CN202051782U

CN202051782U - Operation suction cutter

Info

Publication number: CN202051782U
Application number: CN2011200238806U
Authority: CN
Inventors: 郑德益
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-25
Filing date: 2011-01-25
Publication date: 2011-11-30
Anticipated expiration: 2021-01-25

Abstract

The utility model belongs to the technical filed of medical instruments, and particularly relates to an operation suction cutter. The cutter includes a handle and a cutting tool which includes an inner cutting tool and an outer cutting tool that are cooperatively arranged, a motor, a driving gear, a main shaft, a driven gear and a bearing are arranged in the handle, the inner cutting tool is movably cooperated with the main shaft, the outer cutting tool is cooperated with the handle, the driving gear is engaged with the driven gear which is fixedly connected on the main shaft, a through hole is arranged inside the main shaft, a drainage hole is arranged on the handle, a blocking nut and a leather pipe joint are arranged on the handle, one end of the main shaft is cooperated with the inner cutting tool, and the other end of the main shaft is communicated with the leather pipe joint. The cutter is characterized in that the through hole of the main shaft includes an inner through hole, a polygonal through hole and an outer through hole that are communicated, the polygonal through hole is cooperated with the tail end of the inner cutting tool, and the outer through hole is cooperated with the outer cutting tool. The cutter provided has the advantages of simple structure, convenient use, and smooth suction of pathological tissues.

Description

Operation suction cutter

Technical field

This utility model belongs to and relates to technical field of medical instruments, particularly relates to a kind of operation suction cutter.

Background technology

Operation suction cutter is the electrical surgical instrument that the department of eye Minimally Invasive Surgery is used, and can cooperate the endoscope in the department of eye to cut accurately, and can attract, collect pathological tissue continuously.Operation suction cutter comprises handle and cutter, described cutter is formed by interior cutter and the cooperation of outer cutter, in handle, be provided with motor, shaft gear, main shaft, gear, bearing, interior cutter with the main shaft clearance fit, outer cutter matches with handle, transmitting gear is meshed with the cutting gear, the cutting gear is socketed on the main shaft, the inside of described main shaft is through hole, handle is provided with the sheath fixed mount and attracts head, on the sheath fixed mount, be connected with trunking, one end of main shaft matches with interior cutter, and the other end of main shaft communicates with attracting head; Since in adopting cutter with the main shaft clearance fit, the structure that outer cutter matches with handle, and interior cutter just is connected the port of main shaft, cutter and the outer cutter place of being difficult to are at grade in during use, exist certain clearance between the two, when operation suction cutter is worked, interior cutter rotation cuts down pathological tissue in the process that is sucked out, owing to exist certain clearance between interior cutter and the outer cutter, the pathological tissue that then cuts down, blood and slime has part to be trapped in this gap, causes that cutter rotates slowly, cause the pollution cutter simultaneously, shorten the service life of operation suction cutter.

Summary of the invention

The purpose of this utility model provide a kind of simple in structure, easy to use, attract pathological tissue unobstructed

Operation suction cutter.

Technical solution of the present utility model is to adopt in such a way to realize: it comprises handle and cutter, described cutter is formed by interior cutter and the cooperation of outer cutter, in handle, be provided with motor, driving gear, main shaft, driven gear and bearing, interior cutter and main shaft clearance fit, outer cutter matches with handle, driving gear is meshed with driven gear, driven gear is fixed on the main shaft, the inside of described main shaft is through hole, handle is provided with conduction hole, locking nut and leather pipe joint are installed on handle, one end of main shaft matches with interior cutter, and the other end communicates with leather pipe joint, and the through hole that it is characterized in that main shaft is by the inner via hole that communicates, polygon through hole and accessibke porosity constitute, described polygon through hole matches with the tail end of interior cutter, and accessibke porosity matches with outer cutter.

Described outer cutter is provided with the outer base of tool, this outer base of tool can with the accessibke porosity clearance fit of main shaft.

The structure that cutter and outer cutter all match with main shaft in the employing of the present utility model, thereby the centrage of cutter and outer cutter at grade in making, because spindle through-hole all is on the identical axial line with interior cutter and outer cutter, avoided the existing in prior technology defective, created advantage for ensureing normally carrying out of performing the operation with safe and sanitary, also can prolong simultaneously the service life of operation suction cutter, therefore, it is a kind of comparatively ideal operation suction cutter.

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

Description of drawings

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

Fig. 2 is a partial structurtes sketch map of the present utility model

Drawing reference numeral explanation: 1-locking nut, 2-motor, 3-handle, 4-cutter positioning mechanism, 5-cutter, the 6-through hole, 7-leather pipe joint, 8-driving gear, 9-main shaft, 10-setscrew nut, 11-spring 12-steel ball seat, 13-steel ball, 14-withdrawing cover, the outer cutter of 15-, cutter in the 16-, the outer base of tool of 17-, 18 accessibke porosities, 19-polygon through hole, knife bar seat in the 20-, 21-regulates sealing ring, 22-spacer, 23-bearing, 24 driven gears, 25-inner via hole, 26-conduction hole, 27-space.

The specific embodiment

With reference to Fig. 1, Fig. 2: this utility model comprises handle 3 and cutter 5, described cutter 5 is formed by

interior cutter

16 and 15 cooperations of outer cutter, in handle 3, be provided with motor 2, driving gear 8, main shaft 9, driven gear 24 and bearing 23, interior cutter 16 and main shaft 9 clearance fit, outer cutter 15 matches with handle 3, driving gear 8 is meshed with driven gear 24, driven gear 24 is fixed on the main shaft 9, the inside of described main shaft 9 is through hole, handle 3 is provided with conduction hole 26, locking nut 1 and leather pipe joint 7 are installed on handle 3, one end of main shaft 9 matches with interior cutter 16, and the other end communicates with leather pipe joint 7, and the through hole of main shaft 9 is by the inner via hole 25 that communicates, polygon through hole 19 and accessibke porosity 18 constitute, described polygon through hole 19 matches with the tail end of interior cutter 16, and accessibke porosity 18 matches with outer cutter 15.

Be fixed with the outer base of tool 17 on the described outer cutter 15, this outer base of tool 17 can with accessibke porosity 18 clearance fit of main shaft 9.

Knife bar seat 20 in being set with on the cutter 16 in described, knife bar seat 20 is plugged in the polygon through hole 19 of main shaft 9 in this, and interior cutter 16 can rotate with main shaft 9.

Cutter 16 all matches with main shaft 9 with outer cutter equal 15 in described, and interior cutter 16 overlaps with the axial line of main shaft 9 with the centrage of outer cutter 15, thereby they are all located at grade.

Be connected with setscrew nut 10 on the described handle 3, the inside bottom of setscrew nut 10 contacts with steel ball seat 12, these steel ball sleeve 12 main shafts outside and the base of tool 17 pivot bush units, steel ball sleeve 12 is provided with movable steel ball 13, on steel ball sleeve 12, be socketed with withdrawing cover 14, the aperture, outer end of this withdrawing cover 14 is greater than its inner aperture, at setscrew nut 10, steel ball sleeve 12 and withdrawing overlap a fixed gap 27 between 14 threes, in this space 27, be provided with spring 11, this spring 11 can overlap withdrawing 14 presses to the base of tool 17, withdrawing overlaps 14 inboards can push down steel ball 13, and steel ball 13 can contact with the base of tool 17, play a part to stablize the base of tool 17 runnings, and when withdrawing seat 14 is pressed to setscrew nut 10 bottoms, the aperture of withdrawing seat 14 outer ends is bigger, and at this moment the pressure of 13 pairs of base of tools 17 of steel ball obtains discharging, thereby can easily cutter 5 be withdrawed from.

Operation principle of the present utility model is identical with operation suction cutter operation principle of the prior art, does not do at this and gives unnecessary details.

Claims

1. operation suction cutter, comprise handle and cutter, described cutter is formed by interior cutter and the cooperation of outer cutter, in handle, be provided with motor, driving gear, main shaft, driven gear and bearing, interior cutter and main shaft clearance fit, outer cutter matches with handle, driving gear is meshed with driven gear, driven gear is fixed on the main shaft, the inside of described main shaft is through hole, handle is provided with conduction hole, and locking nut and leather pipe joint are installed on handle, and an end of main shaft matches with interior cutter, the other end communicates with leather pipe joint, the through hole that it is characterized in that main shaft is by the inner via hole that communicates, polygon through hole and accessibke porosity constitute, and described polygon through hole matches with the tail end of interior cutter, and accessibke porosity matches with outer cutter.

2. operation suction cutter according to claim 1 is characterized in that being fixed with the outer base of tool on the described outer cutter, this outer base of tool can with the accessibke porosity clearance fit of main shaft.

3. operation suction cutter according to claim 1, knife bar seat in it is characterized in that being set with on the described interior cutter, knife bar seat is plugged in the polygon through hole of main shaft in this, and interior cutter can rotate with main shaft.

4. operation suction cutter according to claim 1 it is characterized in that described interior cutter all matches with main shaft with outer cutter, and interior cutter overlaps with the axial line of main shaft with the centrage of outer cutter.

5. operation suction cutter according to claim 1, it is characterized in that being connected with setscrew nut on the described handle, the inside bottom of setscrew nut contacts with the steel ball seat, this steel ball sleeve main shaft outside and base of tool pivot bush unit, steel ball sleeve is provided with movable steel ball, is socketed with the withdrawing cover on steel ball sleeve, and the aperture, outer end of this withdrawing cover is greater than its inner aperture, between setscrew nut, steel ball sleeve and withdrawing cover three, a fixed gap is arranged, in this space, be provided with spring.