CN209377634U - A kind of living body sampler and drill bit - Google Patents

Abstract

The utility model relates to a kind of living body sampler and suitable for the drill bit of the living body sampler.Living body sampler includes handheld drill rifle, sampling cannula is installed, handheld drill rifle has rotation pipette tips, rotates and is equipped with sampling inserted link in pipette tips on the shell of handheld drill rifle, sampling inserted link is located in the sampling cannula, samples inserted link and/or sampling cannula and the handheld drill rifle releasable connection；The front end for sampling inserted link is equipped with drill bit, drill bit includes drill bit shaft and at least one cutting tip that drill bit shaft end is arranged in, the cutting edge of cutting tip extends radially outwardly from the axis of drill bit shaft and passes through its building up by welding, the cutting edge of cutting tip exposes the sampling cannula, and drill bit surrounds the storage sample chamber for accommodating histoorgan sample in the inside of cutting tip and sampling cannula.The living body sampler cuts sampling by the bit of adaptation, and drill bit can be made to be attached to organ surface sampling, to reduce the wound to organs of living beings.

Description

A kind of living body sampler and drill bit

Technical field

The utility model relates to a kind of living body sampler and suitable for the drill bit of the living body sampler.

Background technique

The metabolism state of tissue and diagnoses and treatment are the research fields developed, currently, being mostly by obtaining tissue sample This is for subsequent sampling or detection.There are many mode for obtaining tissue samples, more for the validity and real-time for guaranteeing sampling It is to carry out living body sampling, this just proposes higher design to the sampler sampled for living body, manufacture requires.

Authorization Notice No. is that the Chinese utility model patent of CN204789014U discloses a kind of tissue sampling device, the tissue Sampler includes the needle core sampling component extended along the longitudinal direction, and needle core sampling component is set with including guiding movement along the longitudinal direction Needle core and needle tubing, needle core front end is equipped with syringe needle, and needle core rear end cap is equipped with reset for applying from forward active force to needle tubing Spring, the sampling section for being sampled to tissue is additionally provided on needle core, and sampling section outer peripheral surface is equipped with sampling groove, samples recessed There are two slot is axially disposed, the annular end face of needle tubing front end is equipped with the dentation cutting blade of annular.The tissue sampling device is carrying out When tissue sampling, needle core sampling component is pierced into forward in the tissue of sampling, then overcomes the active force post-tensioning needle of reset spring Pipe exposes the sampling groove on needle core, enters structural portion of tissue sample in sampling groove, unclamps reset spring, by The annular dentation cutting blade of needle tubing front end cuts tissue junction, and cutting enters the tissue in sampling groove, finally samples tissue Device takes out from sampling body.In actual operation, the needle core in above-mentioned tissue sampling device needs to be inserted into living tissue organ Certain depth can just be such that two sampling grooves for accommodating sampling tissue enter in histoorgan, i.e., needle core is inserted into living tissue Intraorganic depth is greater than the length of two sampling grooves vertically, and therefore, this sample mode creates the internal organ of living body Hurt larger.

Utility model content

The purpose of this utility model is to provide a kind of living body samplers, to solve living body sampling apparatus in the prior art The larger technical problem of the internal organ wound to living body in sampling；The purpose of this utility model, which also resides in, provides one kind suitable for being somebody's turn to do Living body sampler can be realized the drill bit reduced to living body internal organ wound.

To achieve the above object, the technical solution of the utility model is: a kind of living body sampler, including handheld drill rifle, hand It holds and sampling cannula is installed on the shell for boring rifle, handheld drill rifle has rotation pipette tips, rotates and is equipped with sampling inserted link in pipette tips, adopts Sample inserted link is located in the sampling cannula, samples inserted link and/or sampling cannula and the handheld drill rifle releasable connection；Sample inserted link Front end be equipped with drill bit, drill bit includes drill bit shaft and at least one cutting tip that drill bit shaft end is arranged in, cutting tip Cutting edge extend radially outwardly and cut when drill bit is cut by its end face, bite from the axis of drill bit shaft The cutting edge of piece exposes the sampling cannula, and drill bit surrounds in the inside of cutting tip and sampling cannula and accommodates histoorgan sample The storage sample chamber of product.

The beneficial effect of living body sampler is: living body sampler provided by the utility model is arranged in the front end of sampling inserted link One drill bit with drill bit shaft and cutting tip, utilizes the end of the cutting edge to extend radially outwardly on cutting tip along drill bit shaft Face carries out rotary cutting sampling；In the actual operation process, so that drill bit is attached to the surface of living tissue organ to be sampled, pass through Cutting edge to carry out from outward appearance to inner essence ground auger sample thief to living tissue organ, since the storage sample chamber of the living body sampler is located at drill bit Cutting edge rear side, i.e. storage sample chamber do not need to go deep into inside histoorgan to be sampled, needs compared to existing storage sample chamber It is inserted into for the sampler inside living tissue organ, living body sampler provided by the utility model can substantially reduce insertion Resistance, and reduce the wound to living tissue organ.

Further, the cutting tip and the drill bit shaft form umbrella-shaped structure, and the cutting edge of cutting tip is from interior It is tilted outward close to the other end of drill bit shaft.

Beneficial effect is: cutting tip and drill bit shaft form umbrella-shaped structure, so that contact of the cutting tip with histoorgan Area is big, can increase disposable sampling quantity；The cutting edge of cutting tip is tilted close to the other end of drill bit shaft from inside to outside, is had Conducive to the sample of cutting, to enter storage sample intracavitary.

Further, the cutting tip includes the taper sheet body that axis is overlapped with the axis of drill bit shaft, taper sheet body Outer edge cornerite is less than 360 ° and disconnects in a circumferential direction, and taper sheet body is arranged in wherein in the cutting edge of the cutting tip One edge radially extended.

Beneficial effect is: drill bit can be made just to start to sample after being adjacent to histoorgan surface, to avoid to non-sampled The scuffing of position and/or histoorgan；Meanwhile if the outer edge of taper sheet body does not turn off in a circumferential direction, under cutting Tissue sample cannot propagate into that storage sample is intracavitary, and therefore, the outer edge of taper sheet body disconnects in a circumferential direction, be conducive to cutting The sampling of histoorgan under cutting.

Further, the cutting tip is provided with two or more, and two neighboring cutting tip is spaced in a circumferential direction Arrangement is spaced the gap of formation for the histoorgan sample under cutting and enters the storage sample chamber.

Beneficial effect is: can be improved cutting speed, two neighboring cutting blade is conducive to make in circumferencial direction arranged for interval It is intracavitary that the lower sample of cutting from the gap of interval formation enters storage sample.

Further, the cutting tip further includes being integrally attached to prolonging away from another radial direction of cutting edge for taper sheet body The partition for the marginal position stretched, partition is in straight sheet and axially extends, and the axis and partition of drill bit shaft are in same plane Or partition helically sheet, the axis of axis and drill bit shaft are in same plane.

Beneficial effect is: partition and cutting tip are integrally formed, and the sample under cutting tip is cut is along cutting The cutting direction for cutting sword is adhered on partition, and partition is made into spiral sheet, is more advantageous to the collection of the sample under cutting.

Further, the outer edge of the taper sheet body is aligned in the axial direction with the nozzle of the sampling cannula.

Beneficial effect is: if the length that the outer edge of taper sheet body stretches out the nozzle of sampling cannula is too long, can to cut There is certain gap, since storage sample chamber is located at the rear portion of cutting tip, thus between paring blade and the tube body of sampling cannula Meeting is so that the tissue sample under cutting is easy that it is intracavitary storage sample cannot be can smoothly enter into from gap location exposing；Simultaneously as being adopted when sampling The nozzle of sample intubation is against the histoorgan surface of living body, if the outer edge of taper sheet body stretches out the length of the nozzle of sampling cannula Length is spent, it is easy in this way so that bit damage so that sampling cannula protrudes into living tissue organ in order to complete sampling needs, It is also easy to cause wound to histoorgan；The outer edge of taper sheet body is aligned in the axial direction with the nozzle of sampling cannula to be conducive to cut It is intracavitary that sample under cutting can enter to the greatest extent storage sample.

Further, releasable connection between the drill bit and sampling inserted link.

Beneficial effect is: after the completion of sampling, being conducive to the replacement of drill bit, so that a drill bit be avoided to make on multiple animals With and cause the consequence of cross-infection.

Further, the sampling cannula is assemblied on the shell of handheld drill rifle relative to sampling inserted link activity, on shell Equipped with the locking mechanism for locking sampling cannula.

Beneficial effect is: sampling cannula activity is assemblied on the shell of handheld drill rifle, is conducive to drill bit after the completion of sampling Disassembly；Shell is equipped with the fixation that locking mechanism is conducive to sampling cannula.

Further, the locking mechanism includes being inserted on the shell for be assemblied in handheld drill rifle for sampling cannula activity Necking casing, necking sleeve external thread are connected with closing in tapered sleeve, by screwing closing in tapered sleeve to squeeze necking casing to realize The locking of the sampling cannula.

Beneficial effect is: necking casing is convenient for being assemblied on handheld drill rifle, and the elastic claw on necking casing is being closed up The extruding of tapered sleeve can apply coupling mechanism force to sampling cannula, to lock to sampling cannula is fixed.

The technical solution of drill bit provided by the utility model is: one end of a kind of drill bit, including drill bit shaft, drill bit shaft is equipped with Connection structure for connecting with the shaft of handheld drill rifle, the other end are equipped with cutting tip, and the cutting edge of cutting tip is from brill Head axis extending radially outwardly and being cut when drill bit is cut by its end face.

The beneficial effect of drill bit is: drill bit provided by the utility model can drill through cut along the surface of histoorgan It cuts, and storage sample chamber is located at the rear portion of the cutting tip of drill bit, therefore entire storage sample chamber does not need to protrude into the interior of living tissue organ Portion, so as to effectively reduce the wound to living tissue organ.

Further, the cutting tip and the drill bit shaft form umbrella-shaped structure, and the cutting edge of cutting tip is from interior It is tilted outward close to the other end of drill bit shaft.

Beneficial effect is: cutting tip and drill bit shaft form umbrella-shaped structure, so that contact of the cutting tip with histoorgan And be not easy to scratch tissue, and contact area is big, sampling is fast；The cutting edge of cutting tip is from inside to outside close to the other end of drill bit shaft Inclination, the sample for being conducive to cutting enter drill bit internal space.

Further, the cutting tip includes the taper sheet body that axis is overlapped with the axis of drill bit shaft, taper sheet body Outer edge cornerite is less than 360 ° and disconnects in a circumferential direction, and taper sheet body is arranged in wherein in the cutting edge of the cutting tip One edge radially extended.

Beneficial effect is: drill bit can be made just to start to sample after being adjacent to histoorgan surface, to avoid to non-sampled The scuffing of position and/or histoorgan；Meanwhile if the outer edge of taper sheet body does not turn off in a circumferential direction, under cutting Tissue sample cannot propagate into that storage sample is intracavitary, and therefore, the outer edge of taper sheet body disconnects in a circumferential direction, be conducive to cutting Histoorgan sample under cutting enters.

Further, the cutting tip is provided with two or more, and two neighboring cutting tip is spaced in a circumferential direction Arrangement.

Beneficial effect is: can be improved cutting speed, two neighboring cutting blade is conducive to make in circumferencial direction arranged for interval The storage sample that the gap that sample under cutting is formed from interval enters the living body sampler being adapted to therewith is intracavitary.

Further, the cutting tip further includes being integrally attached to prolonging away from another radial direction of cutting edge for taper sheet body The partition for the marginal position stretched, partition is in straight sheet and axially extends, and the axis and partition of drill bit shaft are in same plane Or partition helically sheet, the axis of axis and drill bit shaft are in same plane.

Beneficial effect is: partition and cutting tip are integrally formed, and the sample under cutting tip is cut is along cutting The cutting direction for cutting sword is adhered on partition, and partition is made into spiral sheet, is more advantageous to the collection of the sample under cutting.

Detailed description of the invention

Fig. 1 is the stereochemical structure oblique view of living body sampler provided by the utility model；

Fig. 2 is the stereochemical structure main view of living body sampler provided by the utility model；

Fig. 3 is the stereochemical structure top view of living body sampler provided by the utility model；

Fig. 4 is the B-B cross-sectional view of Fig. 3；

Fig. 5 is the stereochemical structure right view of living body sampler provided by the utility model；

Fig. 6 is the A-A cross-sectional view (saving data line, fixing clamp and spherical hinge structure) of Fig. 5；

Fig. 7 is the structural schematic diagram of the retaining mechanism in living body sampler provided by the utility model；

Fig. 8 is the structural schematic diagram of necking casing in Fig. 7；

Fig. 9 is the schematic perspective view of the drill bit in living body sampler provided by the utility model；

Figure 10 is the partial schematic diagram of the drill bit in living body sampler provided by the utility model.

In figure: 1- handheld drill rifle, 2- shell, 3- drill bit, 4- sampling cannula, 5- sample inserted link, 6- closing in tapered sleeve, 7- necking Casing, 8- needle tubing probe, 9- guide sleeve, 10- photographic device, 11- mounting base, 12- rack gear, 13- fixing clamp, 14- adjusting knob, 15- spherical hinge structure, 16- data line, 17- drill bit shaft, 18- partition, 19- cutting tip, 20- bit adapter, 21- link block, 22- Storage sample chamber, 23- through-hole, 24- cutting edge, 25- screw section.

Specific embodiment

The embodiments of the present invention is described further with reference to the accompanying drawing.

The specific embodiment of living body sampler provided by the utility model, as shown in Figures 1 to 6, the living body sampler packet Handheld drill rifle 1 is included, sampling cannula 4, the rotation pipette tips position releasable connection of handheld drill rifle 1 are installed on the shell 2 of handheld drill rifle 1 There is sampling inserted link 5, the front end releasable connection of sampling inserted link 5 has drill bit 3 in order to the disassembly of drill bit 3 after sampling；Sampling cannula 4 Be set in sampling inserted link 5 outside, and can relative sample inserted link 5 be axially moveable, so as to adjust drill bit 3 expose sampling insert The length of pipe 4.Retaining mechanism for locking sampling cannula 4 is installed on the shell 2 of handheld drill rifle 1.In the present embodiment, it locks Tight mechanism includes necking casing 7 and closing in tapered sleeve 6 shown in Fig. 7, and wherein necking casing 7 is assemblied in the shell 2 of handheld drill rifle 1 On, structure is as shown in Figure 8；Sampling inserted link 5 is passed through out of necking casing 7,4 sets of sampling cannula and samplings outer in sampling inserted link 5 In the rear end insertion necking casing 7 of intubation 4, the adjustable in length drill bit 3 in necking casing 7 is inserted by adjusting sampling cannula 4 Expose the length of sampling cannula 4.Necking casing 7 is connected with closing in tapered sleeve 6 by screw threads for fastening, by screwing closing in tapered sleeve 6, is made It obtains closing in tapered sleeve 6 and squeezes necking casing 7 so that the elastic claw of necking casing 7, which clamps sampling cannula 4, realizes sampling cannula 4 Locking.

As shown in Figure 9 and Figure 10, drill bit 3 includes drill bit shaft 17 and the cutting tip 19 that 17 front end of drill bit shaft is arranged in, Drill bit 3 surrounds the storage sample chamber 22 for accommodating histoorgan sample between the inside and sampling cannula 4 of cutting tip 19.Cutting Blade 19 includes the taper sheet body that is overlapped with the axis of drill bit shaft 17 of axis, the outer edge cornerite of capitate sheet body less than 360 °, and And disconnect in a circumferential direction, be conducive to the sampling to the histoorgan under cutting；Meanwhile outer edge and the sampling of taper sheet body The nozzle of intubation 4 is aligned in the axial direction, can be avoided the damage of drill bit 3 and the damage to living tissue organ, and be conducive to Sample under cutting can enter in storage sample chamber 22 to the greatest extent；Taper sheet body is arranged in the cutting edge 24 of cutting tip 19 One of them edge radially extended.Constitute umbrella-shaped structure between cutting tip 19 and drill bit shaft 17 so that cutting tip 19 with The contact area of living tissue organ is big, can increase disposable sampling quantity；The axis of its cutting edge 24 from drill bit shaft 17 is radial Extend outwardly and cut when drill bit 3 is cut by its end face, cutting edge 24 is from inside to outside close to drill bit shaft 17 The other end is in tilted layout.In the present embodiment, there are two cutting tip 19 is set, two cutting tips 19 are spaced in a circumferential direction Arrangement is spaced the gap of formation and enters in storage sample chamber 22 for the living tissue organ samples under cutting.Cutting tip 19 also wraps It includes and taper sheet body integrally connected is away from another marginal position radially extended of cutting edge 24 and straight line prolongs in the axial direction The partition 18 stretched, the axis and partition 18 of drill bit shaft 17 are in same plane, and certainly, partition 18 also can be made in axis direction spiral shell The axis of the laminated structure that the structure of rotation extension, i.e. partition 18 are spiral, helix and drill bit shaft 17 in the same plane, more has Conducive to the collection of the histoorgan sample under cutting.Drill bit 3 further include be arranged in 17 rear end of drill bit shaft be in the form of a column screw Section 25, the rear end for screwing section 25 are equipped with bit adapter 20, as shown in Figure 4 and Figure 6, bit adapter 20 and sampling 5 front end of inserted link The link block 21 being equipped with is threadedly coupled, and the rotation direction fastening to realize drill bit 3 opposite with the sampling direction of rotation of inserted link 5.It screws Section 25 on be provided with the through-hole 23 that can be used for inserting bolt, by inserting and screwing bolt, can by entire drill bit 3 from sampling inserted link 5 On dismantle.

As shown in Figure 1, the living body sampler further includes the modulator being movably arranged on sampling cannula 4, the peace of modulator Adjusting knob 14 is rotatably equipped on dress seat 11, the inner end of adjusting knob 14 is equipped with gear, and the outer tube wall of sampling cannula 4 is equipped with The rack gear 12 being adapted to gear is just able to drive movement of the mounting base 11 on sampling cannula 4 by rotation of adjustment knob 14.Peace The needle tubing probe 8 parallel with sampling cannula 4 is fixed on dress seat 11, to avoid the needle tubing when adjusting of mounting base 11 from popping one's head in 8 back and forth It shakes, the guide sleeve 9 passed through for needle tubing probe 8 to be oriented to it is equipped on sampling cannula 4.The front end of needle tubing probe 8 Portion is equipped with photographic device 10, and photographic device 10 includes headlamp and miniature webcam, and miniature webcam is connected by data line 16 Be connected to the observation device for showing the intraorganic situation of living tissue, observation device can be mobile phone, be also possible to display screen, Computer, as long as can show the intraorganic character of living tissue.Adjust the position of mounting base 11, adjustable mini Image size captured by camera, consequently facilitating operator observes more suitable image.The top of mounting base 11 passes through Spherical hinge structure 15 is hinged with fixing clamp 13, and fixing clamp 13 is used to clamp above-mentioned observation device, and wherein spherical hinge structure 15 includes The support and fixed hinged ball on the support being fixed in mounting base 11, fixing clamp 13 includes being adapted to the diameter of hinged ball Casing, the position of fixing clamp 13 can be adjusted flexibly by spherical hinge structure 15, fixing clamp 13 can clamp mobile phone, and operator can By Mobile phone screen observation, judge sampling tissue.Fixing clamp 13 can also clamp WiFi transmitter, and the data line 16 in modulator can connect Catcher machine, also can connect WiFi transmitter, and connection mobile phone is observed convenient for operator, connect WiFi transmitter, operator with Neighbouring can connect WiFi by respective mobile phone per capita, and the characters such as color, the structure of viewing sampling purpose organ determine sampling Purpose organ, avoid accidentally adopting.

When in use, living body sampler is inserted into animal body for the living body sampler, by adjusting the position of mounting base 11, Under the assistance of miniature webcam, the purpose tissue or organ for needing to sample more accurately are found, and be adjacent to drill bit 3 Purpose tissue or organ surface；Handheld drill rifle 1 is opened, drives drill bit 3 to be rotated, the cutting edge of cutting tip 19 on drill bit 3 24 will carry out cutting sampling on the surface of histoorgan, since storage sample chamber 22 is at the rear portion of cutting tip 19, be cut Fragment of tissue can between two cutting tips 19 interval formed gap along partition 18 enter for accommodating organizer In the storage sample chamber 22 of official's sample, during the cutting process, storage sample chamber 22 does not need to protrude into inside living tissue organ, therefore to living body The wound of organ greatly reduces.

After the completion of cutting, handheld drill rifle 1 is closed, screws closing in tapered sleeve 6, and insert along the sampling of the axis pusher of necking casing 7 Pipe 4 is to adjust the length that sampling cannula 4 is inserted into necking casing 7, until drill bit 3 is completely exposed except sampling cannula 4；Exist later It is inserted into bolt in through-hole 23, drill bit 3 is back-outed from link block 21, can be obtained required histoorgan sample.It needs to illustrate , every time when sampling, the drill bit 3 in the living body sampler can be intended for single use, and one one is changed, i.e., drill bit 3 is twisted off, together with Sample is put into togerther vessel preservation, then changes another unsampled drill bit, adjusts to stand-by state, can resampling, this Sample is not only avoided that cross-infection, but also saves the time.Certainly, the drill bit 3 in the living body sampler can also be used continuously, i.e., once After sampling, the tissue sample in storage sample chamber 22 is scraped with instrument, drill bit 3 is cleaned and sterilized, sampling cannula 4 is adjusted To stand-by state, then an other animal is sampled.It is noted that being required to take before transformed samples animal every time The drill bit of Guo Shangyitou animal tissue organ samples is cleaned, is sterilized, to avoid cross-infection.

In the above-described embodiments, cutting tip uses two, and in other embodiments, cutting tip can also be only with one It is a, at this point, the gap between taper sheet body head and the tail on the cutting tip constitutes the channel for entering storage sample chamber for histoorgan.When So, cutting tip also can be set three it is even more.

In the above-described embodiments, cutting tip includes taper sheet body, and in other embodiments, cutting tip also can be made Other structures, for example, the inclination sheet body to extend radially outwardly along its drill bit shaft axis, the inclination sheet body will be set on cutting tip Cutting edge is arranged in edge for rectangle, one side long side.

In the above-described embodiments, for locking the retaining mechanism of sampling cannula using the closing in tapered sleeve and necking being threadedly coupled Casing locks sampling cannula in the way of closing in tapered sleeve extruding necking casing.In other embodiments, the locking of sampling cannula Can also use other structures form, such as can on the shell of handheld drill rifle piece hollow rotary shaft of rolling assembling, The circumferential two sides correspondence of rotary shaft opens up fastener receptacles, sampling cannula is covered in hollow rotary shaft, using butterfly spiral shell It is female that sampling cannula is fastened in rotary shaft with bolt fastening fit structure.

In the above-described embodiments, releasable connection between inserted link and handheld drill rifle is sampled, in other embodiments, samples inserted link Can also be non-disconnectable between handheld drill rifle, while drill bit can also be non-disconnectable with sampling inserted link, that is, samples inserted link, drill bit and hand Brill rifle is held to be an integral structure.The living body sampler of this structure unclamps locking sleeve, moves backward after the completion of cutting sampling Sampling cannula exposes drill bit, is scraped the intracavitary sample of storage sample with tweezers or other utensils, then clean drill bit, sterilizes, and then will Sampling cannula is restored and is locked, then carries out next sampling.

Claims (14)

1. a kind of living body sampler, it is characterised in that: including handheld drill rifle, sampling cannula is installed on the shell of handheld drill rifle, Handheld drill rifle has rotation pipette tips, rotates and is equipped with sampling inserted link in pipette tips, and sampling inserted link is located in the sampling cannula, samples Inserted link and/or sampling cannula and the handheld drill rifle releasable connection；The front end for sampling inserted link is equipped with drill bit, and drill bit includes drill bit shaft And at least one cutting tip of drill bit shaft end is set, the cutting edge of cutting tip from the axis of drill bit shaft radially outward Extending and is cut when drill bit is cut by its end face, the cutting edge of cutting tip exposes the sampling cannula, and Drill bit surrounds the storage sample chamber for accommodating histoorgan sample in the inside of cutting tip and sampling cannula.

2. living body sampler according to claim 1, it is characterised in that: the cutting tip and the drill bit shaft form umbrella Shape structure, and the cutting edge of cutting tip is tilted close to the other end of drill bit shaft from inside to outside.

3. living body sampler according to claim 2, it is characterised in that: the cutting tip includes axis and drill bit shaft The taper sheet body that axis is overlapped, the outer edge cornerite of taper sheet body are disconnected less than 360 ° and in a circumferential direction, the bite One of them edge radially extended of taper sheet body is arranged in the cutting edge of piece.

4. living body sampler according to claim 3, it is characterised in that: the cutting tip is provided with two or more, phase Adjacent two cutting tips arranged for interval in a circumferential direction, is spaced the gap of formation for cutting described in lower histoorgan entrance Storage sample chamber.

5. living body sampler according to claim 4, it is characterised in that: the cutting tip further includes being integrally attached to bore The partition of another marginal position radially extended away from cutting edge of shape sheet body, partition is in straight sheet and axially extends, The axis of drill bit shaft and partition be in same plane or partition helically sheet, and the axis of axis and drill bit shaft is in same Plane.

6. according to the described in any item living body samplers of claim 3-5, it is characterised in that: the outer edge of the taper sheet body with The nozzle of the sampling cannula is aligned in the axial direction.

7. living body sampler according to claim 1-5, it is characterised in that: between the drill bit and sampling inserted link Releasable connection.

8. living body sampler according to claim 1, it is characterised in that: the sampling cannula is relative to sampling inserted link activity It is assemblied on the shell of handheld drill rifle, shell is equipped with the locking mechanism for locking sampling cannula.

9. living body sampler according to claim 8, it is characterised in that: the locking mechanism includes being assemblied in handheld drill rifle Shell on for sampling cannula activity insertion necking casing, necking sleeve external thread is connected with closing in tapered sleeve, by screwing Locking of the closing in tapered sleeve to squeeze necking casing to realize the sampling cannula.

10. a kind of drill bit, it is characterised in that: including drill bit shaft, one end of drill bit shaft is equipped with for connecting with the shaft of handheld drill rifle The connection structure connect, the other end are equipped with cutting tip, cutting edge the extending radially outwardly and boring from drill bit shaft of cutting tip Head is cut when being cut by its end face.

11. drill bit according to claim 10, it is characterised in that: the cutting tip and the drill bit shaft form umbrella knot Structure, and the cutting edge of cutting tip is tilted close to the other end of drill bit shaft from inside to outside.

12. drill bit according to claim 11, it is characterised in that: the cutting tip includes the axis of axis and drill bit shaft The outer edge cornerite of the taper sheet body of coincidence, taper sheet body is disconnected less than 360 ° and in a circumferential direction, the cutting tip One of them marginal position radially extended of taper sheet body is arranged in cutting edge.

13. drill bit according to claim 12, it is characterised in that: the cutting tip is provided with two or more, and adjacent two A cutting tip arranged for interval in a circumferential direction.

14. drill bit according to claim 13, it is characterised in that: the cutting tip further includes being integrally attached to cone sheets The partition of another marginal position radially extended away from cutting edge of body, partition is in straight sheet and axially extends, drill bit The axis of axis and partition be in same plane or partition helically sheet, and the axis of axis and drill bit shaft is in same and puts down Face.