Digestive tract anastomat

A technology of staplers and anvils, which is applied in the field of medical devices and can solve problems such as wrong assembly of suture needles, problems with staplers, and medical accidents

Active Publication Date: 2012-07-11
吴伟敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The staple cartridge of the above-mentioned stapler has three circles of tissue contact surfaces with different heights, and the heights of the contact surfaces of the corresponding nail anvils remain the same, but when the staples with different lengths are assembled into the corresponding nail grooves of the nail pushing device , because the distance between the nail groove and the nail groove is very small, it is very easy for the assembler to assemble the needle into the wrong nail groove, which will cause problems in the use of the stapler and may cause corresponding medical accidents

Method used

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  • Digestive tract anastomat
  • Digestive tract anastomat
  • Digestive tract anastomat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0064] See figure 1 and figure 2 , The alimentary canal stapler of this embodiment is composed of a nail anvil assembly 1 and a nail pushing device. The nail pushing device includes a nail barrel assembly 2 , a stapler body 3 , a handle assembly 4 , a jacking shaft assembly 5 , a push rod assembly 6 , a control assembly 7 and a safety mechanism 8 .

[0065] See image 3 , The nail anvil assembly 1 includes a nail anvil 11 , a seat cap 12 , a spacer ring 13 and a positioning circlip 14 .

[0066] See Figure 4 to Figure 7 The nail anvil 11 is a steel integral piece with a central stepped hole 11-1, consisting of a seat main part 11a located on the outer periphery of the upper side and a central lower part connected to the seat main part 11a and located at the center of the seat main part 11a. The connection part 11b is composed.

[0067] The main part 11 a of the seat body is circular in plan view as a whole, and the main part 11 a of the seat body is provided with a cent...

Embodiment 2）

[0101] See Figure 8 to Figure 11 , the digestive tract stapler of this embodiment is basically the same as that of Embodiment 1, the difference is that: the height of the upper end surface of the main part 11a of the seat body 11a of the anvil 11 is the same, that is, the upper and lower positions of the distribution of the three circles of nail grooves are the same; And the lower end surface of the staple bin cover 22 is in the shape of a step with a high outside and a low inside, and the height a of the step is 0.3 mm;

[0102] The 11 staples 21 of the outermost ring in the staple bin cover 22 are distributed in a higher position on the outside of the step, and the height positions of the 11 staples 21 of the outermost ring on the staple bin cover 22 are higher than those of the inner ring. The height positions where the 22 staples 21 are distributed are 0.3 mm higher. When the stapler is anastomotic, the mucous membrane close to the wall of the digestive tract will also n...

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PUM

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Abstract

The invention relates to a digestive tract anastomat, which comprises a screw abutting seat component and a screw pushing device. The screw pushing device comprises a screw barrel component, an anastomat body and the like. The screw barrel component comprises anastomosis screws, a screw bin cover and a screw bin sleeve. The screw bin cover is connected onto the screw bin sleeve, and the anastomosis screws are placed in corresponding screw bin holes of the screw bin sleeve. The screw abutting seat component comprises a seat cap, a scalpel gasket, a positioning clamp spring tube and a screw abutting seat. The screw abutting seat is a steel integral part with a central step hole and comprises a seat body main portion and a connecting portion connected to the center of the lower side of the seat body main portion. Three circles of screw grooves which are distributed in a concentric circles manner are arranged on the upper end surface of the seat body main portion from inside to outside. The upper end surface of the seat body main portion of the screw abutting seat is in the shape of a step with the low outside and the high inside, and all the screw grooves on the third circle are arranged on the lower portion of the outer side of the upper end surface of the seat body main portion; or the lower end surface of the screw bin cover is in the shape of a step with the high outside and the low inside, and the anastomosis screws on the outermost circle in the screw bin cover are distributed in the higher portion of the outer side of the step of the screw bin cover.

Description

technical field [0001] The invention relates to a medical device, in particular to an alimentary canal stapler for anastomosing tubular tissues in the human alimentary canal. Background technique [0002] After the surgeon carries out surgical resection of a part of human tubular tissues such as intestinal tract and esophagus, when the remaining tubular tissues are to be connected, the usual method is to use special staples to connect by staplers. The digestive tract stapler mainly includes a nail pushing device and a nail anvil assembly connected to the nail pushing device. After the operator is ready to fire the stapler, when the operator pulls the trigger to fire the stapler, the staple pushing device will push the staple The two anastomotic sites that pass through the tubular tissue of the human body and need to be butted are pushed into the anvil seat of the nail anvil assembly, so that the two ends of the anastomotic needle bend inward, and the two anastomotic sites o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/115
Inventor 吴伟敏
Owner 吴伟敏
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