CN109692031A - Closedown structure and its puncture outfit - Google Patents

Abstract

The invention discloses a kind of closedown structure and puncture outfits, it is selectively connected for the first component and second component, comprising: at least one first snap-in structure is set on the first component, first snap-in structure includes the first cantilever and the second cantilever, and the first cantilever and the second cantilever court extend downwardly；An at least position limiting structure, is set on the first component, and from the first component towards extending downwardly, position limiting structure has sliding slot；At least one second snap-in structure is set to the second component, and the second snap-in structure is corresponding with the first snap-in structure, and the second snap-in structure includes third cantilever；And an at least locking structure, it is partially incorporated into second component, locking structure is corresponding with position limiting structure, and locking structure has sliding block；When closedown structure is in the lock state, sliding block is accommodated in sliding slot, the first cantilever and the second cantilever backstop third cantilever；The closedown structure is in non-locking state, and sliding block is removed from sliding slot, and the first cantilever and the second cantilever are separated from each other with third cantilever.

Description

Closedown structure and its puncture outfit

Technical field

The present invention relates to a kind of laparoscopically surgical operation instrument, closed more particularly to having used in the laparoscopic surgery The puncture outfit of lock construction.

Background technique

Check, in abdominal operation and other minimally invasive or surgical operations that puncture outfit is essential surgical instrument in abdominal cavity. Puncture outfit can be established in the stomach wall of human body enters channel, so that for stapler or other surgical instruments, (such as endoscope is cut Knife, seal wire, conduit, filter, bracket etc.) enter it is intraperitoneal, and provide gas disengaging channel, with control operation needed for gas Abdomen, to carry out inspection or surgical procedure.

In laparoscopic surgery, surgical instrument is that the channel provided by disposable puncture device enters human body, and to lesion group It knits and is cut off, generally require the lesion tissue for taking out excision outward by the casing of puncture outfit after the completion after the completion of operation, and Shell and switch cap is arranged in the top of the casing of existing puncture outfit, is respectively arranged with gasket in shell and switch cap, wherein turns The bore for changing cap is typically small, so that doctor is difficult to be taken out lesion tissue from inside to outside in the course of surgery, influences to operate.

To solve the above problems, the connection type of shell and switch cap to existing puncture outfit is improved, pass through rotation Turn to be selectively connected between blocking mechanism realization shell and switch cap, when needing to take out lesion tissue, be removed from shell Switch cap, and then taken out convenient for lesion tissue.Blocks rotation structure includes adjutage, block ring and elastic component, adjutage rotation It changes cap to extend towards shell, adjutage includes engaging slot；Block ring is located in shell, and can around the central axis rotation of shell, Block ring includes clamping block, and clamping block is corresponding with engaging slot；One end that elastic component is connected to block ring maintains block ring In latched position；When latched position, wall extension enters in shell from the fluting of shell, and clamping block enters in engaging slot, so that Switch cap is fixed to each other with shell；When non-locked position, around the central axis rotation block ring of shell, clamping block is from engaging slot It is detached from, conversion can be removed from shell.Wherein, block ring needs to squeeze bullet during around the central axis rotation of shell Property part, the problem of elastic force of elastic component itself makes block ring be easy to appear deviation, block ring rotation is caused to have some setbacks, caused Blocks rotation structure smooth can not switch under lock state and non-locking state.

In view of this, the present invention proposes a kind of new closedown structure and the puncture outfit using it, to overcome existing rotation Closedown structure is easy to appear the abnormal problem of rotation.

Summary of the invention

In view of the deficiencies of the prior art, the present invention is intended to provide a kind of new closedown structure and the puncture outfit using it, are closed Lock construction eliminates existing revolving block ring, overcomes the problem of revolving block ring easily deviates.The present invention passes through Following technical scheme is realized:

The present invention provides a kind of closedown structure, is selectively connected for the first component and second component, the closedown structure Include: at least one first snap-in structure, be set on the first component, every one first snap-in structure includes the first cantilever and the Two cantilevers, first cantilever and second cantilever court extend downwardly；An at least position limiting structure is set on the first component, And from the first component towards extending downwardly, each position limiting structure has sliding slot；At least one second snap-in structure, be set to this Two components, at least one second snap-in structure and at least one first snap-in structure correspond, every one second snap-in structure packet Include third cantilever；And an at least locking structure, part are incorporated into the second component, an at least locking structure and at least one Position limiting structure corresponds, and each locking structure has sliding block；When the closedown structure is in the lock state, which is accommodated in this In sliding slot, first cantilever and the second cantilever backstop third cantilever；When the closedown structure is in non-locking state, the sliding block It is removed from the sliding slot, first cantilever and second cantilever are separated from each other with the third cantilever.

As optional technical solution, which has a first surface, first snap-in structure be set to this first On surface and towards extending downwardly, the both ends of first cantilever are separately connected the first surface and second cantilever, first cantilever Extending direction intersect with the extending direction of second cantilever, the connection include be fixedly connected and be integrally formed.

As optional technical solution, first cantilever and second cantilever are mutually perpendicular to constitute L-type hook.

As optional technical solution, an at least position limiting structure is disposed on the first surface and court extends downwardly, each Position limiting structure includes being arranged in parallel and at interval the first locating convex block and the second locating convex block, which is located at first convex Between block and second locating convex block.

As optional technical solution, an at least accommodation groove is set in the second component, an at least accommodation groove with should At least one first snap-in structure corresponds, and each third cantilever is set in each accommodation groove, and the third cantilever is at least One wall is incorporated on the cell wall of corresponding accommodation groove.

As optional technical solution, which is switch cap, which includes switch cap upper cover and switch cap Lower cover；The second component is shell, which includes case top lid and shell lower cover, which is located at the switch cap lower cover Between the shell lower cover, which includes opposite second surface and third surface, the second surface and the switch cap Adjacent, an at least locking structure is incorporated on the third surface.

As optional technical solution, each locking structure further includes pressing ontology and pushing and pressing part, the pressing ontology and should Sliding block is respectively arranged at the opposite first side and second side of the pushing and pressing part, presses the pressing ontology and the sliding block certainly should It is removed in sliding slot.

As optional technical solution, which has top surface, which protrudes out the top surface.

As optional technical solution, which includes side wall, which has around the second component, opposite Second surface and third surface, and the side wall convexedly stretches on the third surface, which has an at least opening portion, this is at least One opening portion and an at least locking structure correspond；Each locking structure further includes pressing ontology and pushing and pressing part, the pushing and pressing Portion and the sliding block are located at the inside of the side wall, and the outside of the side wall is exposed and be located in the self-corresponding opening portion of the pressing ontology.

As optional technical solution, each locking structure further includes a stopper section, an at least stopper section and this at least one Locking structure corresponds, and each stopper section includes baffle, which extends downwardly from third surface court.

As optional technical solution, each locking structure further includes elastic component, and the both ends of the elastic component abut respectively should Baffle and the pushing and pressing part.

As optional technical solution, the first protrusion is set on the baffle, which is arranged the second protrusion, this is second prominent Portion is opposite with first protrusion, and the opposite end of the elastic component is sheathed on respectively on first protrusion and second protrusion.

As optional technical solution, a through-hole is set in the second component, which is located at the opening portion and the gear Between plate, which can be located in the through-hole.

As optional technical solution, which is spring or Z-shaped elastic slice.

As optional technical solution, when the first component is located above the second component, the first component is along counterclockwise Direction is rotated to realize that at least one second snap-in structure engages at least one first snap-in structure with this, alternatively, the first component It is rotated in a clockwise direction to realize that at least one second snap-in structure engages at least one first snap-in structure with this.

The present invention provides a kind of puncture outfit, including switch cap, shell and closedown structure, which is as described above Closedown structure, the first component are switch caps, which is shell, which select the switch cap and the shell Connect to selecting property.

As optional technical solution, which includes switch cap lower cover, which includes case top lid, and this first Part is switch cap lower cover, which is case top lid, which select the switch cap lower cover and the case top lid Connect to selecting property.

The present invention provides a kind of puncture outfit, and shank, switch cap and closedown structure including puncturing core, the closedown structure are such as The upper closedown structure, the first component are the shanks for puncturing core, which is switch cap.

The present invention provides closedown structure and the puncture outfit using it, when closedown structure is in the lock state, the first engaging knot Structure is mutually clamped with the second snap-in structure, and the sliding block of locking structure is accommodated in the sliding slot of position limiting structure, so that switch cap and shell Body is fixedly connected；When closedown structure is in non-locking state, the first snap-in structure is separated from each other with the second snap-in structure, locking The sliding block of structure skids off in the sliding slot of position limiting structure, so that switch cap is removed from shell.Compared with prior art, of the invention Closedown structure be different from the design of existing wall extension and block ring, and the locking structure in closedown structure is on moving process edge Linear movement, improve mobile stability, avoid the occurrence of the selection of switch cap and shell caused by the offset of locking structure It connects to property and abnormal problem occurs.

Detailed description of the invention

Figure 1A is the switch cap of puncture outfit of the present invention and the schematic diagram of shell.

Figure 1B is the switch cap of puncture outfit of the present invention and the decomposition diagram of shell.

Fig. 2A and Fig. 2 B is the schematic diagram for being placed on different perspectives in Fig. 1 under switch cap.

Fig. 2 C is the enlarged diagram of dotted portion in Fig. 2A.

Fig. 3 A and Fig. 3 B are the schematic diagram in different perspectives of case top lid in Fig. 1.

Fig. 4 A and Fig. 4 B are locking structure in Fig. 1 in the schematic diagram of different perspectives.

Fig. 5 A and Fig. 5 B be locking structure in conjunction with case top lid after the schematic diagram in different perspectives.

Fig. 6 A to Fig. 6 E is the assembling schematic diagram of the switch cap lower cover and case top lid in Figure 1B.

Fig. 7 is the enlarged diagram of region A in Fig. 6 C.

Fig. 8 is the enlarged diagram of region B in Fig. 6 E.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.It is retouched in of the invention In stating, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " counterclockwise ", " axis To ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings.In addition, art Language " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicate institute The quantity of the technical characteristic of instruction." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least One this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise bright It is really specific to limit.

The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to be used to explain the present invention, and cannot understand For limitation of the present invention.

The upper and lower direction that technical characteristic is related in the following contents is subject to the upper and lower direction along Figure 1A, Figure 1B, in Figure 1A In, switch cap 101 is located at the top of shell 102, in fig. ib, be followed successively by from top to bottom switch cap upper cover 10, switch cap lower cover 20, Case top lid 30 and shell lower cover 40.The orientation of component is different from Figure 1A and Figure 1B in some attached drawings of the present invention, merely to being in The convenience of existing structure.

Fig. 1 is the switch cap of puncture outfit of the present invention and the decomposition diagram of shell；Fig. 2 is that switch cap lower cover shows in Fig. 1 It is intended to；Fig. 3 A and Fig. 3 B are the schematic diagram in different perspectives of case top lid in Fig. 1；Fig. 4 A and Fig. 4 B are locking structure in Fig. 1 In the schematic diagram of different perspectives；Fig. 5 A and Fig. 5 B be locking structure in conjunction with case top lid after the schematic diagram in different perspectives.

As illustrated in figures 1A and ib, the present invention provides closedown structure and the puncture outfit 100 using it, puncture outfit 100 include Switch cap 101, shell 102, casing (not shown) and puncture core (not shown), switch cap 101, shell 102 and casing successively connect It connects, punctures core and successively wear and be placed in switch cap 101, shell 102 and casing.Wherein, one end of shell 102 and switch cap 101 are selectively connected by closedown structure, specifically, the case top lid 30 of shell 102 and the switch cap of switch cap 101 It is selectively connected between lower cover 20 by closedown structure, the opposite other end of shell 102 is fixedly connected with casing；Preferably Ground, shell 102 and casing are integrally formed.In Minimally Invasive Surgery, one end of casing extends in abdominal cavity of patients and fixes behind appropriate location, mentions For surgical instrument and the channel for the disengaging for maintaining gas needed for stablizing pneumoperitoneum.

With continued reference to Figure 1A and Figure 1B, switch cap 101 includes switch cap upper cover 10 and switch cap lower cover 20, the first gasket It is set in the first aperture 103 of switch cap lower cover 20, for providing sealing function；Wherein, switch cap upper cover 10 and switch cap The combination of lower cover 20 and the combination of the first gasket and switch cap lower cover 20 are respectively the known technology of this field Means can refer to existing connection type and be attached.Shell 102 includes case top lid 30 and shell lower cover 40, the second sealing Pad is set in the second aperture 104 of case top lid 30, for providing sealing function, wherein case top lid 30 and shell lower cover The combination of 40 combination and the second gasket and case top lid 30 is respectively the known technology means of this field, can It is attached referring to existing connection type.In the present embodiment, shell lower cover 40 further includes air inlet 41, air inlet 41 and gas injection Valve is (not shown) to be connected with each other, and gas enters the channel that abdominal cavity forms pneumoperitoneum when providing operation.

The present invention will stress how to realize between closedown structure and shell 102 and switch cap 101 and selectively connect It connects.It is selectively connected and is meant that: is fixed between the first component and second component to connect when closedown structure is in the lock state It connects；When closedown structure is in non-locking state, the first component can be removed from second component.Wherein, the first component is switch cap 101, second component is shell 102.Alternatively, the first component is the shank for puncturing core, second component is switch cap 101.

As shown in Figure 1A to Fig. 2 C, switch cap lower cover 20 has first surface 21, and first surface 21 faces case top lid 30, Closedown structure includes at least one first snap-in structure 22 and an at least position limiting structure 23, at least one first snap-in structure 22 and at least One position limiting structure 23 is respectively arranged on first surface 21, and at least one first snap-in structure 22 and at least a position limiting structure 23 divides Do not extend from first surface 21 towards case top lid 30 (or shell 102), that is, extends downwardly.In the present embodiment, at least 1 The quantity of one snap-in structure 22 is, for example, four, and four the first snap-in structures 22 are uniformly arranged on first surface 21, wherein the One surface 21 is, for example, annulus shape surface, and four the first snap-in structures 22 uniformly arrange on annulus shape surface, but not with This is limited.In other embodiments of the present invention, when at least the quantity of one first snap-in structure 22 is two or more, first It can be non-homogeneous arrangement on surface 21.It is understood that uniformly arrangement refers between the first snap-in structure 22 of arbitrary neighborhood Angle it is equal, non-homogeneous arrangement refers to that the angle between all the first adjacent snap-in structures 22 includes unequal situation.

With continued reference to Fig. 2A to Fig. 2 C, every one first snap-in structure 22 includes the first cantilever 221 and the second cantilever 222, the The both ends of one cantilever 221 are separately connected first surface 21 and the second cantilever 222, the first cantilever 221, the second cantilever 222 and first The first engaging space is collectively formed in surface 21, and the first inclined-plane 223 is arranged far from the first end of the first cantilever 221 in the second cantilever 222, Second snap-in structure 32 is (as shown in Figure 3A) to be entered first and engages space for guiding on the first inclined-plane 223, the first cantilever 221 and the Common the second snap-in structure of backstop 32 of two cantilever 222.In the present embodiment, the first cantilever 221 and the second cantilever 222 are mutually perpendicular to structure L-shaped hook.

Each position limiting structure 23 includes the first locating convex block 231 and the second locating convex block 232, the first locating convex block 231 and Second locating convex block 232 is parallel and interval is arranged, and slides so that having between the first locating convex block 231 and the second locating convex block 232 Slot 233, sliding slot 233 are used to provide the sliding space of the sliding block 54 of locking structure 50 (as shown in Figure 4 A).

As shown in Figure 1B, Fig. 3 A to Fig. 3 B, case top lid 30 has opposite second surface 31 and third surface 34, is turning It changes after cap lower cover 20 connect with shell lower cover 40, second surface 31 and first surface 21 are opposite.Closedown structure further includes at least one Second snap-in structure 32, at least one second snap-in structure 32 are set on second surface 31, at least one second snap-in structure 32 with At least one first snap-in structure 22 corresponds, that is, arrangement mode of at least one second snap-in structure 32 on second surface 31 It is corresponding in the upper arrangement mode of first surface 21 at least one first snap-in structure 22.In the present embodiment, at least one second The quantity of snap-in structure 32 is four, and four the second snap-in structures 32 are uniformly arranged on second surface 31, wherein second surface 31 be, for example, annulus shape surface, and four the second snap-in structures 32 are uniformly arranged around annulus shape surface, and but not limited to this. In other embodiments of the present invention, when at least the quantity of one second snap-in structure 32 is two or more, in second surface 21 On can be in non-homogeneous arrangement.

With continued reference to Fig. 3 A and Fig. 3 B, an at least accommodation groove 33 is set in case top lid 30, an at least accommodation groove 33 with At least one second snap-in structure 32 corresponds, preferably, an at least accommodation groove 33 is to run through third surface from second surface 31 34 run through slot.Every one second snap-in structure 32 includes third cantilever 321, and third cantilever 321 is located in corresponding accommodation groove 33, And the end wall of one end of third cantilever 321 is incorporated on the corresponding cell wall of accommodation groove 33, in the present embodiment, third cantilever 321, It is incorporated on the corresponding cell wall adjacent with the cell wall of accommodation groove 133 with the adjacent one side wall of the end wall, in other words, third cantilever 321 be, for example, the adjutage extended from an at least cell wall for accommodation groove 33, and adjutage makes the width of accommodation groove 33 become smaller.

The upper surface of third cantilever 321 and the second surface 31 of case top lid 30 are flush, alternatively, third cantilever 321 Upper surface is slightly below the second surface 31 of case top lid 30, so that third cantilever 31 is accommodated in corresponding accommodation groove 33.In addition, Third cantilever 321 is suspended on the second end in accommodation groove 33 with the second inclined-plane 322, the second end be it is with third suspended wall 321, The opposite other end in the one end combined with the cell wall of accommodation groove 33, the second inclined-plane 322 and the first mutually guiding of inclined-plane 223, So that third cantilever 321 be easily accessible the first snap-in structure 22 with first surface 21 is formed first engages in space so that One snap-in structure 22 is mutually clamped with the second snap-in structure 32, and the first cantilever 221 and the common backstop third of the second cantilever 222 are outstanding Arm 321.

In the present embodiment, in corresponding accommodation groove 33 is arranged in case top lid 30, accommodation groove 33 can be used for providing the first card Before and after conjunction structure 22 is combined with the second snap-in structure 32, accommodating space needed for the first snap-in structure 22；Meanwhile in In one snap-in structure, 22 rotation process, it is mobile towards the second snap-in structure 32 that accommodation groove 33 can guide the first snap-in structure 22.

Case top lid 30 has side wall 35, side wall 35 circular second surface 31 and third surface 34, and side wall 35 from third Surface 34 is extended downwardly towards the direction of shell lower cover 40, and the extension of side wall 35 has an at least opening portion 351, locking Structure 50 (as shown in Fig. 4 A and 5A) enters the inside of shell 102 from opening portion 351.An at least opening portion 351 in the present embodiment Quantity be one, but not limited to this.In other embodiments of the present invention, at least the quantity of an opening portion 351 be two and More than.

Corresponding to opening portion 351, at least a stopper section 37, at least a backstop are set on the third surface 34 of case top lid 30 Portion 37 and an at least locking structure 50 correspond, and stopper section 37 is from third surface 34 towards the direction of shell lower cover 40, that is, downward Extend.Stopper section 37 includes baffle 371 and is set to the first protrusion 372 on baffle 371, and the first protrusion 372 is located at 371 face of baffle To on the surface of 351 side of opening portion.In the present embodiment, baffle 371 is, for example, U-shaped baffle.

With continued reference to Fig. 3 B, case top lid 30 further includes through-hole 36, through-hole 36 be set to opening portion 351 and stopper section 37 it Between, through-hole 36 is the through hole through second surface 31 and third surface 34, and in the present embodiment, through-hole 36 is quadrangle aperture, But not limited to this.In conjunction with Fig. 5 A and Fig. 5 B it is found that through-hole 36 is used to provide the sliding block 54 and limit of locking structure 50 in the present invention The channel that bit architecture 23 combines, that is, locking structure 50 is incorporated on the third surface 34 of case top lid 30, the cunning of locking structure 50 Block 54 enters from through-hole 36 in the sliding slot 233 of position limiting structure 23, and by the first spacing block set 231 and the second spacing block set Rotation in 232 limitation 54 horizontal directions of sliding block.

As shown in Fig. 4 A to 5B, closedown structure further includes an at least locking structure 50, and an at least locking structure 50 is incorporated into Shell 102 (as shown in Figure 1A), at least a locking structure 50 is corresponded with an at least opening portion 351, and an at least locking knot Structure 50 and an at least position limiting structure 23 correspond.A locking structure 50 is provided only in puncture outfit 100 as shown in Figure 1A, but It is not limited.In other embodiments of the present invention, the quantity of an at least locking structure 50 is, for example, 2, is symmetrically combined In on shell 102.

Each locking structure 50 includes pressing ontology 51, pushing and pressing part 52, the second protrusion 53 and sliding block 54, wherein pushing and pressing part 52 have opposite first side and second side, and pressing ontology 51 is set to first side, the second protrusion 53 and sliding block 54 In second side, pressing ontology 51 has opposite a top surface 511 and bottom surface 512, top surface 511 towards third surface 34 be direction On, bottom surface 521 is under towards shell lower cover 40, and sliding block 54 is connected to pushing and pressing part 52 close to the top of top surface 511, and, it is sliding Block 54 convexedly stretches in 511 top of top surface, i.e., sliding block 54 protrudes out top surface 511, wherein the upper surface and top surface at the top of pushing and pressing part 52 511 flush.Locking structure 50 is assembled in puncture outfit 100, and the top of pushing and pressing part 52 is lower than the first bottom of the first locating convex block 231 Portion and the second bottom of the second locating convex block 232, the first bottom and the second bottom are respectively further from first surface 21, the first convex First bottom of block 231 and the second bottom of the second locating convex block 231 will not be stretched out from through-hole 36 and be lower than third surface 34, To avoid pushing and pressing part 52 and top surface 511 in moving process with the first locating convex block 231 of position limiting structure 23 and the second convex Block 232 interferes.It includes: that sliding block 54 is set on top surface 511 and projects upwards that sliding block 54, which protrudes out top surface 511, alternatively, sliding Block 54 is set to the side wall at the top of pushing and pressing part 52 and stretches out the upper surface at the top of pushing and pressing part 52, i.e. top surface 511 upwards.

In conjunction with Figure 1A, Fig. 5 A to Fig. 5 B it is found that locking structure 50 is assembled in shell 102, pushing and pressing part 52 is located at side wall 35 Inside, pressing ontology 51 is located at the outside of side wall 35 via opening portion 351, and in other words, pushing and pressing part 52 is located at the interior of shell 102 Portion, pressing ontology 51 are located at the outside of shell 102.In order to avoid locking structure 50 is detached from from opening portion 351, opening portion 351 With the first width W1, the pressing ontology 51 of locking structure 50 has the second width W2, and pushing and pressing part 52 has third width W3, the One width W1 is more than or equal to the second width W2, and the first width W1 is less than third width W3.

With continued reference to Fig. 5 A and Fig. 5 B, locking structure 50 passes through on the third surface 34 of elastic component 60 and case top lid 30 Stopper section 37 is connected with each other.Elastic component 60 is, for example, spring, and the opposite both ends of spring are sheathed on the first protrusion 372 and second respectively On protrusion 53, the second protrusion 53 is set to the intermediate region of the second side of pushing and pressing part 52, preferably, the first protrusion 372 and Spring between two protrusions 53 is in compressive state, and spring is compressed its both ends difference resilient abutment pushing and pressing part 52 and baffle 371, To prevent spring from loosening from the first protrusion 372 and the second protrusion 53.Certainly, it is spring that the present invention, which does not limit elastic component 60, In other embodiments of the present invention, elastic component 60 can also be Z-shaped elastic slice, at this point, the opposite both ends difference of Z-shaped elastic slice It is fixedly connected with the first protrusion 372 and the second protrusion 53, alternatively, the opposite both ends of Z-shaped elastic slice are respectively fixedly connected with baffle 37 With pushing and pressing part 52, that is, in embodiment of the elastic piece structure as elastic component 60, the first protrusion 372 and the second protrusion 53 are not must The design structure of palpus.Wherein, elastic component 60 is mainly used for providing elastic force, under the action of elastic force, may make sliding block 54 certainly It is dynamic to reset, improve the convenience and stability of switch cap 101 and 102 assembly and disassembly of shell.

As shown in Figure 5 B, locking structure 50 is bound in case top lid 30, and sliding block 54 is protruded from through-hole 36；Work as shell 102 with switch cap 101 when being combined, and the sliding block 54 protruded from through-hole 36 can enter in position limiting structure 23 in sliding slot 233, and then limit Switch cap 101 is relative to shell 102 in rotating in horizontal direction.

It can be seen from the above, provided by the present invention for being selected between the switch cap 101 and shell 102 of realization puncture outfit 100 Property connect closedown structure substantially comprise at least one first snap-in structure 22, an at least position limiting structure 23, at least one second card Close structure 32 and an at least locking structure 50, at least one first snap-in structure 22 is set on switch cap 101 and from switch cap 101 extend towards shell 102；At least one second snap-in structure 32 is set in shell 102, and at least one second snap-in structure 32 It is corresponded at least one first snap-in structure 22；At least a locking structure 50 is incorporated into shell 102, at least a locking structure 50 correspond with an at least position limiting structure 23；Every one first snap-in structure 22 includes the first cantilever 221 and the second cantilever 222； Each position limiting structure 23 includes sliding slot 233；Every one second snap-in structure includes third cantilever 321；Each locking structure 50 includes Sliding block 54；It is in the lock state in closedown structure, sliding block 54 is caught in sliding slot 233, and the first cantilever 221 and the second cantilever 222 Backstop third cantilever 321；Non-locking state is in closedown structure, the sliding slot of the sliding block 54 of locking structure 50 from position limiting structure 23 It is skidded off in 233, the first cantilever 221 and the second cantilever 222 are separated from each other with third cantilever 321.

Fig. 6 A to Fig. 6 E is the assembling schematic diagram of the switch cap lower cover 20 and case top lid 30 in Figure 1B；Fig. 7 is in Fig. 6 C The enlarged diagram of region A；Fig. 8 is the enlarged diagram of region B in Fig. 6 E.It should be noted that as shown in Figure 1A, switch cap Upper cover 10 and 20 pre-assembly of switch cap lower cover are switch cap 101, and case top lid 30 and 40 pre-assembly of shell lower cover are shell 102, above-mentioned switch cap 101 is selectively connected with shell 102 by closedown structure.Due to closedown structure mainly with turn Cap lower cover 20 and case top lid 30 is changed to combine, thus in order to clearer signal switch cap 101 and shell 102 be fixedly connected and Switch cap upper cover 10 and shell lower cover 40 is omitted in disassembly process.

In general, switch cap upper cover 10 and 20 pre-assembly of switch cap lower cover form switch cap 101, case top lid 30 with 40 pre-assembly of shell lower cover forms shell 102, and shell 102 is fixedly connected in advance with casing (not shown).Wherein, switch cap 101 with shell 102 be fixedly connected be puncture outfit 100 casing be pierced into abdominal cavity of patients before carry out, in other words, switch cap 101 have completed with being fixedly connected on before puncture outfit 100 dispatches from the factory for shell 102, and in the course of surgery, switch cap 101 and shell Body 102 maintains the state being fixedly connected；Only when needing to take out lesion tissue, disassembly switch cap 101 is with shell 102 and convenient for disease The taking-up of stove tissue, and in view of casing still resides on abdominal cavity of patients at this time, based on the purpose for mitigating patient's discomfort, maintain Shell 102 and casing are fixed, and application active force is separated from each other sliding block 54 with position limiting structure 23 in locking structure 50 first It is limited with releasing switch cap 101 and the rotation in the horizontal direction of shell 102；Turn then along the central axis rotation of switch cap 101 Changing cap 101 is separated from each other the first snap-in structure 22 and the second snap-in structure 32 to release switch cap 101 and 102 Vertical Square of shell To limitation so that switch cap 101 is separated from each other with shell 102.Suffer from but it should be recognized that being pierced into puncture outfit 100 Before person abdominal cavity, apply active force after locking structure 50, being fixedly connected between switch cap 101 and shell 102 or Disassembly, can rotate respectively switch cap 101 and/or shell 102 along the central axis of switch cap 101 and/or the central axis of shell 102 It realizes.

Between switch cap 101 in the present invention and shell 102 being selectively connected mainly by closedown structure realize, At least one first snap-in structure 22 of closedown structure and at least a position limiting structure 23 is set on switch cap lower cover 20, closedown structure At least one second snap-in structure 20 and at least a locking structure 50 is set in case top lid 30, will focus on explanation first below Fit system between snap-in structure 22, position limiting structure 23, the second snap-in structure 20 and locking structure 50, elaborates switch cap Being selectively connected between 101 and shell 102.

As shown in Figure 1A and Fig. 6 A, when assembling switch cap 101 to shell 102, firstly, locking structure 50 is bound to shell In 102, operator holds shell 102, applies active force on pressing ontology 51 along direction shown in arrow F1, presses ontology 51 in opening portion 315 towards the medial movement of side wall 35, pushing and pressing part 52 squeezes elastic component 60, and elastic component 60 is compressed so that Sliding block 54 moves in the through-hole 36 of case top lid 30 towards the central axis of case top lid 30 along direction shown in arrow F1；Its In, the elastic component 60 being set between pushing and pressing part 52 and baffle 371 is compressed into compressive state 60 '.Locking structure in the present invention 50 under external force along linear movement, and locking structure 50 may be regarded as carrying out linear type movement；And existing block ring is outside Around the central axis rotation of shell under power effect, block ring may be regarded as carrying out shaped form movement, compared to the shifting of above-mentioned shaped form Dynamic, the linear movement of locking structure 50 of the present invention is more stable, and is not easy the problem of motion track offset occur.

As shown in Fig. 6 B and 6C, when assembling switch cap lower cover 20 to case top lid 30, pressing ontology 51 is maintained to be in Fig. 6 A In state, and make switch cap lower cover 20 and 30 mutual dislocation of case top lid, assemble the first surface 21 of switch cap lower cover 20 On every one first snap-in structure 22 into the corresponding accommodation groove 33 of case top lid 30, at this point, being located at switch cap lower cover 20 54 mutual dislocation of sliding block of position limiting structure 23 and locking structure 50 on first surface 21, in other words, sliding block 54 is not tied with limit Structure 23 is mutually aligned.

With continued reference to Fig. 6 D and Fig. 6 E, turn shown in central axis rotation Fig. 6 C around switch cap 101 along a first direction Cap lower cover 20 is changed, so that the first snap-in structure 22 continues to move to along a first direction in accommodation groove 33, the second snap-in structure 32 Into in the first engaging space of the first snap-in structure 22, preferably, between the first snap-in structure 22 and the second snap-in structure 32 Interference fit；Wherein, the first inclined-plane 223 and the second mutually guiding of inclined-plane 322, can smoothly enter into first convenient for the second snap-in structure 32 Engage space.After the first snap-in structure 22 and the second snap-in structure 32 be combined with each other, position limiting structure 23 is rotated into and sliding block The position of 54 alignment, position limiting structure 23 enter in through-hole 36, remove the active force being applied on pressing ontology 51, elastic component 60 is certainly Compressive state 60 ' is restored to original state and generates elastic force, and elastic force acts on pushing and pressing part 52 and baffle 371 simultaneously, due to Baffle 371 is set on third surface 34 and can not move, and pushing and pressing part 52 is pushed under the action of elastic force towards side wall 35 Direction it is mobile, and sliding block 54 is moved along direction contrary shown in arrow F1 in Fig. 6 A, sliding block 54 slides into limit In the sliding slot 233 of structure 23, sliding block 54 stays in sliding slot 233 (as shown in Figure 8), and pushing and pressing part 52 is against side wall 35, due to pushing away The third width W3 of support 52 is greater than the first width W1 of opening portion 351, and pushing and pressing part 52 supports side wall under the action of elastic force 35 inside, sliding block 54 are incorporated in sliding slot 233, can be by the first locating convex block 231 of 233 two sides of sliding slot and the second positioning Convex block 232 limits sliding block 54, and then limits switch cap lower cover 20 relative to case top lid 30 in the rotation in horizontal direction.Further Ground, after being combined due to the first snap-in structure 22 with the second snap-in structure 32, the first cantilever 221 and the second limitation jointly of cantilever 222 Third cantilever 321, that is, by the first snap-in structure 22 and the second snap-in structure 32 to limit switch cap lower cover 20 and case top lid In the displacement of vertical direction after 30 combinations.Switch cap lower cover 20 and case top lid 30 are completed to assemble, sliding block 54 and position limiting structure 23 Cooperation and the first snap-in structure 22 cooperate with corresponding second snap-in structure 32, so that closedown structure is in the lock state.

In dismantling switch cap 101 from shell 102, disassembly process can refer to process contrary to the above and be operated.Tool For body, by taking the structure in Fig. 6 D or Fig. 6 E as an example, the pressing ontology 51 of locking structure 50 is pressed, so that pressing ontology 51 from side The opening portion 351 of wall 35 is towards the medial movement of side wall 35, and the extruding of pushing and pressing part 52 elastic component 60, elastic component 60 is compressed, from just Beginning state is compressed into compressive state 60 ', and pushing and pressing part 52 is mobile towards stopper section 37 and skids off with movable slider 54 from sliding slot 233 And it is mobile towards stopper section 37, after sliding block 54 skids off sliding slot 233, i.e. limitation of the position limiting structure 23 to the horizontal direction of sliding block 54 After elimination, along second direction around the center axis rotation switch cap lower cover 20 of switch cap 101 (as shown in Figure 1A), so that the first card It closes structure 22 and the second snap-in structure 32 is separated from each other (as shown in Figure 6 C), wherein first direction is opposite with second direction.First After snap-in structure 22 is separated with the second snap-in structure 32, i.e. the first clamping mechanism 22 is to the vertical direction of the second snap-in structure 32 Limitation is eliminated, so that switch cap lower cover 20 can be separated from each other with case top lid 30.Switch cap lower cover 20 and case top lid 30 Disassembly is completed, sliding block 54 is skidded off from position limiting structure 23 and the first snap-in structure 22 is mutual with corresponding second snap-in structure 32 Separation, so that closedown structure is in non-locking state.

Due to being selectively connected between switch cap 101 and shell 102, in surgical procedure or perform the operation At by dismantling switch cap 101, doctor takes out from the proximal end (proximal end is defined as side of the casing close to doctor) of puncture outfit and cut When the foreign matters such as the lesion tissue removed, the foreign matters such as removed lesion tissue only need to by the second gasket, do not need by first Gasket can be removed, and be more convenient the taking-up of tissue samples, and reduce damage of tissue samples during taking-up.

In conjunction with Figure 1A and above-mentioned assembling process and disassembly process it is found that along a first direction for example counterclockwise around turn The central axis rotation switch cap lower cover 20 (either switch cap 101) of cap 101 is changed, it can be achieved that switch cap lower cover 20 (or switch cap 101) the first snap-in structure 22 and the second snap-in structure 32 of case top lid 30 (or shell 102) are mutually clamped；And along Second direction for example rotationally clockwise switch cap lower cover 20 (either switch cap 101), it can be achieved that switch cap lower cover 20 (or Switch cap 101) the first snap-in structure 22 and second snap-in structure 32 of case top lid 30 (or shell 102) disassembly, but It is not limited.In other embodiments of the invention, first direction for example can be clockwise, and second direction for example may be used To be counterclockwise.In 30 assembly and disassembly process of switch cap lower cover 20 and case top lid, above-mentioned first direction and second party The of at least one first snap-in structure 22 on the first surface 21 for generally depending on switch cap lower cover 20 and case top lid 30 The relative positional relationship of at least one second snap-in structure 32 on two surfaces 31, wherein second when the first snap-in structure 22 is outstanding Arm 222 counterclockwise extends along annulus shape surface (first surface 21), and the third cantilever 321 of the second snap-in structure 32 When extending clockwise along annulus shape surface (second surface), rotates counterclockwise conversion cap lower cover 20 and make under switch cap Lid 20 is assembled in case top lid 30, rotates clockwise switch cap lower cover 20 and switch cap lower cover 20 is torn open with case top lid 30 It unloads；And the second cantilever 222 for working as the first snap-in structure 22 extends clockwise along annulus shape surface (first surface 21), And second snap-in structure 32 third cantilever 321 along annulus shape surface (second surface) counterclockwise extend when, up time Needle rotation switch cap lower cover 20 is assembled to switch cap lower cover 20 in case top lid 30, and rotating counterclockwise conversion cap lower cover 20 makes It obtains switch cap lower cover 20 and case top lid 30 is dismantled.Explanation is made, switch cap lower cover 20 is rotated relative to case top lid 30 In the process, the pressing ontology 51 of locking structure 50 is in pressing state always, that is, sliding block 54 is not placed in sliding slot 233.

In one embodiment of the invention, preferably, at least one first snap-in structure 22 is integrally formed with switch cap lower cover 20, until Few one second snap-in structure 32 is integrally formed with case top lid 30, can be formed by way of injection molding.

To sum up, the present invention provides closedown structure and the puncture outfit using it, when closedown structure is in the lock state, the first card It closes structure to be mutually clamped with the second snap-in structure, the sliding block of locking structure is accommodated in the sliding slot of position limiting structure, so that switch cap It is fixedly connected with the casing；When closedown structure is in non-locking state, the first snap-in structure is separated from each other with the second snap-in structure, The sliding block of locking structure skids off in the sliding slot of position limiting structure, so that switch cap is removed from shell.Compared with prior art, originally The closedown structure difference of invention and the design of existing wall extension and block ring, and the locking structure in closedown structure is being moved through Journey improves mobile stability along linear movement, avoids the occurrence of the choosing of switch cap and shell caused by the offset of locking structure It connects to selecting property and abnormal problem occurs.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (18)

1. a kind of closedown structure, is selectively connected for the first component and second component, which is characterized in that the closedown structure packet It includes:

At least one first snap-in structure, is set on the first component, and every one first snap-in structure includes the first cantilever and the Two cantilevers, first cantilever and second cantilever court extend downwardly；

An at least position limiting structure is set on the first component, and is extended downwardly from first component court, each position limiting structure With sliding slot；

At least one second snap-in structure, is set to the second component, at least one second snap-in structure and this at least one first Snap-in structure corresponds, and every one second snap-in structure includes third cantilever；And

An at least locking structure, part are incorporated into the second component, an at least locking structure and an at least position limiting structure one One is corresponding, and each locking structure has sliding block；

When the closedown structure is in the lock state, which is accommodated in the sliding slot, first cantilever and the second cantilever backstop The third cantilever；When the closedown structure is in non-locking state, which removes from the sliding slot, first cantilever and this second Cantilever is separated from each other with the third cantilever.

2. closedown structure as described in claim 1, which is characterized in that the first component has first surface, first engaging Structure setting on the first surface and towards extending downwardly, the both ends of first cantilever be separately connected the first surface and this second Cantilever, the extending direction of first cantilever intersect with the extending direction of second cantilever, and the connection is including being fixedly connected and integrally Molding.

3. such as claim 1,2 described in any item closedown structures, which is characterized in that first cantilever and second cantilever are mutual It is vertically formed L-type hook.

4. closedown structure as claimed in claim 2, which is characterized in that at least a position limiting structure is disposed on the first surface simultaneously Towards extending downwardly, each position limiting structure includes being arranged in parallel and at interval the first locating convex block and the second locating convex block, the sliding slot Between first locating convex block and second locating convex block.

5. closedown structure as described in claim 1, which is characterized in that at least an accommodation groove is set in the second component, should An at least accommodation groove and at least one first snap-in structure correspond, and each third cantilever is set in each accommodation groove, and At least one wall of the third cantilever is incorporated on the cell wall of corresponding accommodation groove.

6. closedown structure as described in claim 1, which is characterized in that the first component is switch cap, which includes turning Change cap upper cover and switch cap lower cover；The second component is shell, which includes case top lid and shell lower cover, the case top lid Between the switch cap lower cover and the shell lower cover, which includes opposite second surface and third surface, this Two surfaces are adjacent with the switch cap, and an at least locking structure is incorporated on the third surface.

7. such as claim 1,6 described in any item closedown structures, which is characterized in that each locking structure further includes pressing ontology And pushing and pressing part, the pressing ontology and the sliding block are respectively arranged at the opposite first side and second side of the pushing and pressing part, pressing The pressing ontology removes the sliding block from the sliding slot.

8. closedown structure as claimed in claim 7, which is characterized in that the pressing ontology has top surface, which protrudes out this Top surface.

9. closedown structure as described in claim 1, which is characterized in that the second component includes side wall, the side wall ring around this Second surface and third surface that two components have, opposite, and the side wall convexedly stretches on the third surface, which has extremely A few opening portion, an at least opening portion and an at least locking structure correspond；Each locking structure further includes pressing this Body and pushing and pressing part, the pushing and pressing part and the sliding block are located at the inside of the side wall, and the self-corresponding opening portion of the pressing ontology is exposed and position In the outside of the side wall.

10. closedown structure as claimed in claim 9, which is characterized in that each locking structure further includes a stopper section, at least one Stopper section and an at least locking structure correspond, and each stopper section includes baffle, and the baffle is from the third surface under Extend.

11. closedown structure as claimed in claim 10, which is characterized in that each locking structure further includes elastic component, the elasticity The both ends of part abut the baffle and the pushing and pressing part respectively.

12. closedown structure as claimed in claim 10, which is characterized in that the first protrusion is arranged on the baffle, which sets The second protrusion is set, second protrusion is opposite with first protrusion, and the opposite end of the elastic component is sheathed on first protrusion respectively On second protrusion.

13. closedown structure as claimed in claim 10, which is characterized in that a through-hole is set in the second component, the through-hole Between the opening portion and the baffle, which can be located in the through-hole.

14. such as claim 11,12 described in any item closedown structures, which is characterized in that the elastic component is spring or Z-shaped bullet Piece.

15. closedown structure as described in claim 1, which is characterized in that, should when the first component is located above the second component The first component is rotated in the counterclockwise direction to realize that at least one second snap-in structure engages at least one first snap-in structure with this, Alternatively, the first component is rotated in a clockwise direction to realize that at least one first snap-in structure at least 1 second engages knot with this Structure engaging.

16. a kind of puncture outfit, including switch cap, shell and closedown structure, which is characterized in that the closedown structure is claim 1- Closedown structure described in any one of 15, the first component are switch caps, which is shell, which makes The switch cap is selectively connected with the shell.

17. puncture outfit as claimed in claim 16, which is characterized in that the switch cap includes switch cap lower cover, which includes Case top lid, the first component are switch cap lower covers, which is case top lid, which makes under the switch cap Lid is selectively connected with the case top lid.

18. a kind of puncture outfit, shank, switch cap and closedown structure including puncturing core, which is characterized in that the closedown structure is power Benefit requires closedown structure described in any one of 1-15, which is the shank for puncturing core, which is conversion Cap.