CN201564535U - Nut cap for tube-shaped anastomat - Google Patents

Abstract

The utility model discloses a nut cap for a tube-shaped anastomat, and belongs to a medical instrument. A sink cavity is formed at the internal end of the cap body; and a stop dog, which is a protrusion radially protruding from the peripheral wall of the sink cavity or axially protruding from the bottom of the sink cavity, is formed in the sink cavity. The nut cap provided by the utility model has low probability of falling out from the adjusting handle of a tube-shaped anastomat, so that the working reliability of the tube-shaped anastomat is improved..

Description

The block of tube type anastomat

Technical field

This utility model relates to a kind of medical apparatus and instruments, especially a kind of tube type anastomat.

Background technology

The disease of human stomach, lung tissue and digestive tract aspect mainly adopts the treatment means of operation, adopts tube type anastomat in surgical operation widely, with the tissue of coincideing.Adopt tube type anastomat can reduce operating time, improve the operation quality, anastomotic stoma is solid and reliable, and haemostatic effect is good.The block of existing tube type anastomat is the rear end that directly is contained in regulating handle with thrust, the regulating handle inner chamber has nut and screw mandrel, nut is connected with wire rod thread, when closing anastomat, can be in the screw mandrel rotary course to the back end motion of regulating handle, the rear end of screw mandrel is easy to back down block, makes block come off from the rear end of regulating handle.Doctor's requirement to medical apparatus and instruments when carrying out anastomosis operation is very high, after the block of regulating handle rear end comes off, the minimum clearance that anastomat is coincide can not get guaranteeing, the space of anastomosis staple percussion molding is not enough, cause the anastomosis staple molding effect bad, thereby cause the failure of operation, adopted the tube type anastomat dependability of this block low, reduced the safety of operation.

The utility model content

The purpose of this utility model is: a kind of block that is difficult for coming off, can improving from the regulating handle rear end of tube type anastomat the tube type anastomat of tube type anastomat dependability is provided.

In order to achieve the above object, the technical solution of the utility model is: a kind of block of tube type anastomat, the inner of lid has heavy chamber, is provided with backstop in the heavy chamber of described lid.

Described backstop is radially-protruding projection on the perisporium in heavy chamber.

The top of radially-protruding projection is a concaved circular cambered surface on the perisporium of described heavy chamber.

Described backstop is the projection of axially having stretched on the bottom surface in heavy chamber.

Has at least one slot on the periphery wall of described lid.

Described slot is four axially extended straight troughs.

Has at least one convex tendon on the periphery wall of described lid.

Described convex tendon is four axially extended straight muscle.

The beneficial effect that this utility model had is: owing to be provided with backstop in the heavy chamber of the lid of the block of this utility model tube type anastomat, block utilizes the corresponding bayonet socket assembling of the regulating handle of twisting resistance and tube type anastomat, the heavy intracavity at block is stretched in the rear end of screw mandrel, when closing anastomat, after screw mandrel rotates to an angle, the threaded end of screw mandrel can be against on the backstop of block, make screw mandrel can not continue to rotate in the direction, thereby make the screw mandrel can not be to the axially-movable of the rear end of regulating handle, promptly do not continue to compress block, thereby block is not prone to the phenomenon that comes off, block is firm with the regulating handle assembling, the minimum clearance that makes anastomat coincide is guaranteed, and the space of anastomosis staple percussion molding is also enough, makes the anastomosis staple good forming effect, achieve success thereby guarantee to perform the operation, thereby the dependability height of the tube type anastomat of employing this utility model block, long service life, operation efficient and safety are all very high.

Description of drawings

Fig. 1 is the structural representation of the block of this utility model tube type anastomat;

Fig. 2 is along A-A direction cutaway view among Fig. 1;

Fig. 3 is that the B of Fig. 1 is to view;

Fig. 4 is the block and the screw mandrel assembly structure sketch map of this utility model tube type anastomat;

Fig. 5 is the schematic perspective view of the block of this utility model tube type anastomat;

Fig. 6 is the block of this utility model tube type anastomat and the perspective view of screw mandrel assembling.

The specific embodiment

Below in conjunction with the embodiment that accompanying drawing provides, the utility model is described in further detail.

Shown in Fig. 1,2,3,4,5,6, a kind of block of tube type anastomat, the inner of lid 1 has heavy chamber 2, is provided with backstop 3 in the heavy chamber 2 of described lid 1.

Shown in Fig. 1,2,4,5,6, in order further to improve screw mandrel 5 and the adaptability of blocking a shot and assembling, make the heavy chamber 2 of block have suitable space to hold the rear end of screw mandrel 5, described backstop 3 is radially-protruding projectioies on the perisporium in heavy chamber 2, and the degree of depth of stop 3 is controlled in 1～8mm scope, the top of radially-protruding projection is a concaved circular cambered surface on 2 perisporiums of described heavy chamber, this concaved circular cambered surface can with screw mandrel 5 the axle core periphery be rotatably assorted, can after rotating to an angle, stably be against on the backstop 3 with the threaded end 5-1 that guarantees screw mandrel 5; Certainly, described backstop 3 projection of also axially having stretched on the bottom surface in heavy chamber 2.

As Fig. 1,2,3,4,5, shown in 6, in order further to improve the fastness of regulating handle and block attaching, has at least one slot 4 on the periphery wall of described lid 1, and slot 4 is four axially extended straight troughs on the periphery wall of this utility model lid 1, after regulating handle and the block assembling, injecting fixative in slot 4 gets final product, certainly, also can be provided with at least one groove in the regulating handle axially extending bore, and has at least one convex tendon on the periphery wall of lid 1, the convex tendon of lid 1 is installed in the groove of regulating handle, and described convex tendon is four axially extended straight muscle the bests, also can further improve the fastness of block and regulating handle attaching.

During this utility model assembling, block utilizes twisting resistance to be installed on the corresponding bayonet socket of regulating handle of tube type anastomat by original axial thrust instead, stretch in the heavy chamber 2 of block (as shown in Figure 4) rear end of screw mandrel 5, when closing anastomat, after screw mandrel 5 rotates to an angle, the threaded end 5-1 of screw mandrel 5 can be against on the backstop 3 of block (as shown in Figure 6), make screw mandrel 5 can not continue to rotate in the direction, thereby make the screw mandrel 5 can not be to the axially-movable of the rear end of regulating handle, promptly do not continue to compress block, and the difficult phenomenon that occurs coming off from the regulating handle rear end of block, the minimum clearance that makes anastomat coincide is guaranteed, the space of anastomosis staple percussion molding is also enough, achieves success thereby guarantee to perform the operation.

Claims (8)

1. the block of a tube type anastomat, the inner of lid (1) has heavy chamber (2), it is characterized in that: be provided with backstop (3) in the heavy chamber (2) of described lid (1).

2. the block of tube type anastomat according to claim 1 is characterized in that: described backstop (3) is radially-protruding projection on the perisporium in heavy chamber (2).

3. the block of tube type anastomat according to claim 2, it is characterized in that: the top of radially-protruding projection is a concaved circular cambered surface on the perisporium of described heavy chamber (2).

4. the block of tube type anastomat according to claim 1 is characterized in that: described backstop (3) is the projection of axially having stretched on the bottom surface in heavy chamber (2).

5. the block of tube type anastomat according to claim 1 is characterized in that: have at least one slot (4) on the periphery wall of described lid (1).

6. the block of tube type anastomat according to claim 5, it is characterized in that: described slot (4) is four axially extended straight troughs.

7. the block of tube type anastomat according to claim 1 is characterized in that: have at least one convex tendon on the periphery wall of described lid (1).

8. the block of tube type anastomat according to claim 7, it is characterized in that: described convex tendon is four axially extended straight muscle.

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