CN108125705B

CN108125705B - Foreskin cutting anastomat with safety mechanism

Info

Publication number: CN108125705B
Application number: CN201711171581.5A
Authority: CN
Inventors: 陈小菊; 王于峰; 庞智林; 赵斌; 葛妮娜; 束秋红
Original assignee: CHANGZHOU CONDINER MEDICAL TECHNOLOGY CO LTD
Current assignee: CHANGZHOU CONDINER MEDICAL TECHNOLOGY CO LTD
Priority date: 2017-11-22
Filing date: 2017-11-22
Publication date: 2023-08-04
Anticipated expiration: 2037-11-22
Also published as: CN108125705A

Abstract

The utility model discloses a prepuce cutting anastomat with a safety mechanism, and relates to the technical field of medical appliances. The utility model comprises a shell, a concave seat component, a pushing seat, a firing mechanism, a knob and a safety mechanism, wherein the safety mechanism comprises a clamping block and a clamping pin, the clamping block is provided with a safety part which is matched with the pushing block and prevents the pushing block from moving forwards, and the clamping block has two positions: one is the safety position where the safety part is matched with the push block, and the other is the unlocking position where the safety part is separated from the push block; the bayonet has two states switched by knob rotation: one is to control the clamping block to be in an un-triggered state of the safety position, and the other is to enable the clamping block to be in a triggered state of the unlocking position. The knob provided by the utility model has the advantages that the function of triggering the safety mechanism is endowed on the basis of the original action function, the design is very ingenious, the operation mode of switching the safety of the clamping block and unlocking by rotating the knob is very convenient, the requirement is met, the clamping block is not required to be abandoned after being unlocked, the resources are not wasted, and the market value is higher.

Description

Foreskin cutting anastomat with safety mechanism

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a prepuce cutting anastomat with a safety mechanism.

Background

In order to prevent the mistaken firing of the handle, the prior foreskin cutting anastomat usually adopts a safety clamp to lock the position of the handle.

For example, patent application number CN201620269251.4, publication date of the patent is 2016, 4, 1, and patent name is: the utility model provides a foreskin cutting anastomat is with insurance knot, this application include the circular arc board, locate the loading and unloading piece of turning up of circular arc board both ends, locate the inboard knot piece of circular arc board, the circular arc board is the two-thirds circular arc plate body of parcel in the outer tube outside, detain the piece and be semi-cylindrical, detain the piece card and locate in the motion inslot, circular arc board, loading and unloading piece and detain the piece and be integrated into one piece structure.

For another patent with patent application number CN201420558289.4, the date of the grant notice is 2015, 2, 4, and the patent name is: disposable foreskin cutting anastomat. This application includes spill seat, nail storehouse cover, sleeve pipe, lead screw, push away nail piece, movable handle and connecting rod, the intraductal lead screw that is equipped with of cover, the sleeve pipe left side is equipped with nail storehouse cover, be equipped with in the nail storehouse cover and push away nail piece and spill seat, movable handle installs on the sleeve pipe, connecting rod coupling sleeve pipe and movable handle, be equipped with the insurance clamp on the sleeve pipe, the cross-sectional shape of insurance clamp is "H" shape, insurance clamp top is equipped with the antislip strip, insurance clamp below is equipped with the clamp piece.

The prior double-handle type foreskin cutting anastomat adopts the mode of the above-mentioned exemplified safety clamp to achieve the safety effect, and the safety clamp needs to be removed from the anastomat and abandoned in an operating room when in use, thereby causing the waste of resources, polluting the environment of the operating room, and the clamp is inconvenient to take out due to the troublesome action of the safety clamp and inconvenient use.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects of the safety clip of the existing foreskin cutting anastomat and provides the foreskin cutting anastomat with the safety mechanism. By adopting the technical scheme of the utility model, the knob is an essential acting piece of the anastomat, the function of triggering the safety mechanism is endowed on the basis of the original action function, the design is very ingenious, the operation mode of switching the safety and unlocking of the clamping block by rotating the knob is very convenient, the use requirement of doctors is met, the clamping block is not needed to be abandoned after being unlocked, the resource is not wasted, and the utility model has higher market value.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model relates to a foreskin cutting anastomat with a safety mechanism, which comprises a shell, a concave seat component, a pushing seat, a firing mechanism and a knob, wherein the pushing seat is arranged in the shell, a nail bin is arranged at the outer side of the pushing seat, the rod part of the concave seat component passes through the pushing seat and the shell and is in threaded connection with the knob, the firing mechanism comprises a pushing block which is slidably arranged on the shell and a handle which drives the pushing block to move along the axial direction of the shell, the handle is hinged on the shell, the pushing block is connected with the pushing seat to drive the pushing seat to move forwards and execute the nail pushing and cutting actions, the foreskin cutting anastomat also comprises the safety mechanism which comprises a clamping block and a clamping pin,

the fixture block be equipped with one with the cooperation of ejector pad and prevent ejector pad forward movement's insurance portion, the fixture block have two kinds of positions: one is the safety position where the safety part is matched with the push block, and the other is the unlocking position where the safety part is separated from the push block;

the bayonet lock can locate on the shell with axial displacement, and the one end and the fixture block of bayonet lock are connected, and the other end is pressed close to the inboard terminal surface of knob, the bayonet lock have by the rotatory two kinds of states of switching of knob: one is to control the clamping block to be in an un-triggered state of the safety position, and the other is to enable the clamping block to be in a triggered state of the unlocking position.

Further, the clamping block switches the two positions in a sliding manner relative to the peripheral surface of the shell.

Furthermore, the clamping pin is clamped with the clamping block in the non-triggering state, and is separated from the clamping block in the triggering state.

Furthermore, one end of the clamping pin is provided with a bump, the clamping block is provided with a groove matched with the bump, and the front part of the groove is provided with an avoidance groove communicated with the groove so as to avoid the bump when the clamping block moves.

Further, a spring is arranged between the bayonet lock and the shell to force the convex block of the bayonet lock to block the groove backwards.

Furthermore, the tail end of the avoidance groove is provided with a limit groove which is recessed forwards and can be used for the bump to enter, so that the clamping block is stably positioned at the unlocking position.

Furthermore, the handle is hinged on a connecting seat arranged on the shell, and two sides of the safety part are respectively propped against the connecting seat and the pushing block.

Furthermore, the clamping block is provided with a poking part which is tilted upwards.

Further, the safety mechanism further comprises a cover cap for covering the bayonet lock block and the bayonet lock.

Furthermore, the bayonet lock is provided with a first indicating strip, the cover is provided with a first corresponding perspective window, the rod part of the concave seat component is provided with a second indicating strip, and the shell is provided with a second corresponding perspective window.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following remarkable effects:

(1) According to the foreskin cutting anastomat with the safety mechanism, the knob is adopted to switch the safety and the unlocking of the clamping block, the knob is an essential acting piece of the anastomat, the function of triggering the safety mechanism is endowed on the basis of the original action function, the design is very ingenious, the operation mode of switching the safety and the unlocking of the clamping block by rotating the knob is very convenient, the use requirement of doctors is met, and the foreskin cutting anastomat with the safety mechanism has higher market value.

(2) According to the foreskin cutting anastomat with the safety mechanism, the safety part which is matched with the push block and prevents the push block from moving forwards is arranged on the clamping block, the safety position and the unlocking position of the clamping block are switched in a sliding mode relative to the peripheral surface of the shell, the safety is reliable, and the unlocking is convenient; the fixture block does not need to be abandoned after unlocking, so that resources are not wasted, and the surgical environment is not polluted.

(3) According to the foreskin cutting anastomat with the safety mechanism, one end of the clamping pin is provided with the convex block, the clamping block is provided with the groove matched with the convex block, the front part of the groove is provided with the avoidance groove communicated with the groove so as to avoid the convex block when the clamping block moves, the convex block of the clamping pin is clamped with the groove of the clamping block in the non-triggering state, and is separated from the clamping relationship with the groove in the triggering state and enters the avoidance groove so as to enable the clamping block to slide relative to the peripheral surface of the shell, so that the matching mode is simple and reliable, and the design is ingenious.

(4) According to the prepuce cutting anastomat with the safety mechanism, the tail end of the avoidance groove is provided with the limiting groove which is concave forwards and can be used for the protruding block to enter, when the clamping block slides to the final unlocking position, the protruding block of the clamping pin enters the limiting groove, and the clamping block is relatively fixed and is stably positioned at the unlocking position.

(5) According to the foreskin cutting anastomat with the safety mechanism, two sides of the safety part are respectively propped against the connecting seat and the pushing block, when the clamping block is positioned at the safety position, the safety part is clamped between the connecting seat and the pushing block, the pushing block cannot move forwards, and safety is reliable.

(6) According to the foreskin cutting anastomat with the safety mechanism, the clamping block is provided with the upward tilting poking part, and when the bayonet lock is in the triggering state, the clamping block is slid by the poking part, so that the foreskin cutting anastomat is unlocked, and poking action is more convenient.

(7) The foreskin cutting anastomat with the safety mechanism has the advantages that the spring is arranged between the clamping pin and the shell, the convex block of the clamping pin is forced to be always backwards clamped with the groove of the clamping block in the non-triggering state, and the safety is more reliable.

(8) The utility model relates to a foreskin cutting anastomat with a safety mechanism, wherein a first indicator strip is arranged on a clamping pin, a corresponding first perspective window is arranged on a cover, when the first indicator strip on the clamping pin enters the corresponding position of the first perspective window, the clamping pin is indicated to be in a triggering state, and an operator can toggle a clamping block to unlock; the second indicating strip is arranged on the rod part of the concave seat component, the corresponding second perspective window is arranged on the shell, when the second indicating strip enters the corresponding position of the second perspective window, the tissues are indicated to be extruded to the proper positions, and an operator can perform firing, cutting and suturing, so that a good cutting and suturing effect is ensured.

Drawings

FIG. 1 is a schematic view of a foreskin cutting stapler with a safety mechanism of the present utility model;

FIG. 2 is a schematic view of the hidden cover of the present utility model;

figure 3 is a cross-sectional view of a foreskin cutting stapler with a safety mechanism of the utility model;

FIG. 4 is a schematic view of a safety mechanism according to the present utility model;

FIG. 5 is a top view of the safety mechanism of the present utility model;

FIG. 6 is a schematic view of the structure of the sleeve of the present utility model;

FIG. 7 is a schematic view of a bayonet of the present utility model;

fig. 8 is a schematic structural diagram of a latch according to the present utility model.

Reference numerals in the schematic drawings illustrate:

1. a housing; 11. a staple cartridge sleeve; 111. a connecting seat; 12. a sleeve; 121. a safety seat; 1211. a first cavity; 1212. a second cavity; 1213. a chute; 122. perspective windows II; 2. a female seat assembly; 21. a concave seat; 22. a screw rod; 23. an outer tube; 221. an indication strip II; 3. a pushing seat; 4. a firing mechanism; 41. a handle; 42. a connecting rod; 43. a pushing block; 5. a knob; 6. a safety mechanism; 61. a clamping block; 611. a safety part; 612. a toggle part; 613. a groove; 614. an avoidance groove; 615. a limit groove; 62. a bayonet lock; 621. an indication bar I; 622. a step; 623. a bump; 63. a spring; 64. a cover cap; 641. perspective window one; 7. an elastic member; 8. an annular blade; 9. a staple cartridge; 91. and a protective sleeve.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.

Examples

Referring to fig. 1, 2 and 3, the foreskin cutting stapler with the safety mechanism of the present embodiment includes a housing 1, a concave seat assembly 2, a pushing seat 3, a firing mechanism 4 and a knob 5. The shell 1 comprises a nail bin sleeve 11 and a sleeve 12 connected with the nail bin sleeve 11, the pushing seat 3 is arranged in the nail bin sleeve 11 of the shell 1, the outside of the pushing seat 3 is provided with a nail bin 9, the nail bin 9 is arranged at the end part of the nail bin sleeve 11, and the nail bin 9 is provided with a protective sleeve 91. The pushing seat 3 is provided with an annular blade 8, the rod part of the concave seat component 2 penetrates through the pushing seat 3 and the shell 1 and is in threaded connection with the knob 5, the inner side of the knob 5 is provided with a conical surface matched with the sleeve 12, and coaxiality of the knob 5 and the shell 1 is improved. Of course, as in the conventional anastomat, the clamping grooves and clamping lines which are matched with each other are arranged between the rod part of the concave seat assembly 2 and the pushing seat 3 so as to ensure that the concave seat assembly 2 can slide along the axial direction of the pushing seat 3 and cannot rotate. Specifically, the concave seat assembly 2 comprises a concave seat 21, a screw rod 22 and an outer tube 23, the inner side surface of the concave seat 21 is provided with a nail abutting seat and a cutter abutting seat, the front end of the screw rod 22 is fixedly connected with the tail of the concave seat 21 through threads, the outer tube 23 is fixedly sleeved on the front part of the screw rod 22 and the concave seat 21, the screw rod 22 and the outer tube 23 are fixed, relative movement cannot occur among the concave seat 21, the screw rod 22 and the outer tube 23, and the outer tube 23 and the pushing seat 3 are provided with the mutually matched clamping grooves and clamping lines. The firing mechanism 4 comprises a push block 43 slidably arranged on the casing 1 and a handle 41 for driving the push block 43 to move along the axial direction of the casing 1, wherein the handle 41 is hinged on the casing 1, in particular, the handle 41 is hinged on a connecting seat 111 arranged on the cartridge sleeve 11, a connecting rod 42 is hinged between the handle 41 and the push block 43 (the action mode of driving the push block 43 by the handle 41 is various and is not limited to transmission through the connecting rod 42), an elastic piece 7 (the elastic piece 7 is usually a spring) is arranged between the connecting seat 111 and the push block 43, and the push block 43 is connected with the push seat 3 so as to drive the push seat 3 to move forwards and perform the pushing and cutting actions.

With reference to fig. 4 and 5, the foreskin cutting stapler of the present embodiment further comprises a safety mechanism 6, the safety mechanism 6 comprising a clamping block 61 and a clamping pin 62. The latch 61 is provided with a safety portion 611 (as shown in fig. 8) which cooperates with the push block 43 and prevents the push block 43 from moving forward, and the latch 61 has two positions: one is a safety position where the safety part 611 is matched with the push block 43, and the other is an unlocking position where the safety part 611 is separated from the push block 43; the bayonet lock 62 is axially movably disposed on the housing 1, and one end of the bayonet lock 62 is connected with the bayonet lock 61, and the other end is close to the inner end face of the knob 5, and the bayonet lock 62 has two states switched by rotation of the knob 5: one is an unactuated state that controls the latch 61 in the secured position, and the other is an actuated state that enables the latch 61 to be in the unlocked position. The latch 62 is engaged with the latch 61 in the non-triggered state, and is disengaged from the latch 61 in the triggered state.

The latch 61 of the present embodiment is switched between the two positions in a sliding manner relative to the peripheral surface of the housing 1, that is, the latch 61 is attached to the peripheral surface of the sleeve 12 and slides, and the sliding direction from the safety position to the unlocking position is preferably clockwise, so that the clockwise unlocking is more suitable for the use habit. Preferably, the clamping block 61 has an arc-shaped structure, and preferably 1/3 of the length of the sleeve 12 is selected. The fixture block 61 is provided with a poking part 612 which is tilted upwards, and the fixture block 61 is slid by the poking part 612 so as to switch the position, and poking action is more convenient.

Referring to fig. 7 and 8, one end of the latch 62 is provided with a bump 623, the latch 61 is provided with a groove 613 matching with the bump 623, the front portion of the groove 613 is provided with an escape groove 614 communicating with the groove 613 to escape the bump 623 when the latch 61 moves, the end of the escape groove 614 is provided with a limit groove 615 which is concave forward and can be used for the bump 623 to enter, preferably, the limit groove 615 adopts an arc notch matching with the head of the bump 623, when the latch 61 slides to the final unlocking position, the bump 623 of the latch 62 enters the limit groove 615, and the latch 61 is relatively fixed and is stably in the unlocking position. A spring 63 is provided between the bayonet 62 and the housing 1 to urge the projection 623 of the bayonet 62 rearwardly to engage the recess 613.

Specifically, as shown in fig. 6, the sleeve 12 of the present embodiment is provided with a safety seat 121, the safety seat 121 is provided with a sliding groove 1213 for allowing the clamping block 61 to slide circumferentially, the clamping pin 62 is slidably disposed on the safety seat 121, and the safety seat 121 is provided with a first cavity 1211 and a second cavity 1212 along the axial direction of the clamping pin 62. Referring to fig. 5 and 7 again, the detent 62 has a step 622, the step 622 is located in the first cavity 1211 and abuts against the rear end of the first cavity 1211, and the spring 63 is located between the front end of the first cavity 1211 and the step 622, so as to press the step 622 to the rear end of the first cavity 1211, as shown in fig. 5. The first indicator strip 621 is disposed on the bayonet 62 in this embodiment, the first transparent window 641 is disposed on the cover 64, and when the first indicator strip 621 on the bayonet 62 enters the corresponding position of the first transparent window 641, it indicates that the bayonet 62 is in a triggered state, and an operator can toggle the latch 61 to unlock.

The two sides of the safety portion 611 of the clamping block 61 of the embodiment respectively abut against the connecting seat 111 and the pushing block 43, when the clamping block 61 is at the safety position, the safety portion 611 is clamped between the connecting seat 111 and the pushing block 43, the pushing block 43 cannot move forward, and safety is reliable. Of course, the safety portion 611 limits the forward movement of the push block 43 in various manners, for example, the safety portion 611 adopts a pin, a jack is correspondingly disposed on the slider 43, and safety and unlocking of the clamping block can be achieved through cooperation of the pin and the jack. The preferred mode is selected here and is not limiting.

As shown in fig. 1, the safety mechanism 6 of the present embodiment further includes a cover 64 for covering the latch block 61 and the latch 62, and protects the block 61, the latch 62, and the like.

As shown in fig. 3, the rod portion of the concave seat assembly 2 of the present embodiment is provided with a second indicator strip 221, the housing 1 is provided with a second corresponding perspective window 122, when the second indicator strip 221 enters the corresponding position of the second perspective window 122, it indicates that the tissue has been extruded to a suitable position, and an operator can perform firing, cutting and suturing, so that a good cutting and suturing effect is ensured.

It should be noted that, in the present embodiment, after the latch 62 is in the triggered state, only the protrusion 623 of the latch 62 loses the restriction on the groove 613 of the latch 61, the latch 61 is still in the safe position, and the latch 61 still needs to be moved to be switched to the unlocked position. Of course, alternatively, an oblique guide groove may be provided on the latch 61, and when the latch 62 moves forward, the latch 61 automatically slides to the unlocking position. However, the manner of manually pulling the latch 61 to switch to the unlocking position is safer than the manner of automatically switching as described above, and the operator pulls the latch 61 again after confirming that there is no error, so that the safety factor is higher.

For a better understanding of the foreskin cutting stapler of this embodiment, the use of this embodiment will now be briefly described with reference to fig. 1-8. The protective sleeve 91 is taken out, the concave seat 21 is sleeved on the glans, the foreskin is turned outwards to the outside of the concave seat 1, the knob 5 is rotated clockwise, the distance between the concave seat 21 and the nail cabin 9 is reduced, the foreskin tissue is clamped gradually, the knob 5 is rotated continuously, the resistance of the spring 63 is overcome by the knob 5, the bayonet 62 is pushed forwards to a triggering state by the inner side end face of the knob 5, the convex block 623 of the bayonet 62 leaves the groove 613 and enters the avoidance groove 614, the first indicator strip 621 on the bayonet 62 enters the corresponding position of the see-through window 641 of the cover 64, the clamping block 61 is shifted clockwise to be in the unlocking position, the tail end of the avoidance groove 614 contacts the convex block 623, the knob 5 is rotated continuously, the convex block 623 of the bayonet 62 is inserted forwards into the limit groove 615, the clamping block 61 is stably in the unlocking position, at this time, the inner side end face of the knob 5 is attached to the end face of the sleeve 12, the knob 5 is rotated continuously, the distance between the concave seat 21 and the nail cabin 9 is reduced continuously, when the second indicator strip 221 of the rod part of the bayonet component 2 enters the corresponding position of the see-through window 122, the foreskin tissue is indicated to be extruded to a proper position, and the foreskin tissue can be pushed forward by the handle 4 to drive the push the nail 3 and cut forward.

The foreskin cutting anastomat with the safety mechanism has the advantages that the knob is an essential operating member of the anastomat, the function of triggering the safety mechanism is endowed on the basis of the original action function, the design is very ingenious, the operation mode of switching the safety and unlocking of the clamping block by rotating the knob is very convenient, the foreskin cutting anastomat with the safety mechanism meets the use requirements of doctors, the clamping block does not need to be abandoned after being unlocked, the resources are not wasted, and the foreskin cutting anastomat with the safety mechanism has higher market value.

The utility model and its embodiments have been described above schematically, without limitation, and the actual construction is not limited to this, as it is shown in the drawings, which are only one of the embodiments of the utility model. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively devised without departing from the gist of the present utility model, and all the structural manners and the embodiments belong to the protection scope of the present utility model.

Claims

1. The utility model provides a foreskin cutting anastomat with safety mechanism, includes shell (1), concave seat subassembly (2), promotes seat (3), firing mechanism (4) and knob (5), the inside of shell (1) is located to promotion seat (3), and the outside of promoting seat (3) is equipped with nail storehouse (9), the pole portion of concave seat subassembly (2) pass and promote seat (3) and shell (1) to with knob (5) threaded connection, firing mechanism (4) including slidable locate ejector pad (43) on shell (1) and drive ejector pad (43) along axial displacement's of shell (1) handle (41), handle (41) articulated on shell (1), ejector pad (43) be connected with promotion seat (3) to drive promotion seat (3) forward motion and carry out ejector pin and cutting action, its characterized in that: the safety mechanism (6) is also included, the safety mechanism (6) comprises a clamping block (61) and a clamping pin (62),

the clamping block (61) is provided with a safety part (611) which is matched with the pushing block (43) and prevents the pushing block (43) from moving forwards, and the clamping block (61) has two positions: one is a safety position where the safety part (611) is matched with the push block (43), and the other is an unlocking position where the safety part (611) is separated from the push block (43);

the bayonet lock (62) can locate on shell (1) with axial displacement, and the one end and the fixture block (61) of bayonet lock (62) are connected, and the other end is pressed close to the inboard terminal surface to knob (5), bayonet lock (62) have by two kinds of states of knob (5) rotation switching: one is an unactuated state that controls the latch (61) in the secured position, and the other is an actuated state that enables the latch (61) in the unlocked position;

the clamping pin (62) is clamped with the clamping block (61) in the non-triggering state, and is separated from the clamping block (61) in the triggering state; one end of the clamping pin (62) is provided with a bump (623), the clamping block (61) is provided with a groove (613) matched with the bump (623), and the front part of the groove (613) is provided with an avoidance groove (614) communicated with the groove (613) so as to avoid the bump (623) when the clamping block (61) moves; the clamping block (61) is provided with an upward tilting poking part (612).

2. The circumcision stapler with safety mechanism as claimed in claim 1, wherein: the clamping block (61) switches the two positions in a sliding manner relative to the peripheral surface of the shell (1).

3. The circumcision stapler with safety mechanism as claimed in claim 1, wherein: a spring (63) is arranged between the clamping pin (62) and the shell (1) so as to force a convex block (623) of the clamping pin (62) to clamp the groove (613) backwards.

4. A foreskin cutting stapler with safety mechanism according to claim 3, characterized in that: the tail end of the avoidance groove (614) is provided with a limit groove (615) which is recessed forwards and can be used for the bump (623) to enter, so that the clamping block (61) is stably positioned at the unlocking position.

5. The circumcision stapler with safety mechanism as claimed in claim 4, wherein: the handle (41) is hinged on a connecting seat (111) arranged on the shell (1), and two sides of the safety part (611) are respectively propped against the connecting seat (111) and the pushing block (43).

6. A foreskin cutting stapler with safety mechanism according to claim 1 or 2, characterized in that: the safety mechanism (6) also comprises a cover (64) which covers the clamping pin clamping block (61) and the clamping pin (62).

7. The circumcision stapler with safety mechanism as claimed in claim 6, wherein: the bayonet lock (62) on be equipped with instruction strip one (621), shroud (64) on be equipped with corresponding perspective window one (641), the pole portion of spill seat subassembly (2) on be equipped with instruction strip two (221), shell (1) on be equipped with corresponding perspective window two (122).