CN209529905U - A kind of fixed device of medical instrument - Google Patents

Abstract

The utility model discloses a kind of fixed devices of medical instrument, including base handle, the base handle has the hand-held ontology being in the form of a column, and the two sides positioned at the hand-held ontology, the armlet to place skull nail, the armlet has by the putting hole of the upper tapered setting under, and the putting hole has elasticity；When to downward coupling mechanism force is applied positioned at the putting hole mesocrany bone nail, the putting hole can open, to realize that skull nail moves downward.The fixed device of above-mentioned medical instrument, the locking process of skull nail is more steady, reduces the influence to surgical effect, improves the success rate of lesions located in deep brain operation in the fixed link of electrode, improves surgical effect.

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, including base handle, the bottom Seat handle has the hand-held ontology being in the form of a column, and the two sides positioned at the hand-held ontology, the armlet to place skull nail,

The armlet has by the putting hole of the upper tapered setting under, and the putting hole has elasticity；When to positioned at institute When stating putting hole mesocrany bone nail and applying downward coupling mechanism force, the putting hole can open, to realize that skull nail moves downward.

Preferably, the top of the putting hole is additionally provided with anti-is disengaged from the groove with what is fallen off to avoid skull nail.

Preferably, the axis of two putting holes inclines on from lower direction close to the axis direction of the hand-held ontology Tiltedly.

Preferably, the putting hole further includes positioned at the anti-bone nail slot for being disengaged from the groove lower section and inner wall smooth.

Preferably, the sidewall bottom of the hand-held ontology have being capable of flexible deformation, the elastic wall to be clamped medical instrument.

Preferably, multiple elastic walls are distributed in the bottom of the hand-held ontology, and any elastic wall in petaloid Two sides all have and extended upwards along axis by the bottom of the hand-held ontology and the deformation slot that is parallel to each other, it is any to realize The flexible deformation of the elastic wall.

Preferably, all the elastic wall constitutes the elastic wall group of at least two groups diametrically, and the different elastic walls The diameter of circumference where group is different.

Preferably, the base handle includes two handle half-shells that can be engaged by clamping, and two handle half-shells are matched The base handle is formed after conjunction；Wherein, each described handle half-shell all has hand-held ontology half-shell and two armlets half Shell.

Preferably,

The hand-held ontology half-shell is in cavity structure, and the both sides of the edge of the hand-held ontology half-shell are respectively equipped with public buckle With master card button, the public buckle and the master card button can mutually be engaged by clamping；The inside top of the cavity structure has edge The stop bit bone radially extended；It is respectively equipped with up and down on the outside of the difference armlet half-shell of the same hand-held ontology half-shell The first different fastener of position；

When the two hand-held ontology half-shells are engaged by clamping, the two stop bit bones are radially bonded, upper and lower position it is different two First fastener is mutually clamped up and down, and the public buckle and the master card button are mutually engaged by clamping, and form the pedestal Handle；

Wherein, there is the precompression after clamping between two first fasteners up and down of the same armlet, and It, then up and down will not between two first fasteners when two different first fasteners of upper and lower position are mutually clamped up and down There is gap；

When the skull nail for being located at the armlet is moved downward along the direction of the putting hole, then upper and lower two described first block It is not in gap between stop；

When the skull nail for being located at the armlet is not moved along the direction of the putting hole, then two first locking up and down It will appear seam between portion.

Preferably, the public buckle is set to the inside of the cavity structure comprising groove and be set to the groove and The second fastener extended along the axis direction of the hand-held ontology；

The master card button includes the elongated end extended to the groove direction and is connected with the elongated end, can extend into The groove and the embedded part being mutually clamped with second fastener.

Relative to above-mentioned background technique, the fixed device of medical instrument provided by the utility model, using in base handle By it is upper under tapered setting putting hole, can be realized skull nail position fix, while in view of putting hole have elasticity, when to When skull nail in putting hole applies downward coupling mechanism force, putting hole can open, to realize that skull nail moves downward.Such as The locking process of this setting, skull nail is more steady, reduces the influence to surgical effect, improves brain deep in the fixed link of electrode The success rate of electro photoluminescence 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 schematic diagram of the fixed device of medical instrument provided by the utility model embodiment in use；

Fig. 2 is the structural schematic diagram of the base handle in Fig. 1；

Fig. 3 is the structural schematic diagram of the handle half-shell of base handle in Fig. 2；

Structural schematic diagram when Fig. 4 is the fixed device of medical instrument and bone hole cooperation in Fig. 1；

Fig. 5 is the structural schematic diagram of another angle of Fig. 4；

Fig. 6 is the partial enlargement diagram at the position A in Fig. 5.

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 Fig. 6 is please referred to, Fig. 1 is that the fixed device of medical instrument provided by the utility model embodiment was using Schematic diagram in journey；Fig. 2 is the structural schematic diagram of the base handle in Fig. 1；Fig. 3 is the handle half-shell of base handle in Fig. 2 Structural schematic diagram；Structural schematic diagram when Fig. 4 is the fixed device of medical instrument and bone hole cooperation in Fig. 1；Fig. 5 is the another of Fig. 4 The structural schematic diagram of one angle；Fig. 6 is the partial enlargement diagram at the position A in Fig. 5.

The fixed device of a kind of medical instrument provided by the utility model, including base handle 2, base handle 2 can be with bones Hole pedestal 1 is used cooperatively, and bone hole pedestal 1 is fixed on skull 400 to realize, as shown in Figure of description 1.

Wherein, bone hole pedestal 1 is for being placed in the bone hole 410 of skull 400, such as Figure of description 4 and 5 institute of attached drawing Show.Bone hole pedestal 1 is in the form of annular discs, and the axial through-hole 11 having through its upper and lower end face, the two sides of bone hole pedestal 1 are respectively equipped with nail Hole 10.

Base handle 2 includes the hand-held ontology 21 being in the form of a column, and holds ontology 21 and is arranged on from lower flaring, is located at and holds this The bottom end of body 21 is equipped with buckle 210, and buckle 210 is raised outward relative to the surface of hand-held ontology 21, to be clamped bone hole bottom The through-hole 11 of seat 1；That is, bone hole pedestal 1 is temporarily fixed to the bottom of base handle 2 when buckle 210 is connected in through-hole 11 End grasps hand-held ontology 21 with hand, the positioning to bone hole pedestal 1 can be completed.

The two sides of hand-held ontology 21 are equipped with armlet 22, and two armlets 22 are symmetrically disposed on the axis two of hand-held ontology 21 Side；Armlet 22 can be placed with skull nail 4；In use, it is clamped through-hole 11 using buckle 210, realizes bone hole pedestal 1 and bottom The fixation of seat handle 2, and a skull nail 4 is put into each armlet 22；Made by grasping simultaneously mobile base handle 2 Bone hole pedestal 1 is placed on appropriate location, which can be with are as follows: through-hole 11 is located in 410 range of bone hole, and nail hole 10 is located at bone Except 410 range of hole, and it is in the two sides of bone hole 410.Each at this time skull nail 4 is located exactly at the top of each nail hole, Skull can be followed closely 4 on from lower screw-in nail hole 10 using corresponding tool, and realize and bone hole pedestal 1 is fixed on skull 400 Operation.

Skull nail 4 is placed in armlet 22 in order to realize, each armlet 22 is equipped with putting hole 221 by the utility model, often One putting hole 221 is by the upper tapered setting under, and the inner sidewall of putting hole 221 has elasticity；When a skull nail 4 is placed in one It is larger in view of the ailhead section of skull nail 4 when in a putting hole 221, and the nail body of skull nail 4 by it is upper under it is tapered, therefore only When under the effect of gravity, skull nail 4 be can be placed in putting hole 221, and position is constant；And when skull nail 4 by by it is upper from Under external force (can be to screw power) when, then 4 during moving downward, the inner sidewall of putting hole 221 is softened skull nail, So that skull follows closely 4 on from lower movement, and then complete the operation that bone hole pedestal 1 is fixed on to skull 400.

For the specific set-up mode of putting hole 221, it can also be equipped on the top of putting hole 221 and prevent being disengaged from the groove 222, such as said Shown in bright book attached drawing 3；Anti- to be disengaged from the groove 222 annularly, upper and lower ends are relatively narrow, and wide middle, when skull follows closely 4 on from lower placement When in putting hole 221, the nail body of skull nail 4, which can pass through, prevents being disengaged from the groove 222, and the lower end surface that skull follows closely 4 ailheads needs to overcome It is anti-to be disengaged from the groove resistance brought by 222 upper end narrower parts, prevent being disengaged from the groove in 222 so that the ailhead of skull nail 4 is located at, prevent at this time It is disengaged from the groove 222 inner sidewall and the ailhead of skull nail 4 offsets, and prevent that the upper and lower ends for being disengaged from the groove 222 limit skull respectively and follow closely 4 ailheads It moves up and down, skull nail 4 is avoided to fall off relative to putting hole 221.

In addition to this, putting hole 221, which is also provided with, is located at the anti-bone nail slot 223 for being disengaged from the groove 222 lower sections, that is, each put Set hole 221 can by it is anti-be disengaged from the groove 222 and bone nail slot 223 constitute, the inner wall smooth of bone nail slot 223, and by the upper tapered setting under； It can be seen from the above, anti-be disengaged from the groove 222 ailhead to place skull nail 4, and bone nail slot 223 is used to accommodate the nail body of skull nail 4；When Skull nail 4 is placed in putting hole 221 and skull nail 4 when under not by external force, and the end nail tip of skull nail 4, which is located at, places 221 outside of hole, namely the lower section in putting hole 221；In view of the inner wall smooth of bone nail slot 223, when the ailhead of skull nail 4 is downward When moving across bone nail slot 223, then the resistance of bone nail slot 223 suffered by 4 ailheads of skull nail is smaller, can open bone nail easily Slot 223, without providing biggish external force to skull nail 4.

In the utility model, the axis vertical of hand-held ontology 21 can also be arranged, and the axis of two putting holes 221 inclines Tiltedly setting, is not vertically arranged.And the axis of putting hole 221 inclines on from lower direction close to the axis direction of hand-held ontology 21 Tiltedly, it so that the skull nail 4 being placed in putting hole 221 has certain tilt angle, not remains and fastens straight down Bone hole pedestal 1；So set, can make skull nail 4 approximately perpendicular to the cambered surface of skull 400, fixation is relatively reliable, and fitting is more Closely, as shown in Figure of description 4 and attached drawing 5.

In order to improve the widely applicable property of bone hole pedestal 1, the upper surface of bone hole pedestal 1 is additionally provided with two deformation slots 12, such as Shown in Figure of description 1；Two deformation slots 12 are located at the two sides of through-hole 11, to adjust the bottom surface radian of bone hole pedestal 1. In use, if the radian of skull 400 is larger, then bone hole pedestal 1 can be carried out suitably on the basis of deforming slot 12 Bending, it is ensured that the bottom surface of bone hole pedestal 1 is in certain radian, to fit in the surface of skull 400.

For the specific set-up mode of base handle 2, the utility model can be using the side of two handle half-shells 20 clamping Formula is formed；Namely base handle 2 includes two handle half-shells 20, two handle half-shells 20 can mutually be engaged by clamping, and be clamped Base handle 2 is formed after cooperation, as shown in Figure of description 2 and attached drawing 3.Each handle half-shell 20 all has hand-held ontology half Shell 23 and two armlet half-shells 24, two armlet half-shells 24 are located at the two sides of hand-held ontology half-shell 23.

For the concrete shape construction of each handle half-shell 20, as shown in Figure of description 3；Each hand-held ontology half Shell 23 is in cavity structure, and lateral wall is in semi-cylindrical；The left side edge of hand-held ontology half-shell 23 has public buckle 231, public affairs card The number of button 231 can have master card button 232, master card button for the right side edge for two shown in attached drawing 3, holding ontology half-shell 23 232 number equally can be for two shown in attached drawing 3；Certainly, the number of public buckle 231 and master card button 232 can also be it He, as long as two holding quantity are consistent.

The inside top of the cavity structure of hand-held ontology half-shell 23 has stop bit bone 233, and stop bit bone 233 radially extends, It stretches out in except cavity structure；Armlet half-shell 24 positioned at hand-held 23 left side of ontology half-shell has the first fastener 241, this first Fastener 241 is located below；Armlet half-shell 24 positioned at hand-held 23 right side of ontology half-shell equally has the first fastener 241, and First fastener 241 is located above.

In mounting seat handle 2, two handle half-shells 20 cooperate, positioned at the public affairs buckle of different handle half-shells 20 231 and master card button 232 mutually be clamped, realize two handle half-shells 20 side wall clamping；At the same time, two different handle half-shells 20 stop bit bone 233 is bonded radially, it is ensured that the top clamping of two handle half-shells 20 is reliable；Positioned at different handle half-shells 20 Two the first fasteners 241 up and down offset in the axial direction, thus formed two armlet half-shells 24；So set, two handles Half-shell 20 is respectively provided with the component that can be mutually clamped in different location, so that 2 structure of base handle after installation is reliable, two A handle half-shell 20 is not easy to thread off, and significantly improves the structural strength of base handle 2.

For two the first fasteners 241 up and down of same armlet 22, upper and lower two the first fasteners 241 are belonging respectively to not Same armlet half-shell 24；When the clamping of two the first fasteners 241 up and down of different armlet half-shells 24 finishes, then up and down two the There is precompression, at this time two the first fasteners 241 mutually clamping in the up-down direction up and down between one fastener 241, and two It is a to fit closely, form armlet 22；It is not at this time gap between upper and lower two the first fasteners 241；Simultaneously in armlet 22 Inside form putting hole 221, skull nail 4 is placed in putting hole 221.

In use, downward active force is applied to skull nail 4, if skull nail 4 is along the direction of putting hole 221 It is from beginning to end not in the movement in gap namely skull nail 4 when moving downward, between upper and lower two the first fasteners 241 Track is expected motion profile.If skull nail 4 fails to move downward along the direction of putting hole 221, upper and lower two It will appear gap between first fastener 241, prompt operator's motion profile that skull follows closely 4 at this time to have deviated from expection, need Skull nail 4 is taken out, is implanted into again.So set, can effectively prompt whether the motion profile of operator's skull nail 4 accords with It closes and is expected, i.e., judged that judgment method is simple and efficient by whether there is gap between upper and lower two the first fasteners 241, Surgical effect can be significantly improved.

For the specific set-up mode of public buckle 231 and master card button 232, the utility model provides following specific embodiment party Formula: public affairs buckle 231 is set to the inside of cavity structure comprising groove 2310 and the second fastener in groove 2310 2311, the second fastener 2311 extends in the axial direction；Master card button 232 includes elongated end 2320 and is connected with elongated end 2320 Embedded part 2321；As shown in Figure of description 3.

When installing two handle half-shells 20, it is right first that with master card 232 are buckled positioned at the public buckle 231 of different handle half-shells 20 Level is set, and then protrudes into the embedded part 2321 of master card button 232 in groove 2310, and is kept away under the action of the second fastener 2311 Exempt from the disengaging of embedded part 2321 to fit closely in groove 2310 namely the second fastener 2311 with embedded part 2321, it is ensured that embedded part 2321 fix relative to the position of the second fastener 2311.

The sidewall bottom of hand-held ontology 21 has multiple elastic walls 25, and each elastic wall 25 all has a buckle 210；Wherein, each buckle 210 is in arcuation；In use, each elastic wall 25 elasticity can become to a certain extent Shape radially has small deformation；When buckle 210 is connected in through-hole 11, deformation occurs for elastic wall 25, it is ensured that 210 energy of buckle It enough protrudes into through-hole 11, and after buckle 210 protrudes into through-hole 11, then elastic wall 25 restores deformation, buckles 210 and through-hole 11 at this time In clamped condition.

Such as Figure of description 2 and attached drawing 3, multiple elastic walls 25 can be set, and be distributed in hand-held ontology 21 in petaloid Bottom, the two sides of each elastic wall 25 all have the deformation for extending axially upward and being parallel to each other along hand-held ontology 21 Slot 26, to realize the flexible deformation of any elastic wall 25.It should be evident that in order to realize that it is small that elastic wall 25 can radially have Deformation, multiple deformation slots 26 being parallel to each other, so, the two of arbitrary neighborhood can be opened up in the bottom of hand-held ontology 21 An elastic wall 25 can be formed between a deformation slot 26, to conveniently realize the deformation of elastic wall 25.

In order to enable base handle 2 to cooperate various sizes of bone hole 410, the utility model constitutes whole elastic walls 25 The elastic wall group of at least two groups diametrically, and the diameter of circumference where different elastic wall groups is different, it is various sizes of to cooperate Bone hole 410.In the course of surgery, it is therefore possible to use various sizes of drill bit forms bone hole 410, and thus bone hole 410 is not a kind of ruler It is very little；Cooperate various sizes of bone hole 410 by different elastic wall groups as a result, and then improves the widely applicable property of base handle 2.

Wherein, each elastic wall group should include at least two elastic walls 25, and at least two elasticity of each elastic wall group Wall 25 is preferably uniformly distributed in the circumferential, the size constancy of the through-hole 11 of bone hole pedestal 1, and whole elastic wall group can with it is logical Hole 11 connects and fixes；In use, according to the size of current bone hole 410, one group of elastic wall group is selected, when the elastic wall group When being clamped with through-hole 11, then the different elastic walls 25 of the elastic wall group can uniformly apply the clamping power to through-hole 11, it is ensured that bottom Seat handle 2 and the clamping of bone hole pedestal 1 are reliable；Meanwhile the different elastic walls 25 of the elastic wall group can extend into bone hole 410 In, it realizes and cooperates, reach the reliable purpose of clamping.

In order to further increase the location efficiency of base handle 2 Yu bone hole pedestal 1, bone hole pedestal 1 is equipped with limiting slot 13, more A limiting slot 13 is along the circumferentially distributed of through-hole 11, as shown in Figure of description 1；At the same time, at least one elastic wall 25 is equipped with The positioning bone 27 that scarf closes can be inserted with the equal limiting components of limiting slot 13, to limit base handle 2 relative to the bone hole bottom Seat 1 rotates, as shown in Figure of description 1.So set, the positioning of base handle 2 Yu bone hole pedestal 1 can greatly be facilitated, Ensure that the armlet 22 of base handle 2 is located on the nail hole 10 of bone hole pedestal 1, avoid in use base handle 2 it is opposite It is subjected to displacement in bone hole pedestal 1.

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, including base handle (2), the base handle (2) have the hand-held sheet being in the form of a column Body (21), and it is located at the two sides of the hand-held ontology (21), the armlet (22) to place skull nail, which is characterized in that

The armlet (22) has by the putting hole (221) of the upper tapered setting under, and the putting hole (221) has elasticity； When to downward coupling mechanism force is applied positioned at the putting hole (221) mesocrany bone nail, the putting hole (221) can open, with Realize that skull nail moves downward.

2. the fixed device of medical instrument according to claim 1, which is characterized in that the top of the putting hole (221) is also Equipped with anti-being disengaged from the groove (222) with what is fallen off to avoid skull nail.

3. the fixed device of medical instrument according to claim 2, which is characterized in that the axis of two putting holes (221) It is tilted on from lower direction close to the axis direction of the hand-held ontology (21).

4. the fixed device of medical instrument according to claim 2, which is characterized in that the putting hole (221) further includes position In the anti-bone nail slot (223) for being disengaged from the groove (222) lower section and inner wall smooth.

5. the fixed device of medical instrument described in any one according to claim 1 ~ 4, which is characterized in that the hand-held ontology (21) sidewall bottom has being capable of flexible deformation, the elastic wall (25) to be clamped medical instrument.

6. the fixed device of medical instrument according to claim 5, which is characterized in that multiple elastic walls (25) are in petaloid It is distributed in the bottom of the hand-held ontology (21), and the two sides of any elastic wall (25) all have by the hand-held ontology (21) the deformation slot (26) that bottom extends and is parallel to each other along axis upwards, to realize the bullet of any elastic wall (25) Property deformation.

7. the fixed device of medical instrument according to claim 6, which is characterized in that all the elastic wall (25) is constituted extremely Few two groups of elastic wall groups diametrically, and the diameter of the circumference where the different elastic wall groups is different.

8. the fixed device of medical instrument described in any one according to claim 1 ~ 4, which is characterized in that the base handle (2) include two handle half-shells (20) that can be engaged by clamping, form the pedestal after two handle half-shell (20) cooperations Handle (2)；Wherein, each described handle half-shell (20) all has hand-held ontology half-shell (23) and two armlet half-shells (24).

9. the fixed device of medical instrument according to claim 8, which is characterized in that the hand-held ontology half-shell (23) is in sky Cavity configuration, and the both sides of the edge of the hand-held ontology half-shell (23) are respectively equipped with public buckle (231) and master card button (232), it is described Public affairs buckle (231) and the master card button (232) can mutually be engaged by clamping；The inside top of the cavity structure has radially The stop bit bone (233) of extension；Positioned at the outside point of the difference armlet half-shell (24) of the same hand-held ontology half-shell (23) It She You not different the first fastener (241) in upper and lower position；

When the two hand-held ontology half-shells (23) are engaged by clamping, the two stop bit bones (233) are radially bonded, and upper and lower position is different The mutually clamping up and down of two first fasteners (241), and the public buckle (231) and the master card button (232) mutually card Cooperation is connect, the base handle (2) are formed；

Wherein, there is the precompressed after clamping between two first fasteners (241) up and down of the same armlet (22) Power, and when two different first fasteners (241) of upper and lower position mutually clamping up and down, then two first locking up and down Portion is not in gap between (241)；

When the skull nail for being located at the armlet (22) is moved downward along the direction of the putting hole (221), then up and down described in two First fastener is not in gap between (241)；

When the skull nail for being located at the armlet (22) is not moved along the direction of the putting hole (221), then two described the up and down One fastener will appear seam between (241).

10. the fixed device of medical instrument according to claim 9, which is characterized in that the public buckle (231) is set to described The inside of cavity structure comprising groove (2310) and be set to the groove (2310) and along the axis of the hand-held ontology (21) The second fastener (2311) that line direction extends；

The master card button (232) include to the groove (2310) direction extend elongated end (2320) and with the elongated end (2320) embedded part for being connected, can extend into the groove (2310) and being mutually clamped with second fastener (2311) (2321).