part, I.e. setting may also set up in 113 center of interconnecting piece and deviate a certain distance with 11 central axis of gas injection part, which is greater than 0, thus It exerts a force so that outlet side 111 is convenient to sealing block 31.

The gas injection part without opening and closing element can be used in the present embodiment, due to the structure of sealing element 30, so that gas injection valve 10 is dismantled After withdrawing, sealing element 30 can also block snorkel 20 again, therefore if desired control the unlatching or stopping of gas injection, only need to control Whether gas injection part processed is connected with each other with snorkel 20；It need to only control whether outlet side 111 applies sealing element 30 in other words Power.

The embodiment of the second class mounting means is described below

Example IV

In such mounting means, the preferred blow vent 20 of ventilation device, after puncture outfit is mounted gas injection valve 10,20 He of blow vent The gas injection part 112 of gas injection valve 10 is fixedly connected, and is fixedly connected and is referred to, can not again be divided after blow vent 20 and the connection of gas injection part 112 From the independent individual of formation.

In the present embodiment, preferably 112 outer wall of gas injection part is fixedly connected with the inner wall of blow vent 20, and further preferably two Person is connected together, and specific structure is as follows:

When original state, blow vent 20 is not connected to gas injection valve 10, and the inner opening of blow vent 20 is made by the closure of sealing element 30 It obtains and forms sealing state in casing storehouse 40.Sealing element 30 further comprises the seal cap 32 and seal cap being arranged in casing storehouse 40 The sealing-plug 31 of 32 connections.The area of sealing-plug 31 be more than or equal to blow vent 20 internal diameter, and sealing-plug 31 be plugged in it is logical The inner opening of port 20.In one embodiment of the utility model, sealing-plug 31 is made of elastic material, and in order to guarantee For sealing-plug 31 to the sealing effect of blow vent 20, sealing-plug 31 and blow vent 20 are interference fit.Gas injection part 112 opens sealing-plug 31 enter in blow vent 20, since sealing-plug 31 is connected in seal cap 32, when sealing-plug 31 is detached from blow vent 20, Sealing-plug 31 will not influence the progress of operation because falling.

When needing through a puncture outfit to when abdominal cavity gas injection, a part of gas injection valve 10 is inserted into the logical of the puncture outfit In port 20, gas injection operation is realized.In order to facilitate installation of the gas injection valve 10 in blow vent 20, referring again to Figure 15, gas injection part 112 parts for protruding into blow vent 20 are defined as holding section 1122, and holding section 1122 includes multiple engaging valve a1, multiple engaging valve a1 It is arranged around the central axis interval of gas injection part 112, is provided with clamping block a2, and each card on one end of each engaging valve a1 Close the outer wall that block a2 protrudes from corresponding engaging valve a1.

Engage and form recess on valve a1, is provided with the part for being sticked in the recess in blow vent 20.Specifically, recess by The engaging surface valve a1 is recessed to 1121 direction of the first gas injection channel, is located at the part that engaging valve a1 protrudes into blow vent 20, Bulge loop that the inner wall setting of blow vent 20 matches with the recess width (namely length axial along gas injection part 112) or Convex block, when engaging valve a1 is fixed in blow vent 20, bulge loop or convex block are sticked in the recess, when gas injection part 112 exists When axis moves up, the two sidewalls of recess and the side wall of bulge loop or convex block are abutted each other, gas injection part 112 is prevented to move in the axial direction It is dynamic.Such structure can not only be continued to move to backstop gas injection part 112 to the inner cavity in casing storehouse 40, but also can be with backstop gas injection part 112 It is mobile to the direction far from casing storehouse 40.

When gas injection valve 10 to be fitted into blow vent 20, each engaging valve a1 is pressed first, is made between each engaging valve a1 Gap becomes smaller, and the size that one end of each engaging valve a1 where each clamping block a2 is formed by ring becomes smaller, engaging one end valve a1 Outer diameter is D1, is protruded into the entrance of blow vent 20 conducive to engaging valve a1.Inner wall at least partially inclined-plane in blow vent 20, makes to ventilate Mouth 20 is inwardly open in the state shunk along outward opening.Push gas injection valve 10 mobile to blow vent 20, the end of multiple engaging valve a1 Portion constantly inwardly retracts into inner opening along inclined-plane, and the end of multiple engaging valve a1 and clamping block a2 then open sealing-plug 31, and the inner opening of blow vent 20 is passed through, the ring that engaging valve a1 is formed becomes large-sized, and the outer diameter of engaging one end valve a1 is D2, D1 < D2, the outer wall for engaging valve a1 are abutted with the formation of the inner wall of blow vent 20.Pull out gas injection valve 10 so that clamping block a2 with The inner opening end face of blow vent 20, which is formed, to abut, i.e. the side wall that clamping block a2 is connected to the end of blow vent 20.Gas injection valve 10 with Blow vent 20 is mutually clamped, and the installation of gas injection valve 10 is completed, referring to Figure 14.

In order to avoid the gap air leak between each engaging valve a1, the length of engaging valve a1 is less than the length of blow vent 20, when After gas injection valve 10 and blow vent 20 complete installation, engaging valve a1 should be able to be completely disposed at the inner wall in blow vent 20 and with blow vent 20 It is formed and is abutted.

Further, referring to Figure 14, in order to reinforce the sealing effect of the gas injection part 112 in valve body 11 Yu blow vent 20, gas injection The outer wall of part 112 circularizes slot a3 to 1121 concave shape of the first gas injection channel, specifically, annular groove a3 is located at accommodating member Between 111 and holding section 1122, sealing ring a4 is provided in annular groove a3.After gas injection valve 10 and blow vent 20 are completed to install, Sealing ring a4 is between gas injection part 112 and blow vent 20, with the installation between further sealing ventilation mouth 20 and gas injection valve 10 Gap.

By above structure, when gas injection part 112 is mounted in blow vent 20, due to being opened in clamping block a2 and blow vent 20 Mouth end face, which is formed, to abut, and when gas injection part 112 is mobile to the direction for withdrawing puncture outfit, the inner opening end face of blow vent 20 can be prevented Gas injection part 112 is mobile to the direction, so that gas injection part 112 can only be fixed in blow vent 20, gas injection valve 10 and puncture outfit It forms a fixed connection.

Gas injection valve 10 in the present embodiment includes valve body 11 and spool 12.Referring to Fig. 1, valve body 11 includes 111 He of accommodating member Gas injection part 112.Gas injection part 112 is equipped with the first gas injection channel 1121, and including the first gas injection part 1123 and the second gas injection part 1124, the first gas injection part 1123 is set to the side of accommodating member 111, and the second gas injection part 1124 is set to the another of accommodating member 111 Side.First gas injection part 1123 and the second gas injection part 1124 are integrally formed or are connected with accommodating member 111.First gas injection part 1123 For being fixedly connected with blow vent 20, the first gas injection part 1123 is arranged in close to one end of puncture outfit in holding section 1122, and second Gas injection part 1124 with gas source for being connected.Accommodation groove 1111 is offered inside accommodating member 111, is opened up inside gas injection part 112 The first gas injection channel 1121 is stated, accommodation groove 1111 and the first gas injection channel 1121 are interconnected, accommodation groove 1111 and the first gas injection Channel 1121 intersects the setting of at an acute angle or right angle, preferably at right angles setting.

Spool 12 is accommodated in accommodation groove 1111, spool 12 moves in accommodation groove 1111, so that gas injection valve 10 is opened Or close, in order to make movement of the spool 12 in accommodation groove 1111 there is no clamping stagnation, the cell wall of spool 12 and accommodation groove 1111 it Between there is inevitable gap.Lubricating oil is filled in gap between spool 12 and accommodation groove 1111, thus the shape in gap At oil film, oil-tightening form is formed between spool 12 and accommodation groove 1111, and then guarantee between spool 12 and accommodation groove 1111 Leakproofness.Spool 12 includes injecting hole 121, and injecting hole 121 is the through-hole for being disposed through spool 12.It is described to run through including straight Line style runs through, broken line type runs through and shaped form runs through, and correspondingly, through-hole includes linear type through-hole, broken line type through-hole and shaped form Through-hole.Second gas injection channel is set in injecting hole 121.Spool 12 moves in accommodation groove 1111, so that the note of spool 12 The second gas injection channel in stomata 121 is connected to 1121 selectivity of the first gas injection channel in gas injection part 112.When spool 12 is When one position, the second gas injection channel of the injecting hole 121 of spool 12 does not connect with the first gas injection channel 1121 in gas injection part 112 Logical, spool 12 separates the first gas injection part 1123 and the second gas injection part 1124, so that the first gas injection in the first gas injection part 1123 Channel 1121 is not connected to the first gas injection channel 1121 in the second gas injection part 1124.When spool 12 is at the second position, spool Second gas injection channel of 12 injecting hole 121 is connected to the first gas injection channel 1121 in gas injection part 112, so that the first gas injection part The first gas injection channel 1121 in the first gas injection channel 1121 and the second gas injection part 1124 in 1123 is interconnected by 121 phase of injecting hole It is logical.

According to motion mode of the spool 12 in valve body 11, the utility model lists two kinds of spools 12, below with first Kind spool 12 and second of spool 12 make further the gas injection valve 10 that two kinds of spools 12 are respectively adopted in the utility model It is bright.

The first spool 12

Referring to Figure 15 to 17, the spool 12 of gas injection valve 10 includes lock piece 122 in the present embodiment, and lock piece 122 includes rotation Transfer part 1221 and lever 1222, rotating part 1221 is generally cylindrical body, and injecting hole 121 is to be disposed through rotating part 1221 The bottom end of through-hole, rotating part 1221 is exposed from accommodation groove 1111, is provided with lever on the side at the top of rotating part 1221 1222, lever 1222 is integrally formed or is connected with the top of rotating part 1221.

Rotation process handle 1222 simultaneously drives rotating part 1221 to rotate in accommodation groove 1111, so that rotating part 1221 exists It is converted between first position and the second position.When rotating part 1221 turns to first position, the injecting hole 121 of rotating part 1221 It is kept completely separate and (is not connected to) with the first gas injection channel 1121 in gas injection part 112, the first gas injection channel on gas injection part 112 1121 are closed by the peripheral wall of rotating part 1221, to make gas injection valve 10 in the state (not shown) closed；Work as rotating part 1221 when turning to the second position, the second gas injection channel of the injecting hole 121 of rotating part 1221 and the first note in gas injection part 112 Gas channel 1121 is connected to, and gas injection valve 10 is in the state opened.As shown in figure 3, when at the second position, the note of rotating part 1221 Second gas injection channel of stomata 121 is connected to the first gas injection channel 1121 in gas injection part 112, and the gas injection rate of gas injection valve 10 is most Fastly.

In addition, in order to facilitate the operation of person's determination for 1221 two positions of rotating part in use, referring to Figure 16, rotating part 1221 bottom is prominent outwardly to form the first locating piece 124 and the second locating piece 125, is provided on the bottom end of accommodating member 111 Clamping block 128, lever 1222 rotate, and drive rotating part 1221 to rotate, so that the first locating piece 124 or the second locating piece 125 abut with clamping block 128.When the first locating piece 124 is abutted with clamping block 128, gas injection valve 10 is in the state closed；When When second locating piece 125 is abutted with clamping block 128, gas injection valve 10 is in the state opened, and the gas injection of gas injection valve 10 at this time It is fastest.Rotating part 1221 can be switched fast between two positions, fast implement the opening and closing of gas injection valve 10.Clamping block 128 be that rotating part 1221 provides specific open and close position instruction and provides feel for operator, is opened so that rotating part 1221 is in It opens or closed position is without in an intermediate position.

It should be noted that the present embodiment can be omitted the second gas injection part 1124, injecting hole 121 is included in lever 1222 Interior horizontal-extending part, the part extended vertically in rotating part 1221 and horizontal-extending part, each part mentioned above are connected Logical, one end of injecting hole 121 is connected with gas source, 1121 selectivity of the first gas injection channel of the other end and the first gas injection part 1123 Connection.

Second of spool 12

Referring to Figure 18, the spool 12 of gas injection valve 10 includes lock piece 122, the first operation portion 126 and second in the present embodiment Operation portion 127.The top of lock piece 122 is arranged in first operation portion 126, and the bottom of lock piece 122 is arranged in the second operation portion 127 End.The height of lock piece 122 is greater than the height of accommodation groove 1111, and the height is the size of the vertical direction along Figure 18.First The outer diameter of operation portion 126 and the second operation portion 127 is greater than the internal diameter of 1111 radial section of accommodation groove, to play backstop action.

Injecting hole 121 is the through-hole for being disposed through lock piece 122, passes through the first operation portion of pressing 126 or the second operation It is converted between the first position and the second position so that lock piece 122 is moved along accommodation groove 1111 in portion 127.Work as lock piece 122 when being moved to first position, and the injecting hole 121 of lock piece 122 divides completely with the first gas injection channel 1121 in gas injection part 112 From (not being connected to), gas injection valve 10 is in the state (not shown) closed；When lock piece 122 is moved to the second position, lock The injecting hole 121 of stop member 122 is connected to the first gas injection channel 1121 in gas injection part 112, and gas injection valve 10 is in the state opened.Such as Shown in Fig. 6, lock piece 122 injecting hole 121 with first gas injection channel 1121 is connected in gas injection part 112 when, in gas injection valve 10 Gas injection rate it is most fast.

In order to enable spool 12 to fix in first position and the second place with respect to valve body 11, lock piece 122 and accommodation groove Gap between 1111 cannot be too big, using the stiction between lock piece 122 and accommodation groove 1111 so that in locking Part 122 is reached at first position or when the second place and can not be fixed opposite valve body 11 by external force.

Further, 12 two positions of spool are determined in use in order to facilitate the operation of person, by setting lock piece Position of 122 height and injecting hole 121 on lock piece 122, so that when the second operation portion 127 is abutted with accommodating member 111 When, injecting hole 121 is connected to the first gas injection channel 1121 in gas injection part 112 on lock piece 122, and gas injection valve 10 is in and fully opens State, the gas injection speed of gas injection valve 10 is most fast at this time, when the first operation portion 126 is abutted with accommodating member 111, lock piece 122 On injecting hole 121 be not connected to the first gas injection channel 1121 in gas injection part 112, gas injection valve 10 is in the shape that completely closes State.Lock piece 122 can be switched fast between two positions, fast implement the opening and closing of gas injection valve 10.

It should be noted that the present embodiment can be omitted the second gas injection part 1124, injecting hole 121 is included in lock piece 122 It is connected with the part and the horizontal-extending part in lock piece 122, each part mentioned above extended vertically in an operation portion, infuses One end of stomata 121 is connected with gas source, and 1121 selectivity of the first gas injection channel of the other end and the first gas injection part 1123 connects It is logical.

Gas source in the utility model includes pneumoperitoneum apparatus, air pump or pressure cylinder.

In conclusion the gas injection valve of the offer of the utility model may be selectively installed on puncture outfit, puncture outfit does not have to Configuration and its integrally formed gas injection valve, simplify the structure and preparation process of puncture outfit, save the preparation cost of puncture outfit, Meanwhile reducing puncture outfit occupied space in the course of surgery, to provide bigger operating space for doctor.Although The embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is exemplary, cannot It is construed as a limitation of the present invention, those skilled in the art can be to above-mentioned reality in the scope of the utility model Apply example be changed, modify, replacement and variant.

Claims

1. a kind of gas injection valve for surgical instruments, including valve body and opening and closing element, the valve body include accommodating member, the accommodating member Including accommodating hole, the opening and closing element includes spool, and the accommodating hole accommodates the spool；It is characterized in that, the spool is in institute It states and moves or rotate in accommodating hole, so that the gas injection valve opens or closes；The valve body further comprises gas injection part, the note Gas part includes connection structure, and the gas injection valve is connected by the connection structure with the surgical instruments.

2. gas injection valve as described in claim 1, which is characterized in that be provided with the first gas injection channel in the gas injection part；It is described Spool includes lock piece and lever, and the lock piece is at least partly placed in the accommodating member and in the accommodating member Middle rotation, the lever are integrally formed or are connected with the lock piece；The lock piece includes gas injection structure, the gas injection The second gas injection channel is provided in structure, the rotation of the spool is so that second gas injection channel and first gas injection Channel selectivity connection, alternatively, the lock piece includes the gas injection structure being connected, the gas injection structure with the lever Inside be provided with the second gas injection channel, the rotation of the spool so that second gas injection channel by the gas injection structure with The first gas injection channel selectivity connection.

3. gas injection valve as described in claim 1, which is characterized in that be provided with the first gas injection channel in the gas injection part；It is described Spool includes lock piece and operation portion, and the lock piece is moved along straight path in the accommodating member or moved along arc track Dynamic, at least one end of the lock piece is provided with the operation portion；The lock piece includes gas injection structure, in the gas injection structure It is provided with the second gas injection channel, the movement of the spool is so that second gas injection channel and first gas injection channel are selected Selecting property connection, alternatively, the lock piece includes the gas injection structure being connected, setting in the gas injection structure with the operation portion There is the second gas injection channel, the movement of the spool is so that second gas injection channel passes through the gas injection structure and described the One gas injection channel is connected.

4. gas injection valve as described in claim 1, which is characterized in that the connection structure is be connected together structure or screw thread company Binding structure or interference fit connection structure.

5. gas injection valve as described in claim 1, which is characterized in that be provided with the first gas injection channel in the gas injection part；It is described Surgical instruments includes ventilation device, is provided with venting channels in the ventilation device, when the gas injection part is tied by the connection After structure is connect with the ventilation device, the venting channels are connected to first gas injection channel.

6. gas injection valve as claimed in claim 5, which is characterized in that the ventilation device includes blow vent, the blow vent tool There are the venting channels；The connection structure includes engaging valves around at least two of the setting of first gas injection channel and being located at The clamping block of the end of at least two engagings valve, has gap between the engaging valve, the gas injection valve and it is described outside After the connection of section's instrument, the clamping block is connected to the end wall of the blow vent.

7. gas injection valve as claimed in claim 6, which is characterized in that be formed with recess, the surgical instruments on the engaging valve It is provided with the part for being sticked in the recess.

8. gas injection valve as claimed in claim 5, which is characterized in that the ventilation device includes blow vent, the blow vent tool There are the venting channels；The connection structure includes external screw thread, and the blow vent includes internal screw thread.

9. gas injection valve as claimed in claim 5, which is characterized in that the ventilation device includes blow vent, the blow vent tool There are the venting channels；The connection structure is the structure that is connected together, during the gas injection part is connect with the blow vent, The outer diameter that the connection structure enters described blow vent one end is D1, after the gas injection part is connect with the blow vent, the company The outer diameter that binding structure enters described blow vent one end is D2, D1 < D2.

10. gas injection valve as claimed in claim 5, which is characterized in that the ventilation device includes blow vent, the blow vent tool There are the venting channels；The gas injection part includes interconnecting piece and insertion section；The outer diameter of the insertion section is less than the interconnecting piece Outer diameter, the insertion section are integrally formed or are connected with one end of the interconnecting piece, the other end of the interconnecting piece and the appearance Part is set to be integrally formed or be connected；First gas injection channel includes the gas injection channel being set in the insertion section and is set to Gas injection channel in the interconnecting piece, the outer diameter of the interconnecting piece are consistent with the internal diameter of the blow vent.

11. gas injection valve as claimed in claim 5, which is characterized in that the connection structure around the gas injection part be arranged and There is distance between the gas injection part.

12. gas injection valve as claimed in claim 11, which is characterized in that the connection structure is made of elastic material；Alternatively, institute The wall for stating connection structure offers slot or is provided with convex block.

13. gas injection valve as described in claim 1, which is characterized in that the gas injection part is integrally formed with the accommodating member or phase Connection.

14. such as the described in any item gas injection valves of claim 1 to 13, which is characterized in that the surgical instruments is puncture outfit.

15. a kind of gas injection part for surgical instruments, which is characterized in that the gas injection part includes connection structure and gas injection channel； The one end in the gas injection channel is connected with gas source or selectivity connection；The connection structure includes interconnecting piece, the gas injection Part is connected by the interconnecting piece with the surgical instruments, after carrying out the connection, the other end in the gas injection channel with The surgical instruments is connected.

16. gas injection part as claimed in claim 15, which is characterized in that the interconnecting piece around the gas injection part be arranged and with There is distance between the gas injection part.

17. gas injection part as claimed in claim 15, which is characterized in that the interconnecting piece is made of elastic material or the company Slot or convex block are offered on the wall of binding structure.

18. gas injection part as claimed in claim 15, which is characterized in that the gas injection channel further includes and the connection structure The part that central axis deviates.

19. such as the described in any item gas injection parts of claim 15 to 18, which is characterized in that the surgical instruments is puncture outfit.