CN201519169U

CN201519169U - Medical stapler with function of self locking

Info

Publication number: CN201519169U
Application number: CN200920167410XU
Authority: CN
Inventors: 曲直; 乔伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-23
Filing date: 2009-07-23
Publication date: 2010-07-07
Anticipated expiration: 2019-07-23

Abstract

The utility model relates to a medical stapler with the function of self locking, which belongs to the field of medical instruments and apparatuses and comprises a nail propping seat component at the front end and a nail bin component forming an anastomotic gap with the nail propping seat component. A lead screw with two sections of self-locking threads is arranged behind the components. The lead screw is externally sheathed with a nut which is embedded with a guiding pin; and the external part of the guiding pin is provided with a protecting sleeve; and the anastomotic gap of the front end can be adjusted and controlled through the accurate rotation of a knob at the tail end. In the structure, the guiding pin is positioned in the self locking thread sections on the lead screw when a titanium nail is fired, so that the screw nut and the knob can not rotate freely, thereby realizing the self locking function and ensuring the unchanged anastomotic gap during firing and excellent suture quality.

Description

The medical anastomat that has auto-lock function

Technical field

This utility model belongs to medical instruments field, specially refers to a kind of disposable medical anastomat that has auto-lock function.

Background technology

In medical science applied surgical operation, medical anastomat is the requisite a kind of medical apparatus and instruments that aids in the edge of a knife sewing process, and for diffusion and the cross infection that prevents pathogenic bacteria, this class apparatus generally mostly is disposable use.High-quality anastomosis be one of key of guaranteeing the surgical operation success, and the high-quality of anastomosis has closely-related the contact with employed anastomat structure again.As the tube type anastomat of main medical apparatus and instruments, be applied in widely in the human body alimentary canal operation.It is local clearly inadequately to be specially adapted to operated interface portion bit comparison weak point or sight line, and these places will rely on above-mentioned anastomat to realize the intact stitching of wound energetically.As production, research and develop the unit of this class medical apparatus and instruments, the applicant has successively carried out repeatedly structural improvement, many patents of declaring before this, all put down in writing its special improved footprint one by one, such as " the disposable anastomat with automatic safety " patent No. is 2007101078338, the patent No. is 200820178201.0 and for example " to have a plurality of noisy one-piece type nail bit Dispoable medical anastomats of letting out the hole ", and the disposable medical anastomat of backspin spring medicated cap " but the have " patent No. of declaring recently is 200920163688.X, and each patent all center on a kind of technical progress and raising and quilt is got off certainly.This patent application " the medical anastomat that has auto-lock function " also is in use, answer the user in use demand and the project newly developed that puts forward.

Summary of the invention

This utility model technical issues that need to address are, at disposable anastomat structure just in use, in the process of sew up wound, when nail bit is excited ejaculation, its anastomotic stoma that is sewn often can not guarantee that the gap strictness is constant, this will influence suture quality, in order to overcome this weak point, just wish to redesign out the increase auto-lock function, guarantee the new construction that the gap is constant.The purpose of this utility model is to provide a kind of medical anastomat that has auto-lock function, has guaranteed the order of accuarcy of wound suture from structure.The purpose of this utility model realizes by the following technical solutions, a kind of medical anastomat that has auto-lock function, the end nail holder assembly that comprises front end, nail bin groupware with the identical gap of its formation, after the assembly is the screw mandrel that has with two sections self-locking threads, screw mandrel is with nut outward, studs with guide pin on this nut, and its outside is provided with sheath.By the accurate rotation of tail end knob, can adjust, control the identical gap of front end.Described screw mandrel with two sections self-locking threads, its guide pin, nut, peripheral hardware sheath that is set in the nut all is made of metal.

The beneficial effects of the utility model are, when this structure excited at the titanium nail, guide pin was in the self-locking thread section on the screw mandrel, make nut and knob freely not to rotate, thereby the realization auto-lock function, the gap of guaranteeing to coincide in the excitation process does not change, and suture quality is good.And, reduce exciting the distortion that is produced because the parts manufacturing makes metal into by plastics, and the evocatory that can bear improves greatly.

Description of drawings

Fig. 1 is the medical anastomat structural representation that has auto-lock function

Fig. 2 is afterbody self-locking mechanism and knob connection diagram

Fig. 3 is the screw mandrel outline drawing that has two kinds of self-locking threads

The specific embodiment

Represent the medical anastomat structural representation that has auto-lock function described in the utility model with reference to Fig. 1.What be positioned at leading section among the figure is end nail holder assembly 1, with there is the gap that coincide be nail bin groupware 2, when anastomat is worked according to the adjusting of afterbody knob 11, the gap that size can be arranged between 1 and 2, big gap is used for upper and lower two tissues that the doctor connects operation, when the knob with afterbody is screwed into little gap, be used for connecting identical usefulness.With its back is push-rod assembly 3, connection and locking aluminum pipe 4; the back is flexible handle assembly 5 and fixed handle assembly 6 again; the fixed handle core is the screw mandrel 7 that has two kinds of self-locking threads; the screw mandrel periphery is with nut 9; guide pin 8 just is set in the nut 9; its outside is provided with

protective sleeve

10, and 7,8,9,10 each part all adopt the metal manufacturing herein, than adopting the plastics manufacturing to have higher holding capacity in the past.With reference to Fig. 2, be expressed as afterbody self-locking mechanism and knob connection diagram, adjusting knob 11 makes that 8,9,10 assemblies rotations, the sheath 10 that adds are for preventing that 8 deviate from from 9, and 8 and 9 are the 1Cr18Ni9 material, and 9 is metallic aluminum material.With reference to Fig. 3, expression has the screw mandrel outline drawing of two kinds of self-locking threads, and 7.1 and 7.2 is two sections self-locking threads among the figure.

Claims

1. a medical anastomat that has auto-lock function comprises that holder assembly is followed closely at the end of front end, with the nail bin groupware in the identical gap of its formation, it is characterized in that, be the screw mandrel that has with two kinds of self-locking threads after the assembly, and screw mandrel is with nut outward, stud with guide pin on this nut, its outside is provided with sheath.

2. the medical anastomat that has auto-lock function according to claim 1 is characterized in that, described screw mandrel with two kinds of self-locking threads, and its guide pin, nut, peripheral hardware sheath that is set in the nut all is made of metal.