CN1095258A

CN1095258A - Scalpel

Info

Publication number: CN1095258A
Application number: CN 93105752
Authority: CN
Inventors: 布鲁斯·德伯希尔
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-14
Filing date: 1993-05-14
Publication date: 1994-11-23

Abstract

The contractile scalpel of a kind of blade comprises a blade, and an elasticity foam and constitutes the elongated cover of blade housing region.When the elasticity foam was exerted pressure, blade was longitudinally moved and is reached use location outside the cover.As long as there is pressure to be applied on the elasticity foam, blade just can remain on outside the cover always.

Description

Scalpel

The present invention relates to the contractile safety locking motion of a kind of blade, the scalpel that particularly a kind of surgery is used.

Medical personnel have virus spread curing some, are for example infected easily during the patient of HIV (human immunodeficiency virus), so doctor and other medical personnel must put on one's gloves in the process of carrying out various professional activities.In addition because the surgeon is difficult to avoid not touching patients'blood, so he (she) be in dangerous condition especially.

As medical personnel during at the manipulate surgical scalpel, the contractile safety locking motion of the blade of prior art helps to reduce the danger that some medical personnel emit.The operating mechanism that is used for the prior art of blade retractable device comprises slide button (U.S. patent No.4,320,576), slide spare (U.S. patent No.4 with thumb press, 233,734), the operating mechanism of pencil or ball pen type (U.S. patent No.4,337,576 and 4,663,846), rotating cylinder (U.S. patent No.4,730,613), housing of Yi Donging or cover (U.S. patent No.4,393,587 and 4,414,974) and (the U.S. patent No.4 of mechanism that a radial force is converted to axial force, 757,612).

Yet for the surgeon, there is the another one difficulty in the device of this prior art, and the doctor who promptly has on surgical glove is difficult to operate this device.And the slidably switch of the operating mechanism of prior art, particularly thumb press and pen type operating mechanism also can produce the danger that may puncture or tear surgical glove in use.

Therefore, the object of the present invention is to provide the contractile safety locking motion of a kind of blade, or other similar cutter sweeps, it adopts an elasticity foam as handling or actuator, when the elasticity foam is compressed, blade can be released from the insurance cover.

Another object of the present invention is to provide a kind of surgeon's easy-to-operate blade contractile scalpel, and does not have the danger that damages surgical glove and other similar protective clothings.

For this purpose, the present invention includes a blade, an elasticity foam, and the elongated cover of a formation blade housing region.

Elongated cover plays the effect of a handle of a knife, and comprises an elastomer, and its from the cover one and a plurality of opening exposes.Elasticity foam and opening are placed on the appropriate location, and when holding handle of a knife with convenient user, his (she) one finger and/or thumbtip can touch the elasticity foam at least.When the elasticity foam is exerted pressure, blade vertically reaches from elongated cover outside the cover for use.

The pressure that is applied on the elasticity foam makes it produce distortion, thereby makes blade be forced out the zone that holds blade of elongated cover.As long as there is pressure to be applied on the elasticity foam, blade just remains on outside the cover.

Below in conjunction with accompanying drawing the present invention is done a more detailed description, wherein,

Fig. 1 is the longitdinal cross-section diagram of a scalpel of the present invention;

Fig. 2 is along another longitdinal cross-section diagram that becomes 2-2 among Fig. 1,

Fig. 3 is the view similar with Fig. 2, the scalpel of use that the expression blade extends;

Fig. 4 is the cross-sectional view along Fig. 2 center line 4-4;

Fig. 5 is the sketch map of a kind of design of elasticity foam;

Fig. 6 is the view similar with Fig. 5, there is shown the elasticity foam that is in deformed state.

Fig. 1-4 shows and comprises that an elongated cover 12, is equipped with elasticity foam 14, one pistons, 18, one springs 20 of fluid 16 and the contractile scalpel 10 of blade of the present invention of a blade 22.Cover 12 plays a part handle, and it comprises available traditional approach, and for example: what screw 28 and dovetail 30 linked together goes up cover 24 and trap 26.The blade housing region 32 of blade 22 is held in cover 12 formation one, and one holds elasticity foam 14, the foam housing region 34 of piston 18 and spring 20.In this preferred embodiment, fluid 16 is a kind of disinfectant liquid.

The head 36 of piston 18 is supporting elasticity foam 14, and the other end 38 of piston is connected on the blade 22.Shown in Fig. 1-2, scalpel is the time spent not, and spring 20 forces piston 18 to leave blade housing region 32, so blade 22 indentation and being contained in the zone 32 safely, 36 are being tight against elasticity foam 14.

Fig. 3 represents to constrain in the elasticity foam 14 in the zone 34, when when manipulator surface 40 applies a pressure, elasticity foam 14 produces deformation and overcomes the power of spring 20 and force piston 18, thereby also forces blade 22 to vertically move, thereby blade 22 moves on to the position of stretching out cover 12 outsides.As shown in Figure 4, when scalpel time spent not, control surface 40 fully laterally exposes outside the cover 12, like this, by user control surface 40 is applied a lighter power, and blade 22 just can easily move on to its position of stretching out fully.

Fig. 5-6 shows the another kind of structure 14 ' of elasticity foam, and it has the protuberance 42 of the bellows-type of discounting structure, and when when control surface 40 ' applies a pressure, it can easily be entered the position that is meshed with piston 18 heads 36 by expansion.

Claims

1, the collapsible cutter sweep of a kind of blade, it comprises:

One constitutes the elongated cover of a blade housing region and a foam housing region;

One can and stretch out the blade that moves back and forth at the punctured position in the described blade housing region between the extended position of described cover outside;

Be enclosed in the elasticity foam in the described foam housing region partially, fluid be housed in the described foam and have the control surface that at least one can touch from the outside of described cover; And

It comprises the piston that is connected with described blade and can is made it to mesh by described elasticity foam one actuating device, when described control surface is applied a pressure, described piston is driven by described foam, makes described blade leave described punctured position and arrives described extended position.

2, device as claimed in claim 1, wherein, it is liquid that described elasticity is steeped intravital fluid.

3, device as claimed in claim 1, wherein, described elasticity foam comprises a dozen folding part branches, when described control surface was applied a pressure, it can stretch out.

4, device as claimed in claim 1, wherein, described actuating device also comprises can make described blade be withdrawn into elastic device in the described blade housing region when removing described pressure.

5, the contractile cutter sweep of a kind of blade, it comprises:

Constitute a handle of a knife and form the elongated cover of a blade housing region in inside;

One blade assembly comprises that one is mounted to and can and reaches the blade that moves between the extended position of described cover outside from described blade housing region at the punctured position in the described blade housing region; And

One its by fluid being housed and being arranged in the cover elasticity foam near described blade means, described foam has a control surface that can touch from described cover outside, wherein, in response to the pressure that is applied on the described control surface, described foam can be out of shape and contact described blade assembly, thereby shifts described blade onto described extended position.

6, device as claimed in claim 5, wherein, it is liquid that described elasticity is steeped intravital fluid.

7, device as claimed in claim 5, wherein, described elasticity foam comprises a dozen folding part branches, it can stretch out when described control surface is exerted pressure.

8, device as claimed in claim 5, wherein, described device comprises that also one can make described blade be returned to the elastic device of described punctured position after pressure is removed.