CN103251441A

CN103251441A - Handle of laparoscope scalpel

Info

Publication number: CN103251441A
Application number: CN2013102320832A
Authority: CN
Inventors: 沈靖
Original assignee: 沈靖
Current assignee: Shanghai KLES Industrial Design Co. Ltd.
Priority date: 2013-06-13
Filing date: 2013-06-13
Publication date: 2013-08-21
Anticipated expiration: 2033-06-13
Also published as: CN103251441B

Abstract

The invention discloses a reusable handle of a laparoscope scalpel in the technical field of surgical instruments. The handle comprises a closed housing, a transmission mechanism, a trigger and an output rotating shaft, wherein the transmission mechanism is arranged in an inner space of the closed housing; the trigger is movably connected with an outer wall of the closed housing; and magnetic pieces are arranged at an input part of the transmission mechanism, on the trigger, at an output part of the transmission mechanism and on the output rotating shaft respectively, so that an acting force on the trigger is transferred to the output rotating shaft in a non-contact manner. The handle adopts the totally-closed housing, so that blood and other dirt are prevented from entering the interior of the handle during a surgery, and the handle can be used continuously and safely after disinfected integrally.

Description

Laparoscope scalpel handle

Technical field

What the present invention relates to is a kind of device of technical field of surgical instrument, specifically is a kind of nonexpondable laparoscope scalpel handle.

Background technology

The disposable handle of the general use of existing laparoscope scalpel namely abandons after the use, though avoided cross infection, the surgery cost costliness, patient's financial burden is heavier.Disposable handle structurally is open cavity, and through hole is arranged on the handle, and inner shaft and gear carry out the transmission of contact moment by through hole, like this, blood and dirt have an opportunity to enter handle inside during operation, pollute, and influence the work efficiency of internal delivery mechanism.

For handle can repeatedly use, improve on the basis of Open architecture at present, method is that the pollution of sealing ring to avoid occurring is set in the position of through hole.But sealing ring can not guarantee to isolate fully, and blood etc. still might infiltrate handle inside, and like this, patient with operation still faces the risk of cross infection.

Find Chinese patent literature CN2696724, open day 2005-05-04 through the retrieval to prior art, put down in writing a kind of trigger of electrostatic spraying gun, comprise trigger, trigger supporting-point, also comprise the interlock Magnet of Bearing Angle, the fixed magnet on the rifle body corresponding with interlock Magnet; The Magnet of trigger bottom is corresponding with the dry-reed tube switch in the rifle body.Just adopt magnetic spring and magnetic switch, the reliability of trigger strengthens, fault rate lowers, thereby has prolonged the service life of electrostatic spraying gun.But the deficiency of this technology is: when voltage is enough high, spray gun end near zone forms the air ionization district, air is ionizing and heating intensely, use incessantly in time as a segment length that temperature will be more and more higher in the rifle body, will reduce because Magnet is subjected to the rising magnetic of temperature, so the magnetic trigger of paint spray gun has the possibility of inefficacy.This structure and characteristics all can't be used for operating theater instruments simultaneously.

Summary of the invention

The present invention is directed to the prior art above shortcomings, a kind of nonexpondable laparoscope scalpel handle is provided, this handle adopts the housing of full-closed structure, blood and other dirts enter handle inside in avoiding performing the operation, after making that this handle carries out overall disinfection, can continue to come into operation safely.

The present invention is achieved by the following technical solutions, the present invention includes: closure casing, drive mechanism, trigger and output revolving shaft, wherein: drive mechanism is arranged in the inner space of closure casing, trigger is movably connected on the outer wall of closure casing, be respectively equipped with the pair of magnetic part on the input part of drive mechanism and the trigger and on efferent and the output revolving shaft, make that the active force on the trigger is passed to output revolving shaft in the noncontact mode.

Two sides of described closure casing are provided with inside groove, and trigger is linked to each other respectively with two grooves by connector.Two connectors at this place can not run through housing.

Described closure casing comprises: the loam cake of shape symmetry, lower cover and inserts quadric injection mould sealing strip, and wherein: loam cake and lower cover seal by ultrasonic bonding, and the outer periphery slit after the ultrasonic bonding is again by inserts injection moulding secondary seal.

Described drive mechanism comprises: gear, tooth bar and ball-screw nut, wherein: the correspondence position of gear and trigger arranges the pair of magnetic part, one end of tooth bar and gear engagement, the other end and ball-screw nut engagement, the correspondence position of ball-screw nut and output revolving shaft arranges the pair of magnetic part.

The spacing of described first magnetic part and second magnetic part is preferably 2.3mm.

Described magnetic part is preferably neodymium iron boron, trade mark N50; This magnetic part is more preferably handled through face coat.

Described face coat is for electroplating: nickel, zinc, gold or chromium or coating epoxy resin.

Transmission place of described gear and trigger, ball-screw nut and output revolving shaft all realizes contactless transmission by magnetic part, can not cause operation to pollute.

Technique effect

Housing of the present invention is totally enclosed type, and dirts such as the blood in the operation can't enter in the housing, and housing can overall disinfection, still can reuse safely after the sterilization, has reduced patient's financial burden.

Simultaneously, adopt scalpel original function of the present invention can not be affected, can guarantee the quality of performing the operation.

Description of drawings

Fig. 1 is external structure of the present invention;

Fig. 2 is front section view of the present invention;

Fig. 3 is the M portion partial enlarged drawing of Fig. 2;

Fig. 4 is side sectional view of the present invention;

Fig. 5 is the A portion partial enlarged drawing of Fig. 4;

Fig. 6 is the R portion partial enlarged drawing of Fig. 5.

The specific embodiment

Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.

Embodiment 1

As shown in Figure 1 and Figure 2, present embodiment comprises: closure casing, drive mechanism, trigger 3 and output revolving shaft 9, wherein: drive mechanism is arranged in the inner space of closure casing, trigger 3 is movably connected on the outer wall of closure casing, be respectively equipped with first magnetic part 6 and second magnetic part 11 on the input part of drive mechanism and the trigger 3 and on efferent and the output revolving shaft 9, make that the active force on the trigger 3 is passed to output revolving shaft 9 in the noncontact mode.

As Fig. 2, shown in Figure 3, described drive mechanism comprises: gear 2, tooth bar 5 and ball-screw nut 8, wherein: the correspondence position of gear 2 and trigger 3 arranges first magnetic part 6, one end of tooth bar 5 and gear 2 engagements, the other end and ball-screw nut 8 engagements, ball-screw nut 8 arranges second magnetic part 11 with the correspondence position of output revolving shaft 9.

Described gear 2 and trigger 3, ball-screw nut 8 all are contactless transmissions with transmission place of output revolving shaft 9, can not cause operation to pollute.

Described output revolving shaft 9 is connected by end cap 10.

When operation is used, pull trigger 3, this locates 6 effects of first magnetic part, and gear 2 rotates, and active force is through conducting to ball-screw nut 8, and ball-screw nut 8 rotations drive second magnetic part, 11 effects at this place, and output revolving shaft 9 rotates, active force output.

Magnetic part in the present embodiment uses the ferromagnetic material neodymium iron boron, trade mark N50, and N50 material Magnet peak magnetism of material is strong, Gauss: 8500 surface treatments; The electronickelling serviceability temperature is less than 80 ℃, and the mechanical performance of ndfeb magnet will be got well than other Magnet, is easier to the processing of cutting and boring and complicated shape.The general face coat of ndfeb magnet is handled, electrodepositable nickel (Ni), zinc (Zn), gold (Au), chromium (Cr), epoxy resin (Epoxy) etc.

Magnetic force calculates: by the Maxwell formula of simplifying: F=(B*B*S)/2 μ ₀The magnetic pole area m of S(unit ²); Magnetic pole surfaces magnetic induction density B (T of unit); Plastic cement PP pcrmeability and permeability of vacuum are almost identical, permeability of vacuum μ ₀=4 π * 10 ^-7(H/m of unit); B gets 0.4～0.7(T); Magnet specification 5*20*15mm; Because the Magnet trade mark inquired into is N50, B gets 0.65(T here); Acting surface is that the magnetic force that 20*15mm event two Magnet right opposites obtained as the time spent is: F=(B*B*S)/2 μ ₀=0.65*0.65*0.0003/2*4 π * 10 ^-7=50.43N, this numerical value have also verified first trip forward pulling force data in the following form.

The magnetic force test: relation between Magnet magnetic force and the distance, test data gathers following form: Magnet specification 5*20*15mm; The ferromagnetic material neodymium iron boron, trade mark N50; Dynamometric device is chest expander; 20 ℃ of ambient temperatures.

There is above experimental data to find out that two is more big over against the more little magnetic force of the distance between the Magnet; This distance of installing between two Magnet is 2.3mm.

As Fig. 4, shown in Figure 5, two sides of described closure casing are provided with inside groove, and trigger 3 is linked to each other respectively with two grooves by connector 7.Two connectors 7 at this place can not run through housing, and in the prior art, herein be through hole, trigger 3 and the direct Contact Transmission of inner drive disk assembly, only the sealing member by the through hole place seals.

In the present embodiment, described connector 7 adopts screw to realize that those skilled in the art also can adopt other conventional meanses with similar effect to replace under other different situations.

Described closure casing comprises: the loam cake 4 of shape symmetry, lower cover 1 and inserts quadric injection mould sealing strip 12, wherein: as shown in Figure 6, loam cake 4 and lower cover 1 are by the ultrasonic bonding sealing, and the outer periphery slit after the ultrasonic bonding is inserts quadric injection mould sealing strip 12 by inserts injection moulding secondary seal again.

Claims

1. laparoscope scalpel handle, it is characterized in that, comprise: closure casing, drive mechanism, trigger and output revolving shaft, wherein: drive mechanism is arranged in the inner space of closure casing, trigger is movably connected on the outer wall of closure casing, be respectively equipped with the pair of magnetic part on the input part of drive mechanism and the trigger and on efferent and the output revolving shaft, make that the active force on the trigger is passed to output revolving shaft in the noncontact mode.

2. handle according to claim 1 is characterized in that, two sides of described closure casing are provided with inside groove, and trigger is linked to each other respectively with two grooves by connector.

3. handle according to claim 1 and 2, it is characterized in that, described closure casing comprises: the loam cake of shape symmetry, lower cover and sealing strip, and wherein: loam cake and lower cover seal by ultrasonic bonding, and the outer periphery slit after the ultrasonic bonding is again by inserts injection moulding secondary seal.

4. handle according to claim 1, it is characterized in that, described drive mechanism comprises: gear, tooth bar and ball-screw nut, wherein: the correspondence position of gear and trigger arranges first magnetic part, one end of tooth bar and gear engagement, the other end and ball-screw nut engagement, the correspondence position of ball-screw nut and output revolving shaft arranges second magnetic part; Realize the contactless transmission of gear and trigger, ball-screw nut and output revolving shaft by first magnetic part and second magnetic part.

5. handle according to claim 4 is characterized in that, the spacing of described first magnetic part and second magnetic part is 2.3mm.

6. according to the described handle of above-mentioned arbitrary claim, it is characterized in that described magnetic part is neodymium iron boron, trade mark N50; This magnetic part is handled through face coat.

7. handle according to claim 6 is characterized in that, described face coat is for electroplating: nickel, zinc, gold or chromium or coating epoxy resin.