CN209548524U - A kind of fixed device of medical instrument - Google Patents

Abstract

The utility model discloses a kind of fixed devices of medical instrument, including lock washer and place tool, the washer matrix of lock washer has fixed arm and lock arm, two lock arms keep pretightning force by elastomer, to clamp the medical instrument being placed in skull, and two lock arms all have force transmission hole；Two fixed arms are located at the outside of corresponding lock arm, to realize the fixation of lock washer；Place tool includes two folding arms that can be realized open and close movement, and the front end of any folding arm has the force-transmitting pole to insert scarf conjunction with force transmission hole；After two force-transmitting poles cooperate with each force transmission hole respectively and two folding arms open, two lock arms can overcome the pretightning force of elastomer to open, and loosen the clamping to medical instrument.The fixed device of above-mentioned medical instrument can increase the spacing between two lock arms of lock washer, and then easily the medical instruments such as electrode are fixed under the action of two folding arms of place tool open.

Description

A kind of fixed device of medical instrument

Technical field

The utility model relates to Implanted medical system technical field, in particular to a kind of fixed device of medical instrument.

Background technique

Lesions located in deep brain system belongs to implantable nerve stimulating system one kind, and main includes the pulse generation to implant Device, electrode and external control device.Electrode is connected with impulse generator, and the pulse that impulse generator generates is passed to Specific nerve position generates electro photoluminescence, to restore the normal function of human body of corresponding site.Patient performed the operation in implant electrode Cheng Zhong, doctor passes through the target position that 3 D stereo positioning device determines patient's brain first, according to target position suitable Bone hole is outputed at skull position, and electrode wires are inserted into corresponding target position by bone hole and are tested, the ideal situation of effect Under electrode will be fixed on this position with electrode fixing device.With lesions located in deep brain System Development, to plant in operation The positioning accuracy request for entering brain electrode is higher and higher, and better position precision can improve surgical effect and aftertreatment effect Stability.

In the lesions located in deep brain electrode implant surgery of early stage, the easy fixed electrode of fixed device is generallyd use, with one Electrode wires are extruded in the slot of base side wall by the bone hole lid of a silica gel, play fixed effect；Or titanium is used above bone hole The fixed a piece of titanium plate of nail, electrode is bundled in titanium plate with sutures.Although these common practices can play fixed electrode Effect, but will cause the biggish displacement laterally or vertically of electrode in fixation procedure, influence surgical effect, or performing the operation Electrode still has the space moved in skull in a period of time afterwards, and postoperative effect over time is caused to be deteriorated.

Summary of the invention

For above-mentioned technical problem in the prior art, the purpose of the utility model is to provide a kind of fixed dresses of medical instrument It sets, may be implemented to be accurately positioned.

To achieve the above object, the utility model provides a kind of fixed device of medical instrument, comprising:

It position can relatively-stationary lock washer；The lock washer includes being wholely set and disc-shaped washer matrix, The washer matrix has fixed arm and lock arm, and two lock arms keep pretightning force by elastomer, put to clamp The medical instrument being placed in skull, and two lock arms all have force transmission hole；Two fixed arms are located at respective correspondence The lock arm outside, to realize the fixation of the lock washer；

Place tool can be realized the folding arm of open and close movement including two, and the front end of any folding arm, which has, to be used To insert the force-transmitting pole that scarf closes with the force transmission hole；When two force-transmitting poles respectively with each force transmission hole cooperation and two institutes After stating folding arm opening, two lock arms can overcome the pretightning force of the elastomer to open, and loosen the folder to medical instrument It holds.

Preferably,

Two folding arms extend along axis, and the inner edges of the two folding arm opposite sides form and extend along axis Gap, the middle part of two inner edges form the short slot towards outside；

The place tool further includes being located at the upper and lower ends of the two folding arms and capable of synchronizing in the axial direction The switch upper cover of movement and folding control portion；The folding control portion includes two appearances being located on the outside of the two folding arms Na Bi and lower covers positioned at the two folding arm lower ends, the two receiving walls are connected with the lower cover；The switch upper cover with The lower cover alternatively is equipped with folding island, and the folding island extends along axis, and front end is described scarce with that can be housed inside Plush copper between slot, its rear end have the contracting tail that can be housed inside between the gap；

When the switch upper cover is mobile towards front end, the plush copper and the contracting tail be located at the short slot with it is described In gap, the two folding arms keep initial position；When the switch upper cover is mobile towards rear end, the plush copper is detached from institute Short slot is stated, is located in the gap, the gap becomes larger, and the two folding arms open.

Preferably, the place tool further includes the handle extended along axis, and the two folding arms are fixed on the handle； It is additionally provided with elastic portion between the two folding arms, one end of the elastic portion is butted on the handle, and the other end is butted on the folding The rear end on island；The upper surface of the handle is additionally provided with the holding section to the fixation switch upper cover position；

When the switch upper cover is mobile towards rear end, the elastic portion is compressed, and the switch upper cover can be clamped In the holding section, the two folding arms open；When the holding section is detached from the switch upper cover, the elastic portion stretching, extension, Push the folding control portion and the switch upper cover to initial position.

Preferably, the holding section includes extending and can be realized elastically-deformable elastic slice along axis, before the elastic slice End upper surface has the card slot for being clamped the switch upper cover, and the rear end of the elastic slice and the handle are integrally formed, and institute Stating between the front end of elastic slice and the handle has with for the elastic slice vertical space that deformation occurs；It is described when pressing downwards When the front end of elastic slice, the holding section can be detached from the switch upper cover.

Preferably, also there is the transition part extended along axis, the transition part is by preceding between the plush copper and the contracting tail To rear tapered.

Preferably, the two sides of the plush copper are equipped with the limiting slot being radially recessed, the short slot have to it is described The retention bead that limiting slot matches, to realize that the folding island is fixed relative to the short slot.

Preferably, the front end of any folding arm has gradually turn of bilge diagonally downward, and the gradually bottom end of turn of bilge described in two It is equipped with the horizontal ledge to be in contact with the washer matrix, two force-transmitting poles are vertically arranged at each water respectively The front end of plano-convex platform.

Preferably, the place tool further includes being set to the handle, sticking up bar to tilt the lock washer Portion, the both ends stuck up bar portion and be respectively arranged on the handle with the two folding arms.

Preferably, the bar portion of sticking up includes being connected with the handle and along the interconnecting piece that axis extends, and the interconnecting piece is remote One end from the handle has gradually bent-up end diagonally downward, and the end of the gradually bent-up end has tip.

Preferably, the handle, described stick up bar portion and the two folding arms are integrated setting.

Relative to above-mentioned background technique, the fixed device of medical instrument provided by the utility model utilizes the biography of place tool Power column is matched with the force transmission hole of lock washer, under the action of two folding arms of place tool open, so that two power transmissions Spacing between column becomes larger, so that the spacing of two force transmission holes of lock washer be become larger, increases by two lockings of lock washer Spacing between arm, and then easily the medical instruments such as electrode are fixed, brain deep electricity thorn is improved in the fixed link of electrode Swash the success rate of operation, improves surgical effect.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 is the structural schematic diagram of the fixed device of medical instrument provided by the utility model embodiment；

Fig. 2 is the schematic diagram of the fixed device of medical instrument in use in Fig. 1；

Fig. 3 is schematic diagram of the fixed device of medical instrument by medical instrument after fixed in Fig. 1；

Fig. 4 is the structural schematic diagram of the lock washer of the fixed device of medical instrument in Fig. 1；

Fig. 5 is the schematic diagram of another angle of lock washer in Fig. 4；

Fig. 6 is the bottom view of lock washer in Fig. 4；

Fig. 7 is the structural schematic diagram of the spring of lock washer in Fig. 4；

Fig. 8 is the exploded view of the place tool of the fixed device of medical instrument in Fig. 1；

Fig. 9 is the sectional view of the place tool of Fig. 8；

The place tool that Figure 10 is Fig. 8 opens schematic diagram when bone hole lid；

Figure 11 is the schematic diagram of another place tool of the fixed device of medical instrument in Fig. 1；

Figure 12 is the exploded view of the place tool of Figure 11；

Figure 13 is schematic diagram of the folding arm of place tool in Figure 11 in closure；

Figure 14 is schematic diagram of the folding arm of place tool in Figure 11 when opening；

Figure 15 is the partial schematic diagram of the switch upper cover of place tool and folding control portion in Figure 11；

Figure 16 is the cross-sectional view of Figure 15；

Figure 17 is the schematic diagram that place tool does not install switch upper cover and folding control portion in Figure 11.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically The utility model is described in further detail for embodiment.

Fig. 1 to Figure 17 is please referred to, Fig. 1 is that the structure of the fixed device of medical instrument provided by the utility model embodiment is shown It is intended to；Fig. 2 is the schematic diagram of the fixed device of medical instrument in use in Fig. 1；Fig. 3 is that the medical instrument in Fig. 1 is solid Determine schematic diagram of the device by medical instrument after fixed；Fig. 4 is that the structure of the lock washer of the fixed device of medical instrument in Fig. 1 is shown It is intended to；Fig. 5 is the schematic diagram of another angle of lock washer in Fig. 4；Fig. 6 is the bottom view of lock washer in Fig. 4；Fig. 7 is Fig. 4 The structural schematic diagram of the spring of middle lock washer；Fig. 8 is the exploded view of the place tool of the fixed device of medical instrument in Fig. 1； Fig. 9 is the sectional view of the place tool of Fig. 8；The place tool that Figure 10 is Fig. 8 opens schematic diagram when bone hole lid；Figure 11 is Fig. 1 In the fixed device of medical instrument another place tool schematic diagram；Figure 12 is the exploded view of the place tool of Figure 11；Figure 13 be schematic diagram of the folding arm of place tool in Figure 11 in closure；Figure 14 is that the folding arm of place tool in Figure 11 is being opened When schematic diagram；Figure 15 is the partial schematic diagram of the switch upper cover of place tool and folding control portion in Figure 11；Figure 16 is Figure 15 Cross-sectional view；Figure 17 is the schematic diagram that place tool does not install switch upper cover and folding control portion in Figure 11.

The fixed device of medical instrument provided by the utility model mainly includes lock washer 2 as shown in Figure of description 1 With place tool 3, the pick-and-place to lock washer 2 can be realized by hand-held place tool 3, to clamp using lock washer 2 Or loosen medical instrument；Wherein, medical instrument can be electrode 200, as shown in Figure of description 2.

Lock washer 2 can be fixed by bone hole pedestal 1 relative to skull, structure such as Figure of description 4 to 7 institute of attached drawing Show, including disc-shaped washer matrix 20, washer matrix 20 is provided with the fixed arm 21 positioned at two sides, between two fixed arms 21 There are two lock arms 22 for tool；20, two fixed arms 21 of washer matrix and two lock arms 22 are wholely set, two lock arms 22 Between have to the gap 26 that clamps medical instrument, gap 26 is formed by the opposite side of two lock arms 22 along 221, and two A lock arm 22 keeps pretightning force by elastomer 23, and the ends of two lock arms 22 has a deformation hole 28, deformation hole 28 and Gap 26 is connected to, to realize the opening and tightening of two lock arms 22.The front end in gap 26 is also provided with guide groove 27, with convenient The medical instruments such as electrode 200 smoothly import in gap 26, so that convenient clamp it.

The periphery of axial restraint in order to ensure lock washer 2 relative to bone hole pedestal 1, the lock washer 2 is equipped with energy It is enough to be matched with the border of bone hole pedestal 1, to avoid the step surface 25 that the lock washer 2 is axially moveable, as specification is attached Shown in Fig. 4；Rotation stop pawl 24 can also be arranged in washer matrix 20, and lock washer 2 is avoided to rotate relative to bone hole pedestal 1, such as explanation Shown in book attached drawing 3.It is possible thereby to lock washer 2 is fixed relative to bone hole pedestal 1, and can be between bone hole pedestal 1 and skull It is fixed by skull nail 4, while deformation slot 12 can also be arranged in the inside of skull nail 4, use is so that bone hole pedestal 1 fits closely In the curved surfaces of skull；After the medical instruments such as electrode 200 are clamped by two lock arms 22, bone hole pedestal 1 can be placed in Guiding groove 10 in, realize electrode 200 position fix.The fixed device of the medical instrument of the utility model can be set two and be in The angle of the line of the extended line of vertical distribution guiding groove 10 namely two guiding grooves 10 is 90 °, in this way being capable of power pole selection The guiding groove 10 for being suitble to it to fix；It, can be by guiding groove 10 and lock arm for the angle between guiding groove 10 and lock arm 22 22 angle setting is in 90 °, the angle of the two can also be set greater than 45 °, so set, inevitable in two guiding grooves 10 There are a guiding grooves 10 can consolidate holding electrode, surgical effect is improved, as shown in Figure of description 3.

Elastomer 23 is paperwrapped in the outside of two lock arms 22, and elastomer 23 can be integral the components such as spring, and two The structures such as mounting groove 222 can be set in the outside of lock arm 22, realize the fixation to elastomer 23.

Wherein, elastomer 23 can be in U-shape, as shown in Figure of description 7 comprising two adjutages 231 are located at two institutes It states the top of adjutage 231 and the tightening portion 232 that extends towards relative direction and is located at two 231 bottoms of adjutage and by two institutes State the connected connection bottom 233 of adjutage 231；The connection bottom 233 has tightening force, to realize two adjutages 231 Pretightning force is kept with the two tightening portions 232；

The structure of mounting groove 222 is as shown in Figure of description 4 comprising:

The outside that is respectively arranged on two lock arms 22, the pockets to accommodate two adjutages 231 respectively 2221；

It is connected to two pockets 2221, to the buckle 2222 of the fixation connection bottom 233；

The positive stop end being displaced set on any pockets 2221, to limit each described tightening portion 232 respectively 2223；Any positive stop end 2223 includes circumferential end faces 22231 and radial end face 22232, to limit each institute respectively State the circumferentially displaced and radial displacement in tightening portion 232.

There is accommodation space 29, to realize the opening and receipts of lock arm 22 between adjacent fixed arm 21 and lock arm 22 Tightly；Two fixed arms 21 positioned at 20 outside of washer matrix play positioning action；At the same time, two lock arms 22 all have biography Power hole 220, force transmission hole 220 can be through-hole or counterbore etc..

On above-mentioned basis, the root of two fixed arms 21 and two lock arms 22 is equipped with axially extending bore 201, With to avoid 20 stress of washer matrix concentration；And the axially extending bore 201 is located at the deformation hole 28 far from the card slot 26 side, as shown in Figure of description 5.

As shown in Figure of description 8 to attached drawing 17, place tool 3 includes two folding arms 31, and two folding arms 31 can Realize open and close movement；Each folding arm 31 all has a force-transmitting pole 32, and each force-transmitting pole 32 can be with a force transmission hole 220 slotting scarves close, and after two folding arms 31 open, two lock arms 22 can overcome the pretightning force of elastomer 23 to open, from And loosen the clamping to medical instruments such as electrodes 200.

Two folding arms 31 extend along axis, and have along the gap that axis extends 310, and the gap is by two folding arms The inner edge of 31 opposite side is formed, and the middle part formation short slot 311 of two sides inner edge namely two sides inner edge are raised outward.

Place tool 3 further includes switch upper cover 33 and folding control portion 34, switchs upper cover 33 and folding control portion 34 is removable Connection is unloaded, can be moved synchronously along gap 310 after the two connection；Wherein, folding control portion 34 includes two receiving walls 341, The bottom of two receiving walls 341 connects lower cover 342, and lower cover 342 and two receiving walls 341 form concave structure, two folding arms 31 a part is received wherein.It switchs upper cover 33 or 34 alternatively of folding control portion is equipped with folding island 343, specification is attached Fig. 8 and attached drawing 9 show the situation that folding control portion 34 is equipped with folding island 343, and Figure of description 12 shows switch upper cover 33 Situation equipped with folding island 343 opens and closes the overall structure on island 343 as shown in Figure of description 15.

In order to realize the connection of switch upper cover 33 and folding control portion 34, the attached body 12 of reference book is it is found that switch upper cover 33 can be equipped with the first connecting pin 330, and two receiving walls 341 in folding control portion 34 can be equipped with second connection end 340, and first Connecting pin 330 and second connection end 340 can realize that switch upper cover 33 and folding are controlled using mutual clamping or by the way of fastening The connection in portion 34 processed.

No matter it is equipped with which component folding island 343 is set to, extends along axis, and front end has plush copper 3431, rear end tool There is contracting tail 3432, as shown in Figure of description 16；Plush copper 3431 can be housed inside between short slot 311, and contracting tail 3432 can be by It is contained in gap 310；In use, two force-transmitting poles 32 are inserted in a force transmission hole 220 respectively, switch upper cover 33, folding control portion 34 is moved synchronously with folding island 343, when three is synchronous mobile towards front end (towards the direction of force-transmitting pole 32) When, plush copper 3431 and contracting tail 3432 are located in short slot 311 and gap 310, and two folding arms 31 keep initial position, at this time Preset spacing is kept between two folding arms 31, and between the spacing and two force transmission holes 220 between two force-transmitting poles 32 Spacing is identical (in the case where elastomer 23 is not affected by external force)；When three is mobile towards rear end (direction of principle force-transmitting pole 32) When, plush copper 3431 is detached from short slot 311, it is located in gap 310, so that gap 310 becomes larger namely two folding arms 31 open, The spacing between two force-transmitting poles 32 becomes larger at this time, and two force transmission holes 220 overcome the pretightning force of elastomer 23 and spacing becomes larger, from And the gap 26 between two lock arms 22 becomes larger, the medical instruments such as electrode 200 are loosened in realization, such as Figure of description 13 With shown in attached drawing 14.

Place tool 3 further includes the handle 35 extended along axis, and two folding arms 31 are fixed on handle 35, two folding arms Elastic portion 36 is equipped between 31, elastic portion 36 can be linear spring, and one end of elastic portion 36 is butted on handle 35, the other end It is butted on the rear end on folding island 343, as shown in Figure of description 8 and attached drawing 9；The upper surface of handle 35 is additionally provided with to be switched to fixed The holding section 351 of 33 position of upper cover；In use, when switching upper cover 33 towards when the movement of rear end, elastic portion 36 is compressed, And switch upper cover 33 can be connected in holding section 351,

Two folding arms 31 open, namely plush copper 3431 is detached from short slot 311 at this time, is located in gap 310, and gap 310 become larger, and two force transmission holes 220 overcome the pretightning force of elastomer 23 and spacing becomes larger, thus by between two lock arms 22 Gap 26 becomes larger, and the medical instruments such as electrode 200 are loosened in realization.When holding section 351, which is separated from, shuts lid 33, elastic portion 36 Stretching, extension pushes folding control portion 34 and switch upper cover 33 to initial position, and plush copper 3431 is located at scarce with contracting tail 3432 at this time In slot 311 and gap 310, two folding arms 31 keep initial position, keep preset spacing between two folding arms 31 at this time.

For the set-up mode of holding section 351 comprising extend along axis and can be realized elastically-deformable elastic slice, it should The front end of elastic slice can generate downwards deformation, and front end upper surface has the multiple groups card slot 3511 for snap-action switch upper cover 33, The rear end of elastic slice and handle 35 are integrally formed, as shown in Figure of description 9；Wherein, between the front end of the elastic slice and handle 35 With to for the elastic slice vertical space 3512 that deformation occurs；In use, holding section 351 is connected in switch upper cover 33 Under the premise of, when pressing the front end of spring plate downwards, holding section 351, which can be separated from, shuts lid 33, at this time the bullet of elastic portion 36 Property potential energy release, drive switch upper cover 33, folding control portion 34 with open and close 343 three of island synchronize travel forward so that plush copper 3431 are located in short slot 311 and gap 310 with contracting tail 3432, and two folding arms 31 keep initial position, open for two at this time It closes and keeps preset spacing between arm 31.

For folding island 343, transition part 3433, transition part 3433 are also provided between plush copper 3431 and contracting tail 3432 Extend along axis, and tapered from front to back, as shown in Figure of description 16；Open and close the cunning that island 343 opens and closes between arm 31 at two It is more smooth during dynamic, the pause and transition in rhythm or melody of sliding is avoided, the convenient of operation is improved.

It is capable of fixing between two folding arms 31 to make to open and close island 343, is opened with ensuring that two folding arms 31 are in State, the utility model are equipped with limiting slot 3434 in the two sides of plush copper 3431, and two limiting slots 3434 are radially recessed；Simultaneously Short slot 311 has retention bead 3111, such as Figure of description 17；When opening and closing island 343 towards nose motion, limiting slot 3434 blocks In short slot 311, the position that island 343 opens and closes arm 31 relative to two is opened and closed at this time and is fixed, so that two folding arms 31 Open configuration is kept, two lock arms 22 of lock washer 2 keep the state loosened to medical instruments such as electrodes 200, conveniently hold Row corresponding operating.

It is equipped with diagonally downward gradually for the front end of one end of force-transmitting pole 32 in place tool 3, each folding arm 31 Turn of bilge 312, as shown in Figure of description 9, two gradually turn of bilge 312 be equipped with horizontal ledge 313, the bottom of each horizontal ledge 313 End has force-transmitting pole 32 in front.In use, the bottom surface of horizontal ledge 313 fits with washer matrix 20, and force-transmitting pole 32 insert in the force transmission hole 220 of lock arm 22, and then increase the contact area of place tool 3 Yu lock washer 2, improve The stability of clamping.

For the other end of place tool 3, bar portion 37 can be stuck up equipped with what is be connected with handle 35, it can using bar portion 37 is stuck up Lock washer 2 is tilted from bone hole pedestal 1, as shown in Figure of description 8 to attached drawing 12；Wherein, bar portion 37 is stuck up to open with two Close the left and right ends that arm 31 is located at handle 35.

Sticking up bar portion 37 includes interconnecting piece 371 and gradually bent-up end 372, and interconnecting piece 371 is located at handle 35 and gradually between bent-up end 372, Gradually the end of bent-up end 372 diagonally downward, and gradually the end of bent-up end 372 have tip 373, complete tilting movement.Gradually bent-up end 372 with Gradually turn of bilge 312 is bent diagonally downward, and the bending angle of the two can be consistent.

The handle 35 of place tool 3 is stuck up bar portion 37 and two folding arms 31 and can be made of integrated molding mode, all Such as injection molding, 3D printing mode.

It should be noted that in the present specification, such as first and second etc relational terms are used merely to one Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual Relationship or sequence.

The fixed device of medical instrument provided by the utility model is described in detail above.Tool used herein Body example is expounded the principles of the present invention and embodiment, and the above embodiments are only used to help understand The method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not taking off Under the premise of from the utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification It also falls into the protection scope of the utility model claims.

Claims (10)

1. a kind of fixed device of medical instrument characterized by comprising

It position can relatively-stationary lock washer (2)；The lock washer (2) includes being wholely set and disc-shaped washer base Body (20), the washer matrix (20) have fixed arm (21) and lock arm (22), and two lock arms (22) pass through elastomer (23) pretightning force is kept, to clamp the medical instrument being placed in skull, and two lock arms (22) all have power transmission Hole (220)；Two fixed arms (21) are located at the outside of corresponding lock arm (22), to realize the lock Determine the fixation of washer (2)；

Place tool (3) can be realized the folding arm (31) of open and close movement, the front end of any folding arm (31) including two With to insert the force-transmitting pole (32) that scarf closes with the force transmission hole (220)；When two force-transmitting poles (32) respectively with each institute After stating force transmission hole (220) cooperation and two folding arms (31) openings, two lock arms (22) can overcome the elastomer (23) pretightning force is opened, and the clamping to medical instrument is loosened.

2. the fixed device of medical instrument according to claim 1, which is characterized in that

The two folding arms (31) extend along axis, and the inner edge of two described folding arm (31) opposite sides forms and prolongs along axis The gap (310) stretched, the middle part of two inner edges form the short slot (311) towards outside；

The place tool (3) further include be located at two it is described folding arm (31) upper and lower ends and can be in the axial direction The switch upper cover (33) moved synchronously and folding control portion (34)；The folding control portion (34) includes two and is located at two institutes It states the receiving wall (341) on the outside of folding arm (31) and is located at the lower cover (342) of two described folding arm (31) lower ends, two appearances Na Bi (341) is connected with the lower cover (342)；The switch upper cover (33) and the lower cover (342) alternatively are equipped with folding Island (343), the folding island (343) extend along axis, and front end is convex between the short slot (311) with that can be housed inside Head (3431), its rear end have the contracting tail (3432) that can be housed inside between the gap (310)；

When the switch upper cover (33) is mobile towards front end, the plush copper (3431) and the contracting tail (3432) are located at institute It states in short slot (311) and the gap (310), the two folding arms (31) keep initial position；When the switch upper cover (33) When mobile towards rear end, the plush copper (3431) is detached from the short slot (311), is located in the gap (310), the gap (310) become larger, the two folding arms (31) are opened.

3. the fixed device of medical instrument according to claim 2, which is characterized in that the place tool (3) further includes edge The handle (35) that axis extends, the two folding arms (31) are fixed on the handle (35)；Between the two folding arms (31) also Equipped with elastic portion (36), one end of the elastic portion (36) is butted on the handle (35), and the other end is butted on the folding island (343) Rear end；The upper surface of the handle (35) is additionally provided with the holding section (351) to described switch upper cover (33) position of fixation；

When the switch upper cover (33) is mobile towards rear end, the elastic portion (36) is compressed, and the switch upper cover (33) It can be connected in the holding section (351), the two folding arms (31) are opened；When the holding section (351) are detached from the switch When upper cover (33), the elastic portion (36) stretching, extension pushes the folding control portion (34) and the switch upper cover (33) to initial Position.

4. the fixed device of medical instrument according to claim 3, which is characterized in that the holding section (351) includes along axis Line extends and can be realized elastically-deformable elastic slice, and the front end upper surface of the elastic slice has for being clamped the switch upper cover (33) card slot (3511), the rear end of the elastic slice and the handle (35) are integrally formed, and the front end of the elastic slice with it is described Have between handle (35) with for the elastic slice vertical space that deformation occurs；When pressing the front end of the elastic slice downwards, The holding section (351) can be detached from the switch upper cover (33).

5. the fixed device of medical instrument according to claim 4, which is characterized in that the plush copper (3431) and the contracting tail (3432) also there is the transition part (3433) extended along axis, the transition part (3433) is tapered from front to back between.

6. the fixed device of medical instrument according to claim 4, which is characterized in that the two sides of the plush copper (3431) are all provided with There is the limiting slot (3434) being radially recessed, the short slot (311) has the limit to match with the limiting slot (3434) Position is raised (3111), to realize that the folding island (343) is fixed relative to the short slot (311).

7. according to the fixed device of medical instrument described in claim 3 ~ 6 any one, which is characterized in that any folding arm (31) front end has gradually turn of bilge (312) diagonally downward, and described in two gradually the bottom end of turn of bilge (312) be equipped with to it is described The horizontal ledge (313) that washer matrix (20) is in contact, two force-transmitting poles (32) are vertically arranged at each level respectively The front end of boss (313).

8. the fixed device of medical instrument according to claim 7, which is characterized in that the place tool (3) further includes setting It is placed in the handle (35), stuck up bar portion (37) to tilt the lock washer (2), it is described to stick up described in bar portion (37) and two Folding arm (31) is respectively arranged on the both ends of the handle (35).

9. the fixed device of medical instrument according to claim 8, which is characterized in that it is described stick up bar portion (37) include with it is described Handle (35) is connected and along the interconnecting piece (371) that axis extends, the one end of the interconnecting piece (371) far from the handle (35) With gradually bent-up end (372) diagonally downward, and the end of the gradually bent-up end (372) has tip (373).

10. the fixed device of medical instrument according to claim 9, which is characterized in that the handle (35) described sticks up bar portion (37) and the two folding arms (31) are integrated setting.