CN2422942Y

CN2422942Y - Active rotary cutting operating knife

Info

Publication number: CN2422942Y
Application number: CN 00205417
Authority: CN
Inventors: 王昆池
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-17
Filing date: 2000-02-17
Publication date: 2001-03-14
Anticipated expiration: 2010-02-17

Abstract

The utility model relates to the structure of an active rotary cutting operating knife. The utility model is provided with a pair of gun handle-shaped body case part and a small-sized motor, wherein, the small-sized motor is hidden and positioned on the in-line lower segment of the body case part; a hollow rotary cutting knife is driven to rotate to synchronously carry out the rotary cutting driving operation through the engaging of a bevel gear. The hollow rotary cutting knife of the utility model is directly controlled to start and close by a trigger part arranged under the gun handle-shaped body to avoid mistake switch touch. The utility model has the advantages of low friction, low shock and low noise and is in favor of improving the operation quality and reducing the cost.

Description

A kind of active rotary-cut scalpel

This utility model relates to a kind of active rotary-cut scalpel; especially a kind of so active rotary-cut scalpel; it utilizes and is concealed in the localized miniature motor of pikestaff type body shell portion hypomere in upright arrangement; directly turn its front end rotating shaft; order about the hollow rotary-cut cutter that radially is sleeved on pikestaff type body shell portion epimere, and have a movable trocar sheath that is enclosed within the peripheral protection of rotary-cut cutter.

Operative treatment is a most direct a kind of and effective method of removing the serious pathological changes of patient's affected part, is the medical skill that is widely adopted.But with progress of science and technology, traditional cutter type surgical instrument in the excision operation, is replaced by new instrument or modified model cutter in specific body just gradually.As see as shown in Fig. 1,2 that this rotary-cut scalpel 1 is widely used in endoscopic surgery or the resection operations such as other organs, polyp, it has the gripping shape of rifle type.

See also this Figure 1A, Figure 1B, Fig. 2 A, Fig. 2 B, habitual rotary-cut scalpel 1 mainly comprises: a rifle shell portion 11, include the hollow rotary-cut cutter 121 in stage casing, inner sleeve 122 and movable trocar sheath 123, constitute three-layer type shell-like cutter hub 12, inner sleeve 122 is that the fixed and front end of inner segment is than cutting edge 1211 retraction slightly, but outer section retraction of trocar sheath 123, stretch out, front end stretches out slightly than cutting edge 1211.Wherein, the inner segment place of hollow rotary-cut cutter 121, be socketed with one the location turn driven umbellate form tooth 13, utilize flank of tooth Vertical Meshing with it, drive umbellate form tooth 14 through its hypomere prolong serial connection turn central siphon 15, drive rotation with its central shaft 151, make hollow rotary-cut cutter 121 begin the high speed rotary-cuts.And the operator is before hollow rotary-cut cutter 121 beginning rotary-cuts (shown in Figure 1A, Figure 1B), promptly needing to pull backward with hand in addition draws pulling of a trocar sheath 123 to draw portion 1231, its pipe end is retired backward, and allow the front end cutting edge 1211 protruding (shown in Fig. 2 A, Fig. 2 B) of hollow rotary-cut cutter 121, and can carry out the rotary-cut operation.

This rotary-cutting type scalpel 1 turn power, mainly be from circumscribed power set 2, its device is beyond this rotary-cutting type scalpel 1 main body, and contain and start/close purposes pedal switch 21, utilize these power set 2 built-in motors (not drawing) to be connected in series with central siphon 15, drive a central shaft 151, drive rotation and be positioned at the driving umbellate form tooth 14 of end in addition, promptly rotary-cut cutter 121 carries out rotary-cut.And user is in operation during this rotary-cut scalpel 1, promptly needs simultaneously the mode with foot pedal switch 21, the rotary-cut of control cutter with stop.

Significantly turn central siphon 15 by one and be connected in series, and have the structure that power is external, slave mode turns feature, be actually and follow from dental electric drill mill utensil, both almost are close device and operator schemes.But what be different from dentistry is, be different from the narrow and small oral cavity of activity space to carry out medical treatment, and or not to amplify the making medical apparatus simply; So cause this rotary-cut scalpel 1 structure when the medical care precess of reality, the following operating barrier of inevitable often generation, and allow operation quality or efficient flaw occur:

What one, drive 121 rotary-cuts of rotary-cut cutter turns central siphon 15, though pliability is slightly arranged, but because of it includes rotating central shaft 151, and allow this central siphon 15 have suitable thickness and stiffness, stopping and obstacle between operator doctor and assistant when often causing operation technique.Even, move in the operator position or hand when moving rolling, stumbled by this central siphon 15, and then may pull operator person's operating position jointly, the danger that the operation process mistake is cut or accidentally injured takes place.The more important thing is: prolonging of this central siphon 15, directly have influence on the flexibility ratio of operation cutter 1 displacement, and the large tracts of land friction that in the pipe of strip, is caused during central shaft 151 rotation, will cause the vibrations and the noise phenomenon of central siphon 15, the operator is impacted, poor for applicability.

Two, the central shaft 151 that turns central siphon 15 is to drive rotation under the situation of long span continuously, when folding or smooth degree are not good if the allocation position of central siphon 15 takes place to break, the central shaft 151 of its inner segment promptly can't rotate smoothly, so will directly have influence on the rotating speed of rotary-cut cutter 121, even cause its lag switch in operation process, cause the pause of operation process or can't finish smoothly.

Three, remove to trample this pedal switch with the sole position, the operator must divert one's attention, and with starting or stoping of control rotary-cut cutter 121, when the skilled operation degree is not enough, through regular meeting the danger that startup opportunity is not good or false touch starts takes place.Four, thisly comprise that rotary-cutting type scalpel 1 is connected in series with circumscribed power set 2 and stage casing and turn central siphon 15 and be whole stationary installation, not only bigger at volume, and it is big based on central shaft 151 pipe internal friction, the configuration condition such as rear motor driving that need big torsion, cause its complete equipment on the high side, in addition, because the not replaceability of rotary-cut scalpel 1, can only be after each operation be finished, by the staff it is carried out disinfection, but when if sterilization has thoroughly slightly, the virus that cutter portion is infected with in the time of so promptly may taking place last time to perform the operation, next operator is caused infection, and its seriousness definitely can not be ignored.

The purpose of this utility model provides a kind of active rotary-cut scalpel, its utilization is concealed in the localized miniature motor of pikestaff type body shell portion hypomere in upright arrangement, directly drive its front end rotating shaft, order about the hollow rotary-cut cutter that radially is sleeved on pikestaff type body shell portion epimere and carry out rotary-cut operation and reach, the startup of hollow rotary-cut cutter with close, can directly control its rotary-cut operation at finger position, can avoid maloperation, overall volume is little, reduces cost, and improves medical effect.

For achieving the above object, a kind of structure of active rotary-cut scalpel, has a pair of pikestaff type body shell portion that covers relatively, the horizontal trepanning of top section of this shell portion, but include the hollow rotary-cut cutter in stage casing, inner segment is fixed and front end than cutting edge slightly retraction inner sleeve and the retraction of outer section, stretch out, and the movable trocar sheath that front end stretches out slightly than cutting edge, the cover system of formation three-layer type shell-like cutter hub; Wherein, trocar sheath stretches into the rear rear of trepanning, outer race at hollow rotary-cut cutter is provided with a ring-like compression spring, be butted between the middle interlayer of trocar sheath rear and shell portion, outside the trocar sheath normality being pushed shift to, and exceed hollow rotary-cut cutter front end cutting edge, and the inner segment place of hollow rotary-cut cutter, be equipped with a peripheral socket that utilizes bearing, can locate the driven umbellate form tooth of the conduction that is subjected to the rear rotary power of turn, a miniature motor, the Tibetan is put and is positioned at body shell portion hypomere in upright arrangement, wherein, the top gears engaged of this motor shaft is at an internal ring gear inner side edge, and the internal ring gear utilizes the stagnant hypomere internal ring gear inner side edge that is positioned two section steering bases of its top of bearing holder (housing, cover), pass through motor, be positioned at the umbellate form tooth of two section steering base epimeres, and be positioned at the driven umbellate form tooth that its top is the vertical angle engagement, turn hollow rotary-cut cutter and carry out rotary-cut synchronously;

One movable trocar sheath stretches out that locating stagnates and is connected to one and prolongs downwards and to have a trigger portion below the stage casing in the shell portion outside; The section rear, top of this trigger portion can rearward be moved when moving back being pulled, and extends shell portion inner segment symmetry place, the set touch switch front end movable contact that is used to connect motor power; Utilization is rearward detained when moving back pulling this trigger portion, moves after carrying trocar sheath simultaneously, outside hollow rotary-cut cutter front end cutting edge stretches out in, and at the last stroke place that the trigger portion button moves back, triggers the front end front contact of this touch switch in the lump.

Wherein, can increase serial connection to an on and off switch again at motor power line rear, it is interposed in the inboard location of shell subordinate section; Utilize the outer section of this on and off switch position to be convexly equipped with to be used to control and open or cut off the control button that infeeds power supply.

In addition, the inner face position of trigger portion can be provided with the guide groove that a cross section is the character cut in bas-relief shape, and with the geosynclinal block that provides a face to be arranged with relative shape, and side is provided with the brake silpper of pulling the portion of holding and embeds, and brake silpper can be done straight restriction of moving up and down; And via trigger portion inner face position and the upper and lower two section buckle salient points of brake silpper difference para-position setting and the configuration of pit, after brake silpper upwards being pulled move, can be stuck in the buckle point stop position of epimere, the stopping projection of its top section, fit and to be embedded to trigger portion top and recess position, shell portion outer rim the place ahead, form the discharge cock of preventing trigger portion to be pulled; And when brake silpper by backward shift downwards, and when being stuck in the buckle point stop position of epimere, stopping projection of its top section because of disengaging to the vertical block of trigger portion position system, trigger portion can be via being pulled operation backward.

The utility model has the advantages that, a kind of active rotary-cut scalpel is provided, wherein, the startup of hollow rotary-cut cutter with close, by the trigger position that is arranged on pikestaff type main body below, directly control its rotary-cut operation at finger position, the operator need not divert one's attention to note the foot-operated type switch of circumscribed, avoided operator's starting switch of anyone false touch rotary-cut cutter in addition, and because of active CD-ROM drive motor has reduced the torsion demand, and the multiple advantage of low friction, low vibrations, low noise is arranged, help the accuracy and the safety of operation technique.Remove from the structure bottom in addition serial connection turn central siphon, and the power supply device of receiving in addition that turns need not be arranged, whole group volume reduces, and may cause the operate miss in the operation process, and obtain conveniently, light and handy operating effect.Can reduce most structural cost costs significantly, for this reason, be about to it in each operation back and abandon, can avoid taking place the inadvertent contamination of operation next time fully, have excellent medical safety operating effect.

Description of drawings is as follows:

Figure 1A, Figure 1B are the combination generalized sections of habitual rotary-cut scalpel;

Fig. 2 A, Fig. 2 B are the generalized section of Fig. 1 when using the rotary-cut scalpel;

Fig. 3 is the three-dimensional arrangement of components figure that the shell portion of a kind of active rotary-cut scalpel that the utility model proposes partly separates;

Fig. 4 is the combination generalized section of a kind of active rotary-cut scalpel of utility model proposition;

Fig. 5 is the generalized section of Fig. 4 rotary-cut scalpel.

Please at first consult Fig. 3, shown in Figure 4: the structure of the active rotary-cut scalpel of this utility model mainly comprises: a pair of pikestaff type body shell portion 31,32 that covers relatively; The horizontal trepanning 3A of the top section of this shell portion 31,32, be provided with one and comprise the hollow rotary-cut cutter 51 in stage casing, inner sleeve 52, movable trocar sheath 53, constitute three-layer type shell-like cutter hub 5, inner sleeve 52 is the fixed and front end of inner segment than cutting edge 511 inner sleeve 52 of retraction slightly, but the 53 outer section retractions of movable trocar sheath, stretch out, and front end stretches out slightly than cutting edge 511.Wherein, trocar sheath 53 stretches into the rear rear of trepanning 3A, outer race at hollow rotary-cut cutter 51 is provided with a ring-like compression spring 531, be butted between the middle interlayer 3B of trocar sheath 53 rears and shell portion 31,32, outside trocar sheath 53 normalities being pushed shift to, and exceed hollow rotary-cut cutter 51 front end cutting edges 511, to form the protection of spreadability; And the inner segment place of hollow rotary-cut cutter 51 is equipped with a peripheral socket that utilizes bearing 4A, can locate the driven umbellate form tooth 4 of turn power, is accepted the conduction of rear rotary power whereby by this driven umbellate form tooth 4, to drive hollow cutting knife 51 dead axle rotary-cuts.

One miniature motor 6, the Tibetan is put and is positioned at body shell portion 31,32 hypomeres in upright arrangement, wherein, the top gear 61 of these motor 6 rotating shafts is engaged on an internal ring gear 71 inner side edges, this internal ring gear 71 utilizes bearing 7A cover to stagnate and locatees the hypomere of two sections steering bases 7 above it, utilizes the setting by motor 6, can be by being positioned at the umbellate form tooth 72 of two sections steering base 7 epimeres, and be the driven umbellate form tooth 4 of vertical angle bridle joint above it with the position, reach and turn hollow rotary-cut cutter 51 synchronous rotary-cuts and drive.

Above-mentioned movable trocar sheath 53, stretching out locates to stagnate below the stage casing in shell portion 31,32 outsides is connected to one and prolongs the trigger portion 9 that downwards, the section rear, top of this trigger portion 9, can rearward move when moving back being pulled, extend shell portion 31,32 inner segments symmetry place, the set touch switch 8 front end front contacts 81 that are used to connect motor 6 running power source supply ends.

Utilize this structure, after the operator stretches into patient's affected part with cutter hub 5, can rearward detain (as seeing also shown in Figure 5) when moving back pulling this trigger portion 9, after carrying trocar sheath 53 simultaneously, move, and make hollow rotary-cut cutter 51 front end cutting edges 511 extend, and detain the last stroke place of moving back at trigger portion 9, trigger the front end front contact 81 of this touch switch 8 in the lump, and make motor 6 begin moving the commentaries on classics, and relatedly turn hollow rotary-cut cutter 51, reach the handled easily of rotary-cut synchronously immediately.

Consult Fig. 3, Fig. 4, connect power line 61 rears that are located at motor 6, can increase serial connection to an on and off switch 62 again, it inserts and puts and is positioned at shell portion 31,32 hypomere inboards, utilize being convexly equipped with on these on and off switch 62 outer section positions, the control button 621 that infeeds power supply is opened or is cut off in control, and control provides the power supply before motor 6 entrys into service.

Consult Fig. 3, Fig. 4, the inner face position of trigger portion 9 can offer the guide groove 91 that a cross section is the character cut in bas-relief shape, be provided with the geosynclinal block 921 that a face is arranged with relative shape, and side is provided with the brake silpper 92 of pulling the portion of holding 922 and embeds, user is pulled this and one is pulled the portion of holding 922 by pinching, and can push away making brake silpper 92 do straight restriction of moving up and down; And via trigger portion 9 inner face positions and upper and lower two section buckle salient point 9A of brake silpper 92 difference para-positions settings and the configuration of pit 92A, can make brake silpper 92 upwards be pulled moves, and when being stuck in the buckle point stop position of epimere, the stopping projection 923 of its top section, fit and to be embedded to trigger portion 9 tops and recess position, shell portion 31,32 outer rim the place ahead, form the discharge cock (shown in Figure 4) of preventing trigger portion 9 to be pulled as seeing, also can't operate hollow rotary-cut cutter 51 runnings from and off switch 62 is unlocked this moment.

And pulled downwards and move when brake silpper 92, and when being stuck in the buckle point stop position of epimere, the stopping projection 923 of its top section is because of breaking away from trigger portion 9 vertical block position systems, trigger portion 9 can be via the operation of being pulled backward, and under the situation that on and off switch 62 is opened, operate hollow rotary-cut cutter 51 runnings.

Claims

1, a kind of structure of active rotary-cut scalpel, has a pair of pikestaff type body shell portion that covers relatively, the horizontal trepanning of top section of this shell portion, but include the hollow rotary-cut cutter in stage casing, inner segment is fixed and front end than cutting edge slightly retraction inner sleeve and the retraction of outer section, stretch out, and the movable trocar sheath that front end stretches out slightly than cutting edge, the cover system of formation three-layer type shell-like cutter hub; Wherein, trocar sheath stretches into the rear rear of trepanning, outer race at hollow rotary-cut cutter is provided with a ring-like compression spring, be butted between the middle interlayer of trocar sheath rear and shell portion, outside the trocar sheath normality being pushed shift to, and exceed hollow rotary-cut cutter front end cutting edge, and the inner segment place of hollow rotary-cut cutter, be equipped with a peripheral socket that utilizes bearing, can locate the driven umbellate form tooth of the conduction that is subjected to the rear rotary power of turn, it is characterized in that:

A miniature motor, the Tibetan is put and is positioned at body shell portion hypomere in upright arrangement, wherein, the top gears engaged of this motor shaft is at an internal ring gear inner side edge, the internal ring gear utilizes the stagnant hypomere internal ring gear inner side edge that is positioned two section steering bases of its top of bearing holder (housing, cover), by motor, by the umbellate form tooth that is positioned at two sections steering base epimeres, with be positioned at the driven umbellate form tooth that its top is vertical angle engagement, turn hollow rotary-cut cutter and carry out rotary-cut synchronously;

2, a kind of active rotary-cut scalpel according to claim 1 is characterized in that: can increase serial connection to an on and off switch again at motor power line rear, it is interposed in the inboard location of shell subordinate section; Utilize the outer section of this on and off switch position to be convexly equipped with to be used to control and open or cut off the control button that infeeds power supply.

3, a kind of active rotary-cut scalpel according to claim 1, it is characterized in that: the inner face position of trigger portion can be provided with the guide groove that a cross section is the character cut in bas-relief shape, to provide a face to be arranged with the geosynclinal block of relative shape, and side is provided with the brake silpper of pulling the portion of holding and embeds, and brake silpper can be done straight restriction of moving up and down; And via trigger portion inner face position and the upper and lower two section buckle salient points of brake silpper difference para-position setting and the configuration of pit, after brake silpper upwards being pulled move, can be stuck in the buckle point stop position of epimere, the stopping projection of its top section, fit and to be embedded to trigger portion top and recess position, shell portion outer rim the place ahead, form the discharge cock of preventing trigger portion to be pulled; And when brake silpper by backward shift downwards, and when being stuck in the buckle point stop position of epimere, stopping projection of its top section because of disengaging to the vertical block of trigger portion position system, trigger portion can be via being pulled operation backward.