CN1019376B - Blade removal and/or manting mechanism and dispenser, extractor-disposal a apparatus - Google Patents

Abstract

A mechanism for attaching and dismounting a blade having an elongated hole to a handle having a mounting boss, having a handle guide forming one side of the channel for inserting the handle, and having a portion of the flexible body sufficient to deflect the handle from the blade . There is blade removal means forming a second side of the channel, and a blade retaining extension is provided adjacent the channel, actuatable to prevent withdrawal of the blade from the channel. There is also an actuating device, which actuates the dismounting device with the deflection of the handle of a knife to disengage the boss from the elongated hole. The blade can be removed when the handle is withdrawn from the channel. The device in combination with the blade holding and/or disposal receptacle can be used as a blade dispensing and/or disposal device.

Description

The present invention relates to the dispensing and disposal of cutting blades, and in particular to a blade removal and/or installation mechanism for providing convenient storage, dispensing and disposal of cutting blades which can be The slotted hole and the boss are installed on the handle.

As is well known in the art of cutting, single-use blades, such as surgical scalpel blades, are available in several sizes, in sterile or non-sterile packaging, and are constructed to fit conventional metal scalpel handles of various sizes All kinds of knives are used for various purposes in hospitals, research laboratories, scientific departments of schools and universities, etc. Regarding applications in hospitals, such blades are used in surgery, pathology laboratories, and the like. Typically, commercially available surgical blades have a pointed tip, a cutting edge portion and a shank extending back from the edge. The handle of the blade has an elongated hole with a certain shape, which is suitable for placing the front end of the handle of the scalpel or connecting the elongated matching boss formed on the top.

In general, the elongated bore of the blade for engagement with the handle may have a widened rear portion and a narrowed front portion, the wide rear portion initially receiving the engagement boss of the scalpel handle leading the boss forward into the hole The narrowed front. The boss is recessed laterally so that the edge of the narrowed front portion of the hole is engaged between the scalpel handle and the recessed side surface of the boss. When the boss is fully inserted into the blade hole, the rear edge of the blade hole can snap over the rear of the engaging boss, thus forming a locking engagement between the blade and the scalpel handle.

In order to remove this blade from the scalpel handle, the rear end of the blade must be separated from the handle to disengage the rear end of the blade hole from the rear end of the boss, and the blade can then be pushed forward until there is a side recess A portion of the boss exits the narrowed front of the blade hole, allowing the blade to come off the handle.

A sharp edge is essential when performing surgical operations. But during this procedure, the blade loses its sharpness (purifies) very quickly, and usually several blades are used in one procedure. Thus, during surgical procedures, removal of the used blade from the handle and replacement with a new sterile blade is a frequent occurrence.

The structure and operation of attaching and detaching the scalpel blade from the handle are problematic, and the operator is prone to injury when attaching and detaching such a sharp blade. Accordingly, it has been known in the past to provide means for removing the blade which does not require manual access to the blade.

For example, US 3,172,316 issued to Gries haber proposes a blade removal tool made of tube with an elongated handle. It is slightly flattened at one end to provide opposing flat surfaces on which two opposing channel-like grooves are formed, the grooves being opposed to the boss portion of the scalpel handle when the tool and scalpel boss portion are assembled. Acts as a guide rail. Extending longitudinally from a flat at the flat end of the handle are two spaced apart prongs that slope slightly upward. The spacing between the prongs is such that the elongated boss portion of the scalpel handle can pass through, with the free ends of each prong being offset upwardly. The blade end of the scalpel handle can initially be inserted longitudinally between the channel-like grooves through the flat open end of the tube. The eccentric ends of the tool prongs are in sliding engagement with the underside of the blade until they engage behind the innermost end of the adjacent shank of the blade. The inclination of the two prongs biases the innermost portion of the mating blade upwardly, thereby causing the ends of the blade to clear the elongated boss portion of the scalpel handle when the scalpel is withdrawn longitudinally from the flat end of the tool. The blade of the scalpel handle is held in place by the eccentric end of the prong when the handle is withdrawn.

U.S. Patent 4,180,162 issued to Magney proposes a combined delivery-disposal cartridge (Cartidge) for surgical blades comprising an elongated open-top box containing the blade and Means for placing the blade in a curved position to accept the engaging bosses of the scalpel handle. The case also contains means for removing the used blade from the handle and keeping it inside the case for disposal. The blade is housed in a box so that the blade bends and stretches from the front end to the distal end, which facilitates the insertion of the handle boss into the elongated slot, which then moves it forward, together with the blade mounted on the handle Pull out the upper blade together. To remove the blade from the handle, insert the handle into the hole end of the box until the tip of the blade engages between the side wall and the projection extending down from the top of the box, at which point the handle is moved to the right, The rear end of the blade is removed from the narrow front portion of the handle by engagement of an upstanding blade removal extension integral with the box floor. Makeni's release-disposal combination chucks sometimes fail during use, causing the surgeon or assistant to resort to manually removing the blade from the handle.

Other devices comprising dissecting blade removers are proposed in U.S. Patent 4,378,624 by Klingenberg, which includes a fixed seat combined with a second movable seat with a groove between the two seats, and the movable seat There is a protrusion on the blade, which engages one end of the blade and moves it relative to the cutter body to remove it from the handle. The two seats are installed on the support surface, and a sterilized disposal box is arranged below the support surface.

U.S. Patent No. 4,318,743 issued to Sandel (Sandel) proposes a surgical blade removal and disposal device that operates by inserting the handle with the blade through a guide so that the rear of the blade is disposed in a spaced apart On the shoulder, the handle is then pressed down in an attempt to bend the blade, which disengages the rear portion of the handle insertion portion from the rear edge of the blade pocket, allowing the handle to move relative to the blade. Due to the friction between the blade and handle, the blade tries to move with the handle until the blade hits the front wall of the stop, which stops the blade from moving further back. One of the problems encountered with the Sandel blade removal device is that the blade is subjected to severe flexing as it engages the spaced shoulders to guide the blade toward the rear stop. This causes a lot of frictional resistance between the insert pocket and the handle boss, making removal of the insert very difficult.

U.S. Patent 4,344,532 issued to Eldridge (Eldridge, Jr.) et al. discloses a surgical blade remover in which a wedge-shaped support is tapered from its front side to its back side, the The support has one or more mutually parallel latitudinal slots open at one end, extending from the front side of the support along their length towards the inside thereof. The slot is sized to accommodate the tang of the blade holder, but prevents the blade itself from passing therethrough, and the surfaces of the supports adjoining the slot are coated with an adhesive to hold the blade in place while the shank rests in the slot. The center is turned down and away from the blade. In certain embodiments, the slots shown have a varying profile shape to match the shape of the blade and/or are provided with cutouts to accommodate a portion of the handle to assist in removal of the blade.

U.S. Patent No. 4,120,397 to Neumann proposes a device for receiving a disposable blade-like article in which the underside of the blade, such as a scalpel blade, is in sliding engagement with an upwardly deflected resilient tongue member . The tongue member is provided with camming, the surface of which can be pushed against the blade, lifting the rear of the blade slightly from the handle boss. Once the tongue member is fully depressed, thus deflecting the rear of the blade downward, the scalpel handle can be unloaded, placing the rear of the blade against the inner surface of the wall, thus slightly lifting the blade from the boss and The blade is removed from the handle.

U.S. Patent No. 4,106,620 issued to Brimmer et al. proposes a surgical blade delivery and disposal assembly comprising a plurality of blades individually positioned and supported within a box between slots in the front wall and Between the slot holes of the rear wall, the rear wall clamps the blade in such a way that the blade is slightly deformed according to lateral bending, and is used to place the boss of the scalpel handle in the elongated hole of the blade body. The blade is removed by inserting the handle holding the blade into the hole and wedging back against the lug. The handle is then moved across, separating the rear of the blade from the boss and completely removing the handle from the blade. This arrangement has proven to be inconvenient and the removal instrument does not provide effective removal of the blade.

Accordingly, it is an object of the present invention to provide a scalpel dispenser which allows quick and easy installation of a scalpel blade to a scalpel handle.

Another object of the present invention is to provide a dissecting blade remover that facilitates easy removal of the blade from the handle.

Another object of the present invention is to provide a scalpel dispenser housing which provides quick and easy access to various scalpel blades.

Corresponding to the foregoing objects of the invention, it is a further object to provide a device which allows easy identification of stored blades.

Another object of the present invention is to provide safe storage of scalpel blades during surgical procedures.

Another object of the present invention is to facilitate the safe disposal of used contaminated scalpel blades.

Another object of the present invention is to enable the counting which is normally carried out at the end of a surgical operation to be carried out quickly and accurately.

Other objects of the present invention will become clearer to those skilled in the art from the following disclosure of the present invention.

The invention comprises a mechanism for mounting and dismounting a blade having an elongated slot mounting means to and from a knife handle having a mounting boss inserted into the elongated slot. The mechanism includes a shank guide which forms one side of the passage for insertion of the shank. The shank guide has a flexible body portion flexible enough to deflect the shank to extract and disengage the boss from the blade elongate slot. Another element of the mechanism is the blade removal device, which is mounted on the opposite side of the handle guide and forms the second side of the channel. The removal device has a blade retaining extension disposed adjacent the channel that can be actuated to prevent the blade from being withdrawn from the channel. The mechanism also includes actuating means mounted to actuate the blade removal means in response to deflection of the handle sufficiently to disengage the boss from the elongated slot. As a result, when the handle is withdrawn from the passage, the removal means is actuated and the blade mounted on the handle can be removed from the handle.

The mechanism of the present invention may also include a blade receptacle for holding the blade in place for mounting on the handle and for housing the blade when it is in use. Additionally, the receptacle can be used as a disposal receptacle when the mechanism is only used as a blade removal mechanism. When it is intended to provide a blade-dispensing instrument, the receptacle may also contain a blade support to hold the blade in the mounted position while storing the cutting edge of the blade.

Referring to the individual elements of the mechanism, the blade removal device comprises a flexible arm, starting from a position at one end of the channel and extending along the channel towards an operative end. The blade retention extension is mounted on the operative end in a position out of the passageway in the unactuated state, and can be pulled through the passageway when actuated. The actuating means comprises a locking hook means fixed to eg a handle guide, the locking hook means comprising a yoke extending around the channel and a yoke projection extending around the blade removal hook arm. Thus, when the shank guide is deflected away from the blade remover, the protrusion is pulled into contact with the arm. Alternatively, the shackle arrangement can be secured to the blade removal arm with the yoke extending around the channel and the yoke protruding Extends around the shank guide. The yoke projections extend around the arm or shank guide a distance therebetween sufficient to allow the shank to be inserted into the channel without actuating the actuator arm.

The mechanism may be contained within the housing to provide a combined blade delivery and disposal instrument. Each housing can contain more than one mechanism. The housing may be a sterilizable transparent container in which the blades are visibly enclosed and sterilizable. The reclosable cover may be formed over the blade opening with a weakened portion connecting it to one side of the housing and the opening on the other side for articulation over the blade. The instrument preferably contains at least four blades for use in the field of operation.

It has been found that the height of the device is preferably about 2 to 2 3/4 inches, the length is about 3 to 4 inches, and the base width is about 1 3/4 to 2 3/4 inches. Adhesive is provided on the underside to hold the instrument in place during use.

By means of the present invention, the medical team can quickly and easily access various scalpel blades within the instrument, which utilizes mechanical mounting and dismounting, allowing safe manipulation of the blades as required. Blades can be identified as new or used, and the instrument allows for quick and accurate blade inventory at the end of surgery, as well as safe storage and disposal of used scalpel blades.

In another embodiment, the present invention may be used to provide a blade disposal container incorporating the above-described mechanism for removing the blade from the handle.

For a clearer understanding of the present invention and other objects, please refer to the following description taken in conjunction with the accompanying drawings. The scope of the present invention will be indicated in the claims.

For purposes of description, the preferred embodiment of the present invention has been selected and shown in the accompanying drawings, which are illustrated as follows:

Figure 1 is a perspective view of a blade delivery and disposal device according to the present invention;

Figure 2 is a perspective view of a handle with a blade;

Figure 3 shows the relationship between the blade and the handle in the disassembled state;

Figure 4 is a perspective view of the operating mechanism of the present invention with the scalpel blade shown in dashed lines to illustrate the relationship between the blade and the mechanism;

Fig. 5 is a side sectional view along line 5-5 of the apparatus shown in Fig. 1;

Figure 6 is an exploded isometric view of the handle guide and shackle assembly of the operating mechanism;

Figure 7 is an exploded isometric view of the blade hook assembly portion of the mechanism;

Figure 8 is a perspective view of another embodiment of the operating mechanism of the present invention;

Figure 9 is a partial side sectional view of the instrument shown in Figure 1, showing the operation of the cover plate and blade use indicator sheet;

Figures 10 and 11 show the steps involved in mounting the blade on the handle;

Figure 12 shows the operation of the mechanism for removing the blade from the handle;

Fig. 13 is another embodiment of the instrument used as blade removal and disposal of the present invention;

Figure 14 is a cross-sectional view of the embodiment shown in Figure 13 taken along line 14-14.

To the extent possible, the same reference numerals have been used to designate the same parts in the various drawings. Referring to Fig. 1, it can be seen that an instrument for packaging a set of blades, such as scalpel blades, made in accordance with the present invention, is used for mounting the blades on a scalpel handle, and for removing the blades from the handle after use and cleared away. The instrument shown in Figure 1 has five blades that can be packaged, sterilized, and shipped to the workplace for selection by the team. The dispenser may have a transparent housing 11 to allow the surgeon or assistant to easily see the different sizes and types of blades.

Figures 2 and 3 show the relationship between the scalpel blade and the knife handle, Figure 2 is its assembled state, and Figure 3 is its disassembled state. Referring to these figures, it can be seen that the elongated hole 51 of the blade 50 has a reduced size portion 53 and an enlarged portion 52 . It is also known that the hole size of the elongated holes can be varied in three stages rather than the two stages shown in FIG. 3 .

The elongated front portion 57 of the illustrated handle 55 is provided with a peripheral mounting slot 59 . The peripheral mounting groove 59 may be formed in the configuration of a raised boss 56 with sides recessed into the peripheral groove 59 . The boss 56 protrudes outward from the front end 57 . Referring specifically to FIG. 3, a partially cutaway portion of the boss 56 is shown. In order to install the blade 50 on the handle 55 , the raised boss portion 56 must be aligned with the enlarged portion 52 of the elongated hole 51 and pushed forward so that the whole of the raised boss 56 is inserted into the elongated hole 51 . The narrowed portion 53 of the elongated hole 51 and the peripheral groove 59 interengage to secure the blade 50 to the handle 55 . It should be noted that when fine When the rear enlarged portion 52 of the slotted hole 51 descends over the rear portion of the raised boss 56 and cooperates to bite each other, the blade is fixed on the handle of a knife.

Referring to FIG. 4, in the operating mechanism, ie, the actuating means, of the present invention shown in the figure, the blade 50 is shown in dashed lines. Referring simultaneously to Figures 6 and 7, the various elements of the operating mechanism are shown in exploded isometric views. Specifically, the operating mechanism comprises a handle guide assembly 20 having a base frame 21 which may be part of a molded base, and an upper handle guide 22 having a guide surface 26 . The knife handle guide assembly 20 is fixed in the housing 11, opposite to the blade hook removal assembly 30, forming one side of the blade and knife handle channel.

The blade hook removal assembly 30 includes a housing support portion 31 and a leg 32 extending upwardly to a blade removal hook 37 having a blade removal surface 34 .

The third part of the operating mechanism of the present invention is a locking mechanism such as a locking hook assembly 40 rigidly connected to the handle guide 22 by a yoke such as a locking bar 41 and continuously encircling the blade passage by a latch extension 42 . At one end of the latch extension 42 is a yoke protrusion such as a shackle 43 that extends around the leg 32 at a distance "f" from the leg 32 to allow the handle guide assembly 20 to be offset by a distance. Just enough to allow the top of the handle to insert into the channel for the blade to fit.

FIG. 8 shows another embodiment of the present invention in which the hook assembly 40 ′ is rigidly connected to the blade removal hook 30 instead of the handle guide assembly 20 . Those parts of the reconfiguration of the structure shown in Figure 8 are indicated with primed references to indicate that they have the same function but different configurations.

Referring to FIG. 5, a side sectional view taken along line 5-5 of the instrument shown in FIG. 1 shows the interrelationship of the operative portion of the mechanism with the housing. This figure shows the blade resting on the blade platform 18 which includes the blade support extension 19 . The position of the support extension 19 on the platform 18 is such that the blade rests thereon at portion "s" (see FIG. 4). Site "s" are largely unused during surgery, eg, usually between the blade point and the cut "belly".

Other features of the invention are embodied in the best mode. Cover plate 12 is preferably provided with living chain 13, and cover plate can lift back (see Fig. 9) to use finger to be positioned at directly above the blade of package. The display sheet 14 is exposed. In operation, when the handle is inserted to install the blade, the blade use indicator tab 14 is pressed downwards, caught between the converging shoulders 15 provided by the housing, so that, once depressed, the blade's The usage is memorized by the sheet kept down.

Figures 10 and 11 show the operation of installing the blade on the handle. Specifically, in FIG. 10, the front portion 57 of the handle 55 is pushed down, pushing the blade use indicator tab 14, into the passageway between the handle guide assembly 20 and the blade hook removal assembly 30. . Referring now to FIG. 11 , it can be seen that the handle has been engaged with the elongated hole 51 of the blade 50 . The depressed sheet 14 is held in the depressed state by the friction fit between the converging shoulders 15 . Due to the distance "f" between the leg 32 and the locking hook 43, the handle guide assembly can be deflected to a certain extent without the actuating blade hooking the removal assembly 30. Once the blade has been secured to the front 57 of the handle 55, the entire handle and blade assembly can be removed vertically from the mechanism.

Disassembly of the blade from the handle will be described with reference to FIG. 12 . The handle and blade assembly can be reinserted into the channel between the handle guide assembly 20 and the blade hook removal assembly 30 by permanently depressing the opening provided by the tab 14 . Once the blade is fully inserted into the channel, the handle 55 can be shifted away from the blade hook removal assembly 30 in the direction of the handle guide assembly 20 , ie to the right in FIG. 12 . As a result of the deflection, the shank 55 hits the upper guide 22, thereby pushing the shank guide assembly, together with the shackle assembly 40 rigidly connected thereto, out of the channel. The hook 43 then moves a distance "f" to meet behind the leg 32 of the blade hook removal assembly 30, pushing it through the passage, as shown in FIG. When the handle of a knife was deviated from the passage, the rear portion of the raised projection 56 left the rear portion of the elongated hole 51 simultaneously, so that the handle of a knife could be disengaged from the blade. In this mechanism, disengagement refers to pulling the handle vertically upwards away from the channel, under the conditions shown in Figure 12, causing the top end of the blade 50 to collide with the blade removal surface 34, thereby preventing the blade from being lifted up the channel. It should be noted that in order to disengage the boss 56 from the hole 51 and at the same time actuate the blade removal assembly, it is only necessary to offset the handle slightly from the blade so that only the narrowing portion 53 of the blade elongated hole 51 and the recess of the boss 56 A minimum amount of frictional resistance is added between the peripheral grooves 59 . Like this, as a result of the actuation of blade removal assembly 30 and the low-friction fit state of blade 50 on the mounting boss 56, the handle of a knife can be easily withdrawn from the blade. out and remove without touching the blade itself.

Referring to Fig. 13, there is shown another embodiment of the present invention which can only be used as a disposal instrument for removing and storing used blades. Specifically, the instrument 70 shown in the figure has a cover plate 71, which can be rotated backward from the top of the instrument 70 as shown by the dashed line in FIG. 14 . Once the cover plate is opened, the knife handle and the blade assembly can be operated in the entire insertion mechanism as shown in Figure 13, and the blade is removed. Additionally, in the configuration shown in Figures 13 and 14, blade retaining posts 72 may be provided within receiving receptacles 74 for retaining blades in a close stack therein.

In preferred embodiments, when the housing is made of a transparent material, the disposed blades are easily counted for accounting purposes after the surgical procedure. Additionally, as noted above, in embodiments, the combined housing components may have an adhesive bottom 16 to hold the housing components securely in place during blade installation and blade removal. Dispensing instruments with new blades can optionally be covered with sterile masking material and can be sterilized using ethylene oxide, radiation, or the like.

While the foregoing has described what is presently considered to be the best embodiment of the invention, those of ordinary skill will appreciate that changes and modifications may be made to the embodiment without departing from the spirit of the invention. All such changes and modifications that fall within the true scope of the invention are therefore required to be claimed.

Claims (14)

1, a kind of with a slice have the blade of elongated slotted apertures erecting device, to the mechanism that a handle of a knife with the installation base that inserts above-mentioned elongated slotted apertures is installed and blade dismantled from the handle of a knife, it is characterized in that it comprises:

Blade jack is held in place above-mentioned blade so that be installed on the above-mentioned handle of a knife, and puts above-mentioned blade at blade after above-mentioned handle of a knife unloads;

The handle of a knife guide, constitute a side of the passage that enters above-mentioned jack, so that above-mentioned handle of a knife is inserted, above-mentioned handle of a knife guide has the flexible body part, its flexible foot so that above-mentioned handle of a knife be offset by above-mentioned blade, intermesh so that above-mentioned boss is inserted above-mentioned elongated slotted apertures, perhaps with above-mentioned boss by extracting jump out of mesh out in the above-mentioned elongated slotted apertures

Blade disassembled equipment, be installed in the offside of above-mentioned handle of a knife guide, it has formed second side relative with above-mentioned handle of a knife guide of above-mentioned passage, above-mentioned stripping assembly has the blade that is close to above-mentioned passage and disposes and keeps extension, this extension can be actuated, to prevent that blade is drawn out of in above-mentioned jack

Actuation gear, its installation are used for actuating above-mentioned blade disassembled equipment according to the skew of above-mentioned handle of a knife, be enough to above-mentioned boss jump out of mesh relation from above-mentioned elongated slotted apertures,

Therefore, when above-mentioned handle of a knife when above-mentioned passage is extracted out, the blade that is installed on the above-mentioned handle of a knife is just kept extension to bite so that dismantle by above-mentioned blade.

2, according to the mechanism of claim 1, it is characterized in that above-mentioned blade disassembled equipment also comprises flexing arm, position by contiguous above-mentioned jack begins, extend to an operating side along above-mentioned passage, above-mentioned blade keeps extension to be installed in the aforesaid operations end making it be in the position of leaving above-mentioned passage not actuating under the dress attitude, and make it when being actuated, can be pulled through above-mentioned passage, thereby prevent that above-mentioned blade from being removed from above-mentioned passage.

3, according to the mechanism of claim 2, it is characterized in that above-mentioned actuation gear comprises latch hook device, be connected with one of them of above-mentioned handle of a knife guide and above-mentioned blade disassembled equipment, above-mentioned latch hook device comprises the york piece that extends around above-mentioned passage and around the york piece projection of wherein one the extension of above-mentioned blade removal hook arm and above-mentioned handle of a knife guide, therefore, when above-mentioned handle of a knife guide during from the skew of above-mentioned blade disassembled equipment, above-mentioned projection is pulled, and contacts with above-mentioned arm one of them with above-mentioned handle of a knife guide.

4, according to the mechanism of claim 3, it is characterized in that above-mentioned york piece projection around the extension of one of above-mentioned arm and above-mentioned handle of a knife guide, has a distance therebetween, be enough to make above-mentioned handle of a knife insertion and can not actuate above-mentioned arm by above-mentioned passage.

5, according to the mechanism of claim 1, it is characterized in that above-mentioned jack comprises blade supporting member, supporting member along a position of above-mentioned blade with insert supporting one for the erection position of installing, and usefulness the part of cutting sword of above-mentioned blade is hidden firmly.

6,, it is characterized in that this mechanism's installation is in the enclosure to provide blade granting and treatment instrument according to the mechanism of claim 1.

7,, it is characterized in that above-mentioned shell is transparent, wherein has more than one said mechanism according to the mechanism of claim 6.

8,, it is characterized in that this mechanism is crested and sterilization according to the mechanism of claim 7.

9, a kind of blade that a slice is had an elongated slotted apertures erecting device has the mechanism that dismantles for the handle of a knife of the installation base that inserts above-mentioned long slot bore from one, it is characterized in that it comprises:

The handle of a knife guide, a side of the passage of above-mentioned handle of a knife is inserted in formation, and above-mentioned handle of a knife guide has the flexible body part, and its flexible foot is so that above-mentioned handle of a knife offsets above-mentioned blade, and jump out of mesh concerns so that above-mentioned boss is extracted out by above-mentioned elongated slotted apertures,

Blade disassembled equipment, be installed in the offside of above-mentioned handle of a knife guide, formed second side relative of above-mentioned passage with above-mentioned handle of a knife guide, above-mentioned stripping assembly has the blade that is close to above-mentioned passage and disposes and keeps extension, this extension can be actuated, to prevent that blade is drawn out of in above-mentioned passage

Actuation gear, its connection are used for actuating above-mentioned blade disassembled equipment according to the skew of above-mentioned handle of a knife, be enough to above-mentioned boss jump out of mesh relation from above-mentioned elongated slotted apertures,

Therefore, when above-mentioned handle of a knife when above-mentioned passage is extracted out, the blade that is installed on the above-mentioned handle of a knife is nibbled so that dismantle by above-mentioned maintenance extension.

10, according to the mechanism of claim 9, it is characterized in that above-mentioned blade disassembled equipment also comprises flexing arm, position by contiguous above-mentioned jack begins, extend to an operating side along above-mentioned passage, above-mentioned blade keeps extension to be connected the aforesaid operations end, make it not be in the position of leaving above-mentioned passage under the activated state, and make it when being actuated, can be pulled through above-mentioned passage, thereby prevent that above-mentioned blade from being removed from above-mentioned passage.

11, according to the mechanism of claim 10, it is characterized in that above-mentioned actuation gear comprises latch hook device, be connected with one of them of above-mentioned handle of a knife guide and above-mentioned blade disassembled equipment, above-mentioned latch hook device comprises york piece that extends around above-mentioned passage and the york piece projection of dismantling one of them extension of hook arm and above-mentioned handle of a knife guide around above-mentioned cutter, therefore, when above-mentioned handle of a knife guide is offseted by above-mentioned blade disassembled equipment, above-mentioned projection is pulled, and contacts with above-mentioned arm one of them with above-mentioned handle of a knife guide.

12, according to the mechanism of claim 11, it is characterized in that above-mentioned york piece projection around the extension of one of above-mentioned arm and above-mentioned handle of a knife guide, has a distance therebetween, be enough to make above-mentioned handle of a knife insertion and need not actuate above-mentioned arm by above-mentioned passage.

13,, it is characterized in that this mechanism is mounted in the enclosure, so that the blade granting and the treatment instrument of combination to be provided according to the mechanism of claim 9.

14,, it is characterized in that above-mentioned shell is transparent, wherein has more than one said mechanism according to the mechanism of claim 13.

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