CN201098164Y - In-place safety opening device for medical anastomat - Google Patents

Abstract

A medical anastomat in-place safety opening device comprises a shell, a top shaft, a handle and a shifting seat; the apical axis is by the front axle, the axis, the rear shaft is connected and is formed, there is the step on the rear shaft, the lead screw, adjusting nut, above-mentioned handle is connected with the safety block, the lower extreme of safety block inserts in the casing, just be equipped with the removal cover at the step rear portion of rear shaft in the casing, be equipped with the spring between adjusting nut and removal cover, a strip shaped switch plate rear end is fixed on removing the cover, be equipped with a strip hole on the switch plate, be equipped with catapult form retaining member between the both sides inner wall that corresponds switch plate strip hole on the casing, the strip hole of switch plate can be passed on the upper portion of retaining member, its side supports on strip hole inner wall before, the lower extreme leading flank of safety block supports on the. The utility model discloses automatic opening the safety block when reacing the identical distance of regulation, can not cause the mistake percussion, the position of kissing is accurate moreover, no longer needs the fine setting, and is easy and simple to handle. The utility model discloses window shows and the linkage of safety block, makes the operation safe and reliable of anastomat.

Description

Safety opening device for medical stapler in place

technical field

The utility model relates to a medical instrument, which is a safety opening device for a disposable medical stapler in place.

Background technique

The medical stapler in this article is a disposable medical stapler suitable for end-to-end or end-to-side anastomosis of the human esophagus and gastrointestinal tract. The stapler includes a shell, a top shaft, a handle, a toggle seat and the like. The rear part of the jacking shaft is a screw mandrel, which is connected with an adjusting nut. When in use, the top shaft is inserted into the anvil seat, and the adjusting nut is rotated, the top shaft moves backward to drive the anti-nail seat to move backward. When the anvil seat and the ring knife reach the specified matching distance, that is, when the stapler is in the anastomosis state, pull Move the handle to make the ring knife cut excess tissue, and at the same time, the staples are fired to penetrate the tissue, and under the action of the guide groove of the anvil, the staples will anastomose the tissues. In the process of using the above-mentioned medical stapler, the operator may inadvertently pull the handle before the stapler reaches the cutting state, causing false firing and adding trouble to the operation.

Utility model content

The purpose of the utility model is to provide a safety opening device for medical staplers that can only be fired when the stapler is in the kissing state.

In order to achieve the above object, the utility model adopts the following technical measures: the utility model includes a housing, a top shaft, a handle and a toggle seat; the top shaft is connected by a front shaft, a middle shaft and a rear shaft, and the rear shaft has steps, On the rear axle and at the rear of the step is a screw mandrel, the rear end of the screw mandrel is provided with an adjusting nut, the handle pin is connected to the housing and its forked lower end rides on the toggle seat on the rear axle, the above handle The upper pin is connected with a safety block, the lower end of the safety block is inserted into the casing, a spring is provided between the upper part of the handle and the safety block, a moving sleeve is arranged in the casing and at the rear of the step of the rear axle, and the rear end of the strip switch plate is fixed on the On the moving sleeve, there is a strip-shaped hole on the switch plate, and a slingshot-shaped locking piece is provided between the inner walls on both sides corresponding to the strip-shaped hole of the switch plate on the housing. The upper part of the locking piece can pass through the strip-shaped hole of the switch plate , the lower part of the safety block is against the upper part of the locking piece.

A viewing window is provided on the housing, a pointer ring is provided in the moving sleeve, a spring is provided between the adjusting nut and the pointer ring, and the arrow of the pointer is in the viewing window.

There are matching adjusting nuts and hollow studs in the above moving sleeve. The hollow studs are sleeved on the rear axle screw and are at the rear of the rear axle steps. The adjusting nuts are fixed on the moving sleeves by set screws. The hollow studs It is fixed on the adjusting nut by the set screw.

The central axis of the top shaft is formed by stacking two integral steel strips.

The utility model has the following positive effects:

1. When the utility model is in operation, when the anastomotic distance is not adjusted in place, because the lower end of the safety block is pressed by the switch plate, the safety block cannot be rotated, the safety block is in a locked state, and the handle cannot be pressed; when the top shaft drives the stapler When the anvil seat reaches the specified stapling distance, the stapler enters the anastomotic cutting area and is in the state of anastomotic cutting, the upper part of the locking part is separated from the safety block, the locking of the safety block is activated, and the safety block is automatically disengaged, and the handle can only be pressed at this time , so the utility model will not cause misfiring, and the position of kiss cut is accurate, fine adjustment is no longer needed, the operation is reliable and convenient, and the safety performance of the instrument is good.

2. The utility model links the window display with the safety block, and when the safety block is opened, the impact sound and the window display remind the operator that he has entered the stapling area at this time, and the stapling and cutting can be performed according to the regulations, further enabling the stapler The operation is safe and reliable.

3. The middle shaft of the utility model is an integral steel strip shaft, and the matching distance adjustment precision is high.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be further described in detail according to the specific embodiments below in conjunction with the accompanying drawings, wherein

Fig. 1 is a structural representation of the utility model;

Fig. 2 is an explosion diagram of the utility model;

Fig. 3 is a top shaft structure diagram;

Fig. 4 is the top view of the upper steel strip of the central axis;

Figure 5 is a top view of the lower steel strip of the central axis.

Detailed ways

The embodiment shown in the drawings includes a housing 1, a top shaft 2, a handle 3 and a toggle seat 4; the top shaft 2 is formed by connecting the front shaft 2-1, the middle shaft 2-2 and the rear shaft 2-3, and the rear shaft There is a step 2-31 on the 2-3, the screw mandrel 2-4 is on the rear axle 2-3 and the rear portion of the step 2-31, and the rear end of the screw mandrel 2-4 is provided with an adjusting nut 9, and the adjusting nut 9 extends A knob 10 is provided on the part out of the casing 1 . The middle shaft 2-2 of the top shaft 2 is formed by stacking an upper steel strip 1-21 and a lower steel strip 1-22.

The housing 1 is provided with a handle hole, the handle 3 is connected to the housing 1 by the first pin shaft 16, and its forked lower end 3-1 rides on the toggle seat 4 on the rear axle 2-3 through the handle hole Above, the above-mentioned handle 3 is located above the first pin shaft 16 and is connected with a safety block 14 by the second pin shaft 15, the lower end of the safety block 14 is inserted into the handle hole of the housing 1, and the upper part of the handle 3 and the safety block 14 are provided with The spring 13 that is sleeved on the second pin shaft 15.

The housing 1 is provided with a moving sleeve 7, and a matching adjusting nut 6 and a hollow stud 5 are arranged in the moving sleeve 7. The hollow stud 5 is set on the rear axle screw rod 2-4 and is located at the rear axle step 2-4. 31 rear portion, the adjusting nut 6 is fixed on the moving sleeve 7 by the set screw 18, and the hollow stud 5 is fixed on the adjusting nut 6 by the set screw 18. The adjusting nut 6 and the hollow stud 5 are used for adjusting the fitting distance.

The rear end of the strip-shaped switch plate 12 is fixed on the movable sleeve 7, the switch plate 12 is provided with a strip-shaped hole 12-1, and the inner wall on both sides of the corresponding switch plate strip-shaped hole 12-1 on the housing 1 is respectively provided with jacks The two feet of a slingshot locking piece 11 are inserted between the sockets on the inner walls on both sides, the upper part of the locking piece 11 can pass through the strip hole 12-1 of the switch plate 12, and the front side of the lower end of the safety block 14 is against On the upper rear side of the locking part 11, in the locked state, the locking part 11 is upright.

The housing 1 is provided with a window hole 1-1, and the moving sleeve 7 is provided with a pointer ring 17, and a spring 8 is arranged between the adjusting nut 9 and the pointer ring 17, and the arrow of the pointer ring 17 is in the window hole 1-1. middle. The spring 8 ensures that the pointer circle 17 moves synchronously with the moving sleeve 7 .

Before the utility model is used, the upper part of the locking part 11 is against the insurance block 14, and the handle 3 cannot be pressed.

When the utility model is in use, the adjusting nut 9 is rotated by the rotary knob 10, because the forward and backward movement of the adjusting nut 9 is hindered, under the action of the adjusting nut 9 and the screw mandrel 2-4, the jacking shaft 2 moves backward. When the jacking shaft 2 is moving backward, the hollow stud 5 is promoted, and the moving sleeve 7 is driven by the adjusting nut 6 to move backward. The moving sleeve 7 drives the switch plate 12 to move backward, and the pointer 17 moves backward synchronously. During the backward movement of the switch plate 12, the locking member 11 rotates step by step. When the upper part of the locking member 11 breaks away from the safety block 14, it has reached the exact anastomotic position. At this time, the safety block 14 is automatically opened under the action of the spring 13, and the pull Move the handle 3 to complete the firing.

Claims (4)

1. medical anastomat insurance opening device that puts in place comprises housing (1), apical axis (2), handle (3) and stirs seat (4); Apical axis (2) is by front axle (2-1), axis (2-2) and rear axle (2-3) are formed by connecting, has step (2-31) on the rear axle (2-3), rear axle (2-3) is gone up and the rear portion that is in step (2-31) is screw mandrel (2-4), the rear end of screw mandrel (2-4) is provided with adjusting nut (9), handle (3) pin joint is gone up and its forked lower end (3-1) rides in and is in stirring on the seat (4) on the rear axle (2-3) at housing (1), it is characterized in that: above-mentioned handle (3) is connected with safety block (14), insert in the housing (1) lower end of safety block (14), be provided with spring (13) between the top of handle (3) and the safety block (14), be provided with in the housing (1) and at step (2-31) rear portion of rear axle (2-3) and move cover (7), one strip switchboard (12) rear end is fixed on moves on the cover (7), switchboard (12) is provided with a strip hole (12-1), be provided with catapult shape locking member (11) between the both sides inwall on the housing (1), the strip hole (12-1) of switchboard (12) can be passed in the top of locking member (11), and the bottom of safety block (14) is against the top of locking member (11).

2. the medical anastomat according to claim 1 insurance opening device that puts in place, it is characterized in that: described housing (1) is provided with form (1-1), move in the cover (7) and be provided with pointer circle (17), be provided with spring (8) between adjusting nut (9) and pointer circle (17), the arrow of pointer circle (17) is in the form (1-1).

3. the medical anastomat according to claim 1 insurance opening device that puts in place, it is characterized in that: in moving cover (7), be provided with adjusting nut (6) and the hollow stud (5) that matches, hollow stud (5) is enclosed within on the rear axle screw mandrel (2-4) and is in rear axle step (2-31) rear portion, adjusting nut (6) is fixed on by holding screw and moves on the cover (7), and hollow stud (5) is fixed on the adjusting nut (6) by holding screw.

4. the medical anastomat according to claim 1 insurance opening device that puts in place is characterized in that: the axis (2-2) of apical axis (2) forms by 2 whole steel bands are folded mutually.

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