CN104739457A - Electric bone biopsy device - Google Patents
Electric bone biopsy device Download PDFInfo
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- CN104739457A CN104739457A CN201510179817.4A CN201510179817A CN104739457A CN 104739457 A CN104739457 A CN 104739457A CN 201510179817 A CN201510179817 A CN 201510179817A CN 104739457 A CN104739457 A CN 104739457A
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Abstract
The invention relates to an electric bone biopsy device. The device comprises a power driver. The output end of the power driver is connected with a disposable biopsy needle locking unit through an adapter joint. A disposable biopsy needle is fixed and locked on the disposable biopsy needle locking unit. A needle holding unit is sleeved on the disposable biopsy needle in a sliding mode. The electric bone biopsy device is suitable for being operated through the power driver, and compared with a standard manual biopsy needle, large samples can be provided, produced pains are small, and use time is little. The overall appearance of the device is designed through human engineering, so that the device is convenient to operate and comfortable to touch; the power driver can be used for one time or more, and fixed rotation speed and torque are provided for disposable biopsy needle.
Description
Technical field
The invention relates to a kind of device for tissue biopsy, particularly relate to a kind of electrical bone biopsy device.
Background technology
Biopsy needle is a kind of medical apparatus and instruments, is applicable to the multiple organ of human body, can be used for the living tissue sampling of cone tumor and not clear kind tumor etc., draws cell.Utilize outer pin detachable, injectable hemorrhage and treatment etc.After the manual biopsy needle of Jamshidi company production in 1971, bone Biopsy does not obtain any substantive breakthroughs.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of electrical bone biopsy device, to overcome the defect of prior art.
Summary of the invention
The object of the present invention is to provide a kind of electrical bone biopsy device, be applicable to be operated by Power Drive Unit, can provide larger sample relative to the manual biopsy needle of standard, the pain of generation is little, and the time used is few.
The object of the present invention is achieved like this, a kind of electrical bone biopsy device, described electrical bone biopsy device comprises a power drill/driver, the outfan of this power drill/driver connects disposable biopsy needle locking device by an adapter coupling, fixing and locking once property biopsy needle on described disposable biopsy needle locking device, on this disposable biopsy needle, slip cap is provided with one and holds up pin device.
In a better embodiment of the present invention, disposable biopsy needle comprises nook closing member part, needle tubing part and fixed jacket; Described nook closing member part comprises nook closing member and needle core base, and needle core base is coaxially fixed on the afterbody of nook closing member; Needle tubing part comprises needle tubing and needle tubing seat, and needle tubing seat is coaxially fixed on the afterbody of needle tubing; Described nook closing member is coaxially located in needle tubing, and the head of nook closing member stretches out the head of needle tubing, and described needle tubing base rear end is resisted against needle core base front end; Described fixed jacket is set in the outside of needle tubing seat and needle core base and is threaded with needle tubing seat; The afterbody of fixed jacket is provided with rotation cooperating portion, and the back-end closure of fixed jacket, the rear end of needle core base is resisted against the rear end of fixed jacket; Be formed between described needle core base and fixed jacket and prevent both circumferencial direction holding sections in relative rotation.
In a better embodiment of the present invention, the front portion of needle core base is a cylinder, and cylindrical rear portion is coaxially provided with multi-faceted column, and the external diameter of multi-faceted column is less than cylinder external diameter; Described nook closing member afterbody is coaxially inserted into needle core base inside and is fixedly connected with it; The inside and outside wall in front portion of described fixed jacket is cylindrical, the rear inside wall of fixed jacket and outer wall are respectively cylindricality polyhedron, the cylindricality polyhedron of described fixed jacket rear portion outer wall forms described rotation cooperating portion, and the cylindricality polyhedron of described fixed jacket rear inside wall coordinates with the multi-faceted column at needle core base rear portion and forms described holding section.
In a better embodiment of the present invention, needle tubing seat front portion is grips, and grips rear end is coaxially provided with connecting portion, and grips is positioned at outside fixed jacket, and the outer wall circumference of grips is equipped with protruding stricture of vagina road; Described connecting portion is cylindrical, and the outer wall of connecting portion is provided with screw thread and is connected with the female thread of fixed jacket cylinder shape inner wall; Center through described grips and connecting portion is provided with through hole, and needle tubing afterbody coaxially to insert in this through hole and is fixedly connected with.
In a better embodiment of the present invention, the rear end of needle tubing seat connecting portion is coaxially provided with a female Luer, and the inner chamber of female Luer is communicated with described through hole; Be provided with a cylindrical cavity with one heart in the cylinder of needle core base front portion, the cylindrical top of described needle core base is resisted against the rear end of needle tubing seat connecting portion, and described female Luer extend in cylindrical cavity; Be extended with a protuberance around nook closing member forward bottom cylindrical cavity, this protuberance extend into female Luer inside, and protuberance outer wall is the coned face coordinated with described female Luer inwall.
In a better embodiment of the present invention, the cylinder shape inner wall of fixed jacket is provided with a circular orientation stage portion that can lean with the rear end of needle tubing seat connecting portion, this circular orientation stepped portions in fixed jacket cylinder shape inner wall female thread below and its internal diameter be greater than the cylindrical external diameter of needle core base, be less than the external diameter of needle tubing seat connecting portion.
In a better embodiment of the present invention, the diameter of the cylindricality polyhedron inwall of fixed jacket is less than the diameter of cylinder shape inner wall, and both junctions are provided with the first circular cone chamfering; Described needle core base back edge is provided with the second circular cone chamfering.
In a better embodiment of the present invention, the back edge of fixed jacket is provided with the 3rd circular cone chamfering; The cylindrical outer wall of fixed jacket is provided with first ring connected in star; The outer wall of described needle tubing is provided with scale.
In a better embodiment of the present invention, pin device is held up to comprise inner core, rubber parts and overcoat; The front end of described overcoat is closed, open rearward end coaxial sleeve is located at inner core outside; The center, front end of inner core is provided with groove, and rubber parts is embedded in described groove; The front end of inner core is resisted against the front end of overcoat; Center through described inner core, rubber parts and overcoat is provided with the axially extending bore passed through for biopsy needle.
In a better embodiment of the present invention, inner core and overcoat are cylinder, for turning set is connected together between inner core and overcoat.
In a better embodiment of the present invention, the bottom of inner core is provided with the first annular protrusion, described overcoat rear end inwall is provided with the first annular groove of the annular male cooperation with first, and the first annular protrusion is resisted against in the first annular groove, and the bottom surface of inner core flushes with the bottom surface of overcoat.
In a better embodiment of the present invention, the inwall of overcoat is provided with the second annular protrusion, and the outer wall of described inner core is corresponding with the second annular protrusion is provided with the second annular groove, and the second annular protrusion is positioned at the second annular groove.
In a better embodiment of the present invention, the outer wall of overcoat establishes irregular lines, and the front end of overcoat is provided with dismounting through hole around the surrounding of described axially extending bore; The groove of inner core front end and rubber parts are square.
In a better embodiment of the present invention, disposable biopsy needle locking device comprises axle sleeve, rotating shaft and slip cap; Described axle sleeve is the cylindrical shroud barrel part of open at both ends, and the rear end of axle sleeve is fixedly connected with adapter coupling or is integrally formed with adapter coupling; The inwall of axle sleeve is provided with annular table shoulder; The front portion of rotating shaft is the socket part of hollow, and the rear portion of rotating shaft is the driving connecting portion coaxial with socket part; The outer wall of described socket part is cylindrical, and its diameter is greater than the diameter driving connecting portion, and the inwall of socket part is the cylindricality polyhedron matched with the rotation cooperating portion at described fixed jacket rear portion; The socket part of rotating shaft is coaxially arranged on the inside of axle sleeve, and front end, socket part is resisted against annular table shoulder, and the outer wall of socket part and the contact internal walls of axle sleeve also can relatively rotate; What sleeve lining is positioned at rear end, socket part is provided with cannelure below, and be provided with back-up ring in cannelure, back-up ring is resisted against the rear end of socket part; Slip cap coaxial sleeve is located at the front outsides of axle sleeve, is formed with annular gap between slip cap and axle sleeve, is provided with Compress Spring in annular gap, and Compress Spring one end is resisted against on axle sleeve, the other end is resisted against on slip cap; The axle sleeve outer wall be positioned at before slip cap is provided with circlip groove, retaining ring for shaft shoulder is provided with in circlip groove, on retaining ring for shaft shoulder axle sleeve outer wall below, even circumferential is provided with multiple taper open-work, taper open-work is greater than the aperture at sleeve lining in the aperture of axle sleeve outer wall, is provided with a bead in each taper open-work; The inwall of slip cap front portion is provided with stop surface and stitching surface from front to back successively, and stop surface backstop is on retaining ring for shaft shoulder, and stitching surface contacts with bead and is pressed in by bead in taper open-work, and the part of bead is inwardly projected into taper open-work outside.
In a better embodiment of the present invention, the stop surface of slip cap front portion is inclined-plane, and the inner diameter of slip cap outwards increases gradually along inclined-plane.
In a better embodiment of the present invention, the end diameter 0.2-0.5mm less of the diameter of bead of taper open-work; Larger than the diameter of bead more than 1.2 times of the outside diameter of taper open-work.
In a better embodiment of the present invention, the bottom surface inside socket part is provided with rubber cushion blocks; The inwall leading edge of socket part is provided with the 4th circular cone chamfering.
In a better embodiment of the present invention, axle sleeve outer wall is positioned at a distance after slip cap and is provided with a circle backstop bulge loop; What the outer wall of described axle sleeve is positioned at backstop bulge loop is provided with the second annular groove below.
In a better embodiment of the present invention, the front portion of axle sleeve is provided with reducing diameter part, and this reducing diameter part forms first step at the outer wall of axle sleeve; Position corresponding with this reducing diameter part on described slip cap is provided with wide diameter portion, and this wide diameter portion forms second step at slip cap inwall; The annular gap between described slip cap and axle sleeve is formed between the reducing diameter part of axle sleeve, the wide diameter portion of slip cap and first, second step.
From the above mentioned, electrical bone biopsy device of the present invention is applicable to be operated by Power Drive Unit, compared with the manual biopsy needle of standard, needle tubing no choke of the present invention, and adopt power drive concordance good, avoid manual operation error, larger sample can be provided relative to the manual biopsy needle of standard, the pain produced is little, and the time used is few.This device monnolithic case adopts ergonomic designs, and handled easily, sense of touch are comfortable.Power drill/driver can repeatedly use or single use, for disposable biopsy needle provides fixing rotating speed and moment of torsion.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1: be the overall schematic of electrical bone biopsy device of the present invention.
Fig. 2: be the decomposing schematic representation of electrical bone biopsy device of the present invention.
Fig. 3: be the overall schematic of biopsy needle disposable in the present invention.
Fig. 4: be the decomposing schematic representation of biopsy needle disposable in the present invention.
Fig. 5: be the sectional view of biopsy needle disposable in the present invention.
Fig. 6: for holding up the decomposition front view of pin device in the present invention.
Fig. 7: for holding up the exploded perspective view of pin device in the present invention.
Fig. 8: for holding up the sectional view of pin device in the present invention.
Fig. 9: be biopsy needle locking device sectional view disposable in the present invention.
Figure 10: be the exploded view of biopsy needle disposable in the present invention and disposable biopsy needle locking device.
Figure 11: for biopsy needle disposable in the present invention loads the sectional view of disposable biopsy needle locking device, slip cap moves backward.
Figure 12: for biopsy needle disposable in the present invention loads the sectional view of disposable biopsy needle locking device, slip cap return.
Figure 13: be the broken section enlarged drawing of biopsy needle locking device disposable in the present invention.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
As depicted in figs. 1 and 2, the invention provides a kind of electrical bone biopsy device 1, comprise a power drill/driver 50, the outfan of this power drill/driver 50 connects disposable biopsy needle locking device 30 by an adapter coupling 40, fixing and locking once property biopsy needle 20 on disposable biopsy needle locking device 30, on this disposable biopsy needle 20, slip cap is provided with one and holds up pin device 10.The present invention is driven by power drill/driver 50, from bone or osseous tissue, take out sample.Power drill/driver 50 can provide best rotating speed and moment of torsion to obtain biopsy sample to rotate disposable biopsy needle 20.Adapter coupling 40 is combined with disposable biopsy needle locking device 30, to realize the power transmission of power drill/driver 50 and disposable biopsy needle 20.Hold up pin device 10 to slide on disposable biopsy needle 20 and to stop, realizing the accurate location of paracentesis depth, and provide a strong strong point for user, enhance the reliability obtaining biopsy sample.
Electrical bone biopsy device 1 of the present invention can provide larger sample, time that the pain of generation is little, used few relative to the hand gear of standard.This device monnolithic case adopts ergonomic designs, and handled easily, sense of touch are comfortable.Power drill/driver can repeatedly use or single use, for disposable biopsy needle provides fixing rotating speed and moment of torsion.
Further, as shown in Figures 3 to 5, disposable biopsy needle 20 comprises nook closing member part 21, needle tubing part 22 and fixed jacket 23; Nook closing member part 21 comprises nook closing member 210 and needle core base 211, and needle core base 211 is coaxially fixed on the afterbody of nook closing member 210; Needle tubing part 22 comprises needle tubing 220 and needle tubing seat 221, and the outer wall of needle tubing 220 is provided with scale accurately, and needle tubing seat 221 is coaxially fixed on the afterbody of needle tubing 220; Nook closing member 210 is coaxially located in needle tubing 220, and the head of nook closing member 210 stretches out the head of needle tubing 220, and needle tubing seat 221 rear end is resisted against needle core base 211 front end.Fixed jacket 23 is set in the outside of needle tubing seat 221 and needle core base 211 and is threaded with needle tubing seat 221; The afterbody of fixed jacket 23 is provided with rotation cooperating portion 231, and this rotation cooperating portion 231 can be the back-end closure of cylindricality polyhedron, fixed jacket 23, and the rear end of needle core base 211 is resisted against the rear end of fixed jacket 23; Be formed between needle core base 211 and fixed jacket 23 and prevent both circumferencial direction holding sections in relative rotation.Concrete, the front portion of needle core base 211 is a cylinder 2111, and cylinder 2111 rear portion is coaxially provided with multi-faceted column 2112, and this multi-faceted column 2112 can be hexahedro cylinder; The external diameter of multi-faceted column 2112 is less than cylinder 2111 external diameter.Nook closing member 210 afterbody is coaxially inserted into needle core base 211 inside and is fixedly connected with it, can be fixed by injection moulding or gluing mode.The inside and outside wall in front portion of fixed jacket 23 is cylindrical, and the rear inside wall of fixed jacket 23 and outer wall are respectively cylindricality polyhedron, are cylindricality hexahedron in present embodiment.The cylindricality hexahedron of fixed jacket 23 rear portion outer wall forms rotation cooperating portion 231, and the cylindricality hexahedron of fixed jacket 23 rear inside wall coordinates with the hexahedro cylinder 2112 at needle core base 211 rear portion and forms holding section.Needle tubing seat 221 front portion is grips 2211, grips 2211 rear end is coaxially provided with connecting portion 2212, and grips 2211 is positioned at outside fixed jacket 23, and the outer wall circumference of grips 2211 is equipped with protruding lines, person easy to use brings the operation after sterile gloves, avoids skidding.Connecting portion 2212 is cylindrical, and the outer wall of connecting portion 2212 is provided with screw thread and is connected with the female thread of fixed jacket 23 cylinder shape inner wall; Center through grips 2211 and connecting portion 2212 is provided with through hole, and needle tubing 220 afterbody coaxially to insert in this through hole and is fixedly connected with, and can be fixedly connected with by injection moulding or gluing mode.
Further, the rear end of needle tubing seat connecting portion 2212 is coaxially provided with a female Luer 2213, and female Luer 2213 is a kind of modular connection of the prior art, can connect injection or pumping equipment, to carry out necessary clinical manipulation.The inner chamber of female Luer 2213 is communicated with the central through hole of grips 2211 with connecting portion 2212; Be provided with a cylindrical cavity with one heart in the cylinder 2111 of needle core base 211 front portion, the top of needle core base cylinder 2111 is resisted against the rear end of needle tubing seat connecting portion 2212, and female Luer 2213 extend in cylindrical cavity; Be extended with a protuberance 2113 around nook closing member 210 forward bottom cylindrical cavity, it is inner that this protuberance 2113 extend into female Luer 2213, and protuberance 2113 outer wall is the coned face coordinated with female Luer 2213 inwall.Nook closing member 210 penetrates from the female Luer 2213 of needle tubing seat 221, and needle core base 211 contacts the fixing operation realizing nook closing member 210 tip and needle tubing 220 tip with needle tubing seat 221.The cylinder shape inner wall of fixed jacket 23 is provided with a circular orientation stage portion 232 that can lean with the rear end of needle tubing seat connecting portion 2212, to realize the accurate location of needle tubing seat 221.This circular orientation stage portion 232 be positioned at fixed jacket 23 cylinder shape inner wall female thread below and its internal diameter be greater than the external diameter of needle core base cylinder 2111, be less than the external diameter of needle tubing seat connecting portion 2212.The diameter of the cylindricality polyhedron inwall of fixed jacket 23 is less than the diameter of cylinder shape inner wall, and both junctions are provided with the first circular cone chamfering 233; Needle core base 211 back edge is provided with the second circular cone chamfering 2114.The back edge of fixed jacket 23 is provided with the 3rd circular cone chamfering 234; The cylindrical outer wall of fixed jacket is provided with first ring connected in star 235.
This disposable biopsy needle 20 adopts disposable mode, and head end is sharp tip, arriving the focus edge of myeloid tissue, being drawn or being gathered bone marrow or osseous tissue sample by needle tubing for penetrating tissue.
Further, as shown in Figure 6 to 8, pin device 10 is held up to comprise inner core 101, rubber parts 102 and overcoat 103; It is outside that the front end of overcoat 103 is closed, open rearward end coaxial sleeve are located at inner core 101; The center, front end of inner core 101 is provided with square groove 1011, and rubber parts 102 is square and is embedded in groove 1011; The front end of inner core 101 is resisted against the front end of overcoat 103; Center through inner core, rubber parts and overcoat is provided with the axially extending bore 104 passed through for biopsy needle.Inner core 101 and overcoat 103 are cylinder, for being rotationally connected between inner core and overcoat.The bottom of inner core 101 is provided with the first annular protrusion 1012, overcoat 103 rear end inwall is provided with the first annular groove coordinated with the first annular protrusion 1012, first annular protrusion 1012 is resisted against in the first annular groove, the bottom surface of inner core 101 flushes with the bottom surface of overcoat 103, make the mutual restriction of inner core and overcoat, ensure the safety and effectiveness of press fit arrangement.The inwall of overcoat 103 is provided with the second annular protrusion 1031, the outer wall of inner core 101 is corresponding with the second annular protrusion 1031 is provided with the second annular groove 1013, second annular protrusion 1031 is positioned at the second annular groove 1013, to realize in disposable biopsy needle 20 rotation process, hold up the inner core 101 of pin device 10 can not be separated with overcoat 103, ensure the safe and effective of this structure.Second annular protrusion 1031 rear portion is provided with level and smooth guiding surface, inner core 101 and overcoat 103 all adopt plastic material, have certain elastic deformability, inner core 101 and overcoat 103 can adopt injection mo(u)lding respectively, inner core and overcoat are axially aligned and carry out press fit arrangement.This level and smooth guiding surface can smoothly by the second annular protrusion 1031, thus make the second annular protrusion 1031 snap onto in the second annular groove 1013 when making inner core 101 load overcoat 103.The outer wall of overcoat 103 establishes irregular lines, and person easy to use brings the operation after sterile gloves, avoids skidding.The front end of overcoat 103 is provided with dismounting through hole 1032 around the surrounding of axially extending bore 104, conveniently inner core 101 and overcoat 103 is dismantled.
Inner core 101 and disposable biopsy needle 20 common rotation when this holds up pin device 10 to use, the hand steered overcoat 103 of holding of user keeps not rotating.Hold up pin device 10 can slide on disposable biopsy needle 20, needle tubing 220 has scale accurately, realize the accurate location of paracentesis depth, and provide a strong strong point for user, enhance the reliability obtaining biopsy sample.
Further, as shown in Figure 9, disposable biopsy needle locking device 30 comprises axle sleeve 301, rotating shaft 302 and slip cap 303; Axle sleeve 301 is the cylindrical shroud barrel part of open at both ends, and the rear end of axle sleeve 301 is fixedly connected with adapter coupling 40 or is integrally formed with adapter coupling 40, and is fixedly connected with and can adopts the connected mode of screw thread or the connected mode of button bit.Adapter coupling 40 is fixed on power drill/driver 50.The inwall of axle sleeve 301 is provided with annular table shoulder 3011.The front portion of rotating shaft 302 is the socket part 3021 of hollow, and rear portion is the driving connecting portion 3022 coaxial with socket part, and this driving connecting portion 3022 and the outfan of power drill/driver 50 coordinate and form power transmission and be connected.Such as, if the outfan of power drill/driver 50 is triangular form, the male end of square, the shape such as pentagon, octagon or concave end, then drive connecting portion 3022 be the shape concave end corresponding with it or male end, thus provide fixing rotating speed and moment of torsion output for disposable biopsy needle 20.The outer wall of socket part 3021 is cylindrical, and its diameter is greater than the diameter driving connecting portion 3022, and the inwall of socket part 3021 is the cylindricality polyhedron matched with the rotation cooperating portion 231 at fixed jacket 23 rear portion, and present embodiment adopts cylindricality hexahedron.The socket part 3021 of rotating shaft is coaxially arranged on the inside of axle sleeve 301, and front end, socket part 3021 is resisted against annular table shoulder 3011, and the outer wall of socket part 3021 and the contact internal walls of axle sleeve 301 also can relatively rotate; What axle sleeve 301 inwall is positioned at rear end, socket part 3021 is provided with cannelure 3012 below, and be provided with back-up ring 304 in cannelure 3012, back-up ring 304 is resisted against the rear end of socket part 3021.Back-up ring 304 and annular table shoulder 3011 countershaft 302 have carried out axial fixing and restriction, and rotating shaft 302 is rotated in axle sleeve 301.Slip cap 303 coaxial sleeve is located at the front outsides of axle sleeve 301, is formed with annular gap 308 between slip cap 303 and axle sleeve 301, and the front portion of axle sleeve 301 is provided with reducing diameter part, and this reducing diameter part forms first step at the outer wall of axle sleeve; Position corresponding with this reducing diameter part on slip cap 303 is provided with wide diameter portion, and this wide diameter portion forms second step at slip cap inwall; This annular gap 308 is formed between the reducing diameter part of axle sleeve 301, the wide diameter portion of slip cap 303 and first, second step.Compress Spring 305 is provided with in annular gap 308, Compress Spring 305 one end is resisted against on the first step of axle sleeve 301, the other end is resisted against on the second step of slip cap 303, and Compress Spring 305 promotes slip cap 303 and moves (in Figure 11, the direction of arrow indication is the direction loading disposable biopsy needle) to the axial direction loading disposable biopsy needle 20 contrary.Axle sleeve 301 outer wall be positioned at before slip cap 303 is provided with circlip groove, retaining ring for shaft shoulder 306 is provided with in circlip groove, on retaining ring for shaft shoulder 306 axle sleeve outer wall below, even circumferential is provided with multiple taper open-work 3013 (as shown in figure 13), taper open-work 3013 is greater than the aperture at sleeve lining in the aperture of axle sleeve outer wall, is provided with a bead 307 in each taper open-work 3013; The inwall of slip cap 303 front portion is provided with stop surface 3031 and stitching surface 3032 from front to back successively, this stop surface 3031 is inclined-plane, the inner diameter of slip cap 303 outwards increases gradually along inclined-plane, stop surface 3031 backstop is on retaining ring for shaft shoulder 306, as shown in figure 13, stitching surface 3032 contacts with bead 307 and is pressed in by bead in taper open-work 3013, and the part of bead is inwardly projected into taper open-work outside.
Further, the end diameter of taper open-work 3013 is less than the diameter 0.2-0.5mm of bead 307; The outside diameter of taper open-work 3013 is greater than the diameter more than 1.2 times of bead 307, and as shown in figure 13, bead 307 can move freely between the taper open-work 3013 of slip cap 303 inner chamber and axle sleeve 301.Bottom surface in socket part 3021 is provided with rubber cushion blocks 3023; The inwall leading edge of socket part 3021 is provided with the 4th circular cone chamfering 3024.Axle sleeve 301 outer wall is positioned at slip cap 303 and is provided with a circle backstop bulge loop 3015 in a distance below; What the outer wall of axle sleeve 301 is positioned at backstop bulge loop 3015 is provided with the second annular groove 3014 below.
On condition that an external force is not applied, Compress Spring 305 promotes slip cap 303 and moves to the opposite shaft orientation direction loading disposable biopsy needle 20, and when the stop surface 3031 of slip cap contacts with retaining ring for shaft shoulder 306, the mobile of slip cap 303 stops.Now the stitching surface 3032 of slip cap 303 is tangent with bead 307, bead 307 is oppressed in the taper open-work 3013 of axle sleeve 301, bead 307 tightly contacts with taper open-work 3013 small end, the part of bead 307 exceeds the small end of taper open-work 3013, can with first ring connected in star 235 snap-fit engagement on the cylindrical outer wall of fixed jacket.The second annular groove 3014 on axle sleeve 301 outer wall is that sterility protection cover is enclosed within power drill/driver, is connected on the second annular groove 3014 by the annular snap buckle of seam for clinical sterility protection cover is reserved.
As shown in Figure 10 and Figure 11, with hands external force applied to slip cap 303 and keep, the equidirectional that slip cap is loaded along axle sleeve 301 to disposable biopsy needle 20 moves, after slip cap 303 moves a certain distance backward, can backstop on backstop bulge loop 3015, slip cap moves stopping, now Compress Spring 305 is in compressive state, bead 307 is subject to the impact of gravity and axle sleeve 301 taper open-work 3013, automatically the small end of taper open-work 3013 is left and the large end tumbled to taper open-work 3013, the inner chamber that bead 307 part exceeds the large end of taper open-work 3013 and slip cap 303 is tangent.Then disposable biopsy needle 20 is loaded disposable biopsy needle locking device 30.Unclamp hands externally applied forces, now slip cap 303 is under the effect not having external force, Compress Spring 305 promotes slip cap 303 and moves to the opposite shaft orientation direction loading disposable biopsy needle 20, and when the stop surface 3031 of slip cap 303 contacts with retaining ring for shaft shoulder 306, slip cap 303 moves stopping.Now the stitching surface 3032 of slip cap 303 is tangent with bead 307, bead 307 is oppressed in the taper open-work 3013 of axle sleeve 301, bead 307 tightly contacts with the small end of taper open-work 3013, the part of bead 307 exceeds taper open-work 3013 small end, exceed the first ring connected in star 235 interior (as shown in figure 12) that part snaps in disposable biopsy needle 20 fixed jacket 23, limit moving axially of disposable biopsy needle 20, now disposable biopsy needle 20 can not shift out in disposable biopsy needle locking device 30.In order to eliminate gap, realize the accuracy of disposable biopsy needle 20 in displacement, the rubber cushion blocks 3023 being arranged on rotating shaft 302 socket part 3021 inner bottom surface fits tightly with fixed jacket 23 rear end face of disposable biopsy needle 20, to eliminate gap.
From the above mentioned, electrical bone biopsy device of the present invention is applicable to be operated by Power Drive Unit, compared with the manual biopsy needle of standard, needle tubing no choke of the present invention, and adopt power drive concordance good, avoid manual operation error, larger sample can be provided relative to the manual biopsy needle of standard, the pain produced is little, and the time used is few.This device monnolithic case adopts ergonomic designs, and handled easily, sense of touch are comfortable.Power drill/driver: adopt multiplexing or disposable form, for disposable biopsy needle provides fixing rotating speed and moment of torsion.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (19)
1. an electrical bone biopsy device, it is characterized in that: described electrical bone biopsy device comprises a power drill/driver, the outfan of this power drill/driver connects disposable biopsy needle locking device by an adapter coupling, fixing and locking once property biopsy needle on described disposable biopsy needle locking device, on this disposable biopsy needle, slip cap is provided with one and holds up pin device.
2. electrical bone biopsy device as claimed in claim 1, is characterized in that: described disposable biopsy needle comprises nook closing member part, needle tubing part and fixed jacket; Described nook closing member part comprises nook closing member and needle core base, and needle core base is coaxially fixed on the afterbody of nook closing member; Needle tubing part comprises needle tubing and needle tubing seat, and needle tubing seat is coaxially fixed on the afterbody of needle tubing; Described nook closing member is coaxially located in needle tubing, and the head of nook closing member stretches out the head of needle tubing, and described needle tubing base rear end is resisted against needle core base front end; Described fixed jacket is set in the outside of needle tubing seat and needle core base and is threaded with needle tubing seat; The afterbody of fixed jacket is provided with rotation cooperating portion, and the back-end closure of fixed jacket, the rear end of needle core base is resisted against the rear end of fixed jacket; Be formed between described needle core base and fixed jacket and prevent both circumferencial direction holding sections in relative rotation.
3. electrical bone biopsy device as claimed in claim 2, it is characterized in that: the front portion of described needle core base is a cylinder, and cylindrical rear portion is coaxially provided with multi-faceted column, the external diameter of multi-faceted column is less than cylinder external diameter; Described nook closing member afterbody is coaxially inserted into needle core base inside and is fixedly connected with it; The inside and outside wall in front portion of described fixed jacket is cylindrical, the rear inside wall of fixed jacket and outer wall are respectively cylindricality polyhedron, the cylindricality polyhedron of described fixed jacket rear portion outer wall forms described rotation cooperating portion, and the cylindricality polyhedron of described fixed jacket rear inside wall coordinates with the multi-faceted column at needle core base rear portion and forms described holding section.
4. electrical bone biopsy device as claimed in claim 3, is characterized in that: described needle tubing seat front portion is grips, and grips rear end is coaxially provided with connecting portion, and grips is positioned at outside fixed jacket, and the outer wall circumference of grips is equipped with protruding stricture of vagina road; Described connecting portion is cylindrical, and the outer wall of connecting portion is provided with screw thread and is connected with the female thread of fixed jacket cylinder shape inner wall; Center through described grips and connecting portion is provided with through hole, and needle tubing afterbody coaxially to insert in this through hole and is fixedly connected with.
5. electrical bone biopsy device as claimed in claim 4, is characterized in that: the rear end of described needle tubing seat connecting portion is coaxially provided with a female Luer, and the inner chamber of female Luer is communicated with described through hole; Be provided with a cylindrical cavity with one heart in the cylinder of needle core base front portion, the cylindrical top of described needle core base is resisted against the rear end of needle tubing seat connecting portion, and described female Luer extend in cylindrical cavity; Be extended with a protuberance around nook closing member forward bottom cylindrical cavity, this protuberance extend into female Luer inside, and protuberance outer wall is the coned face coordinated with described female Luer inwall.
6. electrical bone biopsy device as claimed in claim 5, it is characterized in that: the cylinder shape inner wall of described fixed jacket is provided with a circular orientation stage portion that can lean with the rear end of needle tubing seat connecting portion, this circular orientation stepped portions in fixed jacket cylinder shape inner wall female thread below and its internal diameter be greater than the cylindrical external diameter of needle core base, be less than the external diameter of needle tubing seat connecting portion.
7. electrical bone biopsy device as claimed in claim 6, is characterized in that: the diameter of the cylindricality polyhedron inwall of described fixed jacket is less than the diameter of cylinder shape inner wall, and both junctions are provided with the first circular cone chamfering; Described needle core base back edge is provided with the second circular cone chamfering.
8. the electrical bone biopsy device according to any one of claim 2 to 7, is characterized in that: the back edge of described fixed jacket is provided with the 3rd circular cone chamfering; The cylindrical outer wall of fixed jacket is provided with first ring connected in star; The outer wall of described needle tubing is provided with scale.
9. electrical bone biopsy device as claimed in claim 1, is characterized in that: described in hold up pin device to comprise inner core, rubber parts and overcoat; The front end of described overcoat is closed, open rearward end coaxial sleeve is located at inner core outside; The center, front end of inner core is provided with groove, and rubber parts is embedded in described groove; The front end of inner core is resisted against the front end of overcoat; Center through described inner core, rubber parts and overcoat is provided with the axially extending bore passed through for biopsy needle.
10. electrical bone biopsy device as claimed in claim 9, is characterized in that: described inner core and overcoat are cylinder, for turning set is connected together between inner core and overcoat.
11. electrical bone biopsy devices as claimed in claim 10, it is characterized in that: the bottom of described inner core is provided with the first annular protrusion, described overcoat rear end inwall is provided with the first annular groove of the annular male cooperation with first, first annular protrusion is resisted against in the first annular groove, and the bottom surface of inner core flushes with the bottom surface of overcoat.
12. electrical bone biopsy devices as claimed in claim 11, is characterized in that: the inwall of described overcoat is provided with the second annular protrusion, the outer wall of described inner core is corresponding with the second annular protrusion is provided with the second annular groove, and the second annular protrusion is positioned at the second annular groove.
13. electrical bone biopsy devices as claimed in claim 12, is characterized in that: the outer wall of described overcoat establishes irregular lines, and the front end of overcoat is provided with dismounting through hole around the surrounding of described axially extending bore; The groove of inner core front end and rubber parts are square.
14. electrical bone biopsy devices as claimed in claim 8, is characterized in that: described disposable biopsy needle locking device comprises axle sleeve, rotating shaft and slip cap; Described axle sleeve is the cylindrical shroud barrel part of open at both ends, and the rear end of axle sleeve is fixedly connected with adapter coupling or is integrally formed with adapter coupling; The inwall of axle sleeve is provided with annular table shoulder; The front portion of rotating shaft is the socket part of hollow, and the rear portion of rotating shaft is the driving connecting portion coaxial with socket part; The outer wall of described socket part is cylindrical, and its diameter is greater than the diameter driving connecting portion, and the inwall of socket part is the cylindricality polyhedron matched with the rotation cooperating portion at described fixed jacket rear portion; The socket part of rotating shaft is coaxially arranged on the inside of axle sleeve, and front end, socket part is resisted against annular table shoulder, and the outer wall of socket part and the contact internal walls of axle sleeve also can relatively rotate; What sleeve lining is positioned at rear end, socket part is provided with cannelure below, and be provided with back-up ring in cannelure, back-up ring is resisted against the rear end of socket part; Slip cap coaxial sleeve is located at the front outsides of axle sleeve, is formed with annular gap between slip cap and axle sleeve, is provided with Compress Spring in annular gap, and Compress Spring one end is resisted against on axle sleeve, the other end is resisted against on slip cap; The axle sleeve outer wall be positioned at before slip cap is provided with circlip groove, retaining ring for shaft shoulder is provided with in circlip groove, on retaining ring for shaft shoulder axle sleeve outer wall below, even circumferential is provided with multiple taper open-work, taper open-work is greater than the aperture at sleeve lining in the aperture of axle sleeve outer wall, is provided with a bead in each taper open-work; The inwall of slip cap front portion is provided with stop surface and stitching surface from front to back successively, and stop surface backstop is on retaining ring for shaft shoulder, and stitching surface contacts with bead and is pressed in by bead in taper open-work, and the part of bead is inwardly projected into taper open-work outside.
15. electrical bone biopsy devices as claimed in claim 14, is characterized in that: the stop surface of described slip cap front portion is inclined-plane, and the inner diameter of slip cap outwards increases gradually along inclined-plane.
16. electrical bone biopsy devices as claimed in claim 15, is characterized in that: the end diameter 0.2-0.5mm less of the diameter of bead of described taper open-work; Larger than the diameter of bead more than 1.2 times of the outside diameter of taper open-work.
17. electrical bone biopsy devices as claimed in claim 16, is characterized in that: the bottom surface inside described socket part is provided with rubber cushion blocks; The inwall leading edge of socket part is provided with the 4th circular cone chamfering.
18. electrical bone biopsy devices as claimed in claim 17, is characterized in that: described axle sleeve outer wall is positioned at a distance after slip cap and is provided with a circle backstop bulge loop; What the outer wall of described axle sleeve is positioned at backstop bulge loop is provided with the second annular groove below.
19. electrical bone biopsy devices as claimed in claim 14, is characterized in that: the front portion of described axle sleeve is provided with reducing diameter part, and this reducing diameter part forms first step at the outer wall of axle sleeve; Position corresponding with this reducing diameter part on described slip cap is provided with wide diameter portion, and this wide diameter portion forms second step at slip cap inwall; The annular gap between described slip cap and axle sleeve is formed between the reducing diameter part of axle sleeve, the wide diameter portion of slip cap and first, second step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179817.4A CN104739457B (en) | 2015-04-16 | 2015-04-16 | Electric bone biopsy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510179817.4A CN104739457B (en) | 2015-04-16 | 2015-04-16 | Electric bone biopsy device |
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| Publication Number | Publication Date |
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| CN104739457A true CN104739457A (en) | 2015-07-01 |
| CN104739457B CN104739457B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510179817.4A Active CN104739457B (en) | 2015-04-16 | 2015-04-16 | Electric bone biopsy device |
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| CN109620306B (en) * | 2019-01-14 | 2024-01-02 | 苏州市立普医疗科技有限公司 | Biopsy needle and puncture biopsy device |
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| Publication number | Publication date |
|---|---|
| CN104739457B (en) | 2017-04-12 |
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