CN210277232U - Sampling tool for bone marrow biopsy - Google Patents

Sampling tool for bone marrow biopsy Download PDF

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Publication number
CN210277232U
CN210277232U CN201920179772.4U CN201920179772U CN210277232U CN 210277232 U CN210277232 U CN 210277232U CN 201920179772 U CN201920179772 U CN 201920179772U CN 210277232 U CN210277232 U CN 210277232U
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CN
China
Prior art keywords
pincers
clamp
hole
needle core
structures
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Expired - Fee Related
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CN201920179772.4U
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Chinese (zh)
Inventor
李哲
崔亚娟
郭鹏翔
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Guizhou Provincial Peoples Hospital
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Guizhou Provincial Peoples Hospital
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Priority to CN201920179772.4U priority Critical patent/CN210277232U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model provides a marrow biopsy sampling tool, this instrument is by two half pincers structures middle parts articulated pincers body structure that forms mutually, and for detachable connection between two half pincers structures, the cross section of the pincers mouth of two half pincers structures is the semiannulus, and when this pincers body structure was closed, formed the nook closing hole that sets up along this pincers body length direction between the closed pincers mouth, and offered the screw hole coaxial with nook closing hole on the pincers handle of one of them half pincers structure, the articulated department of two half pincers structures and the axial dislocation set in nook closing hole to avoid articulated department to interfere with the nook closing member mutually, the front end of pincers mouth is the sawtooth sword column structure that sets up along the hoop, and the nook closing member is worn to locate in screw hole and nook closing member, and the most advanced of nook closing member stretches out through the nook closing member hole of pincers mouth end, nook closing member and screw hole threaded connection. The bone marrow sampling tool solves the problems that the existing bone marrow sampling tool has more operation steps, is inconvenient to use, has poor sampling integrity, is difficult to take out a sample by an instrument and the like. Belongs to the field of medical appliances.

Description

Sampling tool for bone marrow biopsy
Technical Field
The utility model relates to an improvement of marrow biopsy sampling tool belongs to the medical appliances field.
Background
At present, the sampling method of the existing bone specimen is to utilize the hollow sampling tube awl to go into the intraosseous sampling (similar to the awl instrument of beating into the bone), take out the back, reuse the needle body to push out the sample in the hollow sampling tube, this sampling instrument is inconvenient to use, use and not conform to ergonomic, be difficult for stabbing into the bone, be difficult for pulling out after stabbing, and even if stab into the intraosseous, the sample is often not taken out along with the sleeve, but remain in vivo, and even if take out the sample, the sample of taking out in the sleeve is often accompanied with cracked, or the sample is incomplete, and simultaneously, because of the unreasonable design of holding the handle, under the condition of wearing aseptic gloves operation, the device that stabs into the bone is difficult for pulling out after getting the sample, it is very.
Disclosure of Invention
The utility model aims to provide a: the utility model provides a marrow biopsy sampling tool to solve present marrow sample sampling tool operating procedure more, it is inconvenient to use, gets the sample integrity relatively poor, the sample is difficult for being taken out scheduling problem by the apparatus.
In order to solve the problems, the sampling tool for the bone marrow biopsy is supposed to be adopted, the sampling tool is a clamp body structure formed by hinging the middle parts of two half clamp structures, the two half clamp structures are connected in a separable mode, the cross sections of clamp mouths of the two half clamp structures are semi-annular, when the clamp body structure is closed, a needle core hole arranged along the length direction of the clamp body structure is formed between the closed clamp mouths, a first threaded hole coaxial with the needle core hole is formed in a clamp handle of one of the half clamp structures, the hinged parts of the two half clamp structures and the needle core hole are arranged in an axially staggered mode, the front ends of the clamp mouths are saw-tooth-edge-shaped structures arranged along the annular direction, a needle core penetrates through the threaded hole and the needle core hole, the tip end of the needle core extends out of the needle core hole at the end of the clamp mouth, and the needle core is in threaded connection with the threaded hole.
In the bone marrow biopsy sampling tool, the forceps handles on the two half forceps structures are annular forceps handles, one of the forceps handles is a four-finger forceps handle, annular finger holes in the four-finger forceps handle are used for penetrating finger holes of other four fingers except a thumb and are used as a palm holding part, the other forceps handle is a thumb forceps handle, the annular finger holes in the thumb forceps handle are used for penetrating finger holes of the thumb, the first threaded hole is formed in the four-finger forceps handle, a second threaded hole is further formed in the middle of the half forceps structure where the thumb forceps handle is located, the second threaded hole is coaxial with the first threaded hole, and the second threaded hole and the first threaded hole are matched with the external threads of the needle core.
In the above bone marrow biopsy sampling tool, when the forceps body structure is closed, a gap is formed between the two forceps tips, and the width of the gap on both sides is gradually increased from the forceps tip end to the forceps handle end.
In the above bone marrow biopsy sampling tool, the radian of the cross section of the front end of the forceps mouth is 160-170 degrees.
Among the aforementioned marrow biopsy sampling tool, still including latch device, the opposite side of two pincers handles relative with pincers mouth place direction has all seted up spacing hole, the latch device on have two with two pincers handle on spacing hole assorted spacing archs, wherein set up the through-hole of more than or equal to the nook closing member diameter on the spacing arch that four indicate pincers handle corresponds, the axial of through-hole is unanimous with the screw in direction of nook closing member, is equipped with the spacing lug of a rectangular shape between two spacing archs, when pincers body structure closed, spacing lug card is located between two pincers handles, two spacing archs on the latch device block locate two spacing downtheholely respectively.
Among the aforementioned marrow biopsy sampling tool, the inboard of pincers mouth front end has cyclic annular barb, and cyclic annular barb is the sword form, cascaded ring groove has been seted up along the hoop to the pointed end of nook closing member, and the cyclic annular barb and the ring groove phase-match of pincers mouth front end, and the cyclic annular barb card of pincers mouth front end is located in the ring groove.
The use method of the bone marrow biopsy sampling tool comprises the following steps: before drilling into a bone to take a specimen, firstly, assembling the components into a whole, specifically, closing two half-clamp structures, installing a clamping lock device, sequentially screwing a needle core into a first threaded hole, a second threaded hole and a needle core hole to realize locking among the components to form a whole, extending the tip of the needle core out of the needle core hole at the clamp mouth end, holding a clamp handle by an operator to ensure that the clamp mouth end and the tip of the needle core penetrate into cortex and break through the cortex lycii, extracting the needle core, continuously drilling into the bone by using a saw-blade-shaped structure which is annularly arranged at the clamp mouth end, removing the clamping lock device after drilling into a specified position, tightening the clamp handle and further contracting the clamp mouth, reducing a gap between the front ends of the two clamp mouths due to incomplete fitting of the two clamp mouths, ensuring that the diameter of the front end of a barrel body formed by the two clamp mouths is smaller than that the rear end of the barrel body formed by the two clamp mouths has a certain taper, bone tissue roll-off in can further avoiding pincers mouth, then, along the rotatory pincers mouth of hoop, the annular barb through pincers mouth front end cuts off bone tissue, makes bone tissue and outside bone tissue separation in the pincers mouth, and takes out this pincers body structure after grabbing of sample claw, takes out the back, with two half pincers structure separation, or transfer the distance of two pincers mouth front ends, with the marrow sample by taking out in the pincers mouth can.
Compared with the prior art, the utility model utilizes two half-clamp structures to manufacture the combined bone specimen sampling tool, the two half-clamp structures are in modular design, and are convenient to assemble and disassemble, on one hand, the tool is convenient to maintain, clean and disinfect, and on the other hand, the bone specimen is convenient to take out from the tool; the design of the locking and locking devices at three positions enables all the modules to be tightly combined into a whole, so that the puncturing operation is convenient; when a specimen is taken, the clamp end is of an annular sawtooth blade-shaped structure, so that the bone tissue is conveniently drilled and cut, and the specimen is prevented from being broken; the annular boss barb structure (specimen claw) at the front end of the forceps nozzle is designed to facilitate cutting off the bone tissue in the device, and the barb-shaped specimen claw grips the specimen after cutting off, so that the specimen is not easy to fall off, and the specimen is prevented from remaining in the body; the grip of the clamp handle structure is similar to a grab handle of scissors for cutting, the design is more in line with human engineering, the operation is more convenient, the insertion and the extraction are convenient, the advantages are very obvious compared with the existing sampling tool, and the clamp handle structure has good popularization value.
Drawings
FIG. 1 is a schematic view of the structure of the present invention (inserting the stylet) from the front;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of the hub;
FIG. 4 is a schematic structural view of the device for removing the locking device of the stylet of the present invention;
FIG. 5 is a schematic view of the latch mechanism;
FIG. 6 is a right side view of FIG. 1;
FIG. 7 is a right side view of one of the jaw halves of FIG. 1;
FIG. 8 is a right side elevational view of an alternative half-plier construction of FIG. 1;
FIG. 9 is a front view of the half-plier structure shown in FIG. 7;
fig. 10 is a front view of the half-plier structure shown in fig. 8.
Detailed Description
To further clarify the objects, technical solutions and advantages of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings.
Examples
Referring to fig. 1 to 10, the present embodiment provides a sampling tool for biopsy of bone marrow, which is a forceps structure formed by two half forceps structures 1 hinged to each other at the middle, and the two half forceps structures 1 are detachably connected (see application No. CN201710220864.8, the patent name "a detachable hinge structure of orthopedic osteotomy tool and method for using the same", the hinge structure of the present application is different from the main plane of the forceps structure in that the hinge of the present application deviates from the main plane of the forceps structure, so as to avoid interference between a needle body passing through the forceps body and the hinge), the cross section of the jaws 11 of the two half forceps structures 1 is semi-annular, when the forceps structures are closed, a needle core hole 12 is formed between the closed jaws 11, and a first threaded hole 14 coaxial with the needle core hole 12 is formed on the handle 13 of one of the half forceps structures 1, the hinged part of the two half-clamp structures 1 and the axial direction of the needle core hole 12 are arranged in a staggered mode so as to avoid the interference of the hinged part and the needle core, the front end of the clamp mouth 11 is a sawtooth-edge-shaped structure arranged along the annular direction, the needle core 2 penetrates through the threaded hole 14 and the needle core hole 12, the tip end of the needle core 2 extends out of the needle core hole 12 at the end of the clamp mouth, and the needle core 2 is in threaded connection with the threaded hole 14.
The forceps handles 13 on the two half forceps structures 1 are both annular forceps handles, one of the forceps handles 13 is a four-finger forceps handle 131, annular finger holes on the four-finger forceps handle 131 are finger holes for passing through other four fingers except a thumb and are palm holding parts, the other forceps handle 13 is a thumb forceps handle 132, the annular finger holes on the thumb forceps handle 132 are finger holes for passing through the thumb, the first threaded hole 14 is opened on the four-finger forceps handle 131, a second threaded hole 17 is also opened in the middle part (a double forceps body hinged shaft part) of the half forceps structure 1 where the thumb forceps handle 132 is located, the second threaded hole 17 is coaxial with the first threaded hole 14, the second threaded hole 17 and the first threaded hole 14 are both matched with the external thread of the needle core 2, when the forceps body structures are closed, a gap is formed between the two forceps tips 11, the width of the gaps on two sides is gradually increased from the forceps tip ends to the forceps handle ends, the cross section of the front ends of the forceps tips 11 is 160 degrees 170 degrees, therefore, the clamp body structure is convenient to tighten when closed, and the width of a gap between the two clamp mouths 11 is gradually increased from the clamp mouth end to the clamp handle end.
The other sides of the two forceps handles 13 opposite to the direction of the forceps mouth 11 are provided with limiting holes 16, the locking device 3 is provided with two limiting bulges 31 matched with the limiting holes 16 on the two forceps handles 13, wherein the limiting bulges 31 corresponding to the four-finger forceps handles 131 are provided with through holes 32 with the diameter larger than or equal to that of the needle core 2, the axial direction of the through holes 32 is consistent with the screwing-in direction of the needle core 2, a long strip-shaped limiting lug 33 is arranged between the two limiting bulges 31, when the forceps body structure is closed, the limiting lugs 33 are clamped between the two forceps handles, the two limiting bulges 31 on the locking device 3 are respectively clamped in the two limiting holes 16, and the locking of the position of the forceps body is realized through the locking device 3.
The inboard of pincers mouth 11 front end has cyclic annular barb 15, and cyclic annular barb 15 is the sword form, and this structure is similar to exploration equipment rock core claw, and the front end is cyclic annular sawtooth structure, and the inboard has cyclic annular boss, and one side of cyclic annular boss 11 front ends pincers mouth dorsad also is sword column structure for the bone specimen of 11 departments of cutting pincers mouth, so that the bone specimen and the outside bone separation in the pincers mouth 11, cascaded ring groove 21 has been seted up along the hoop to the pointed end of needle core 2, and the cyclic annular barb 15 and the ring groove 21 phase-match of 11 front ends of pincers mouth, and the cyclic annular barb 15 card of 11 front ends of pincers mouth is located in ring groove 21.
The use method of the bone marrow biopsy sampling tool comprises the following steps: before drilling into a bone to take a specimen, the components are firstly assembled into a whole, specifically, two half forceps structures 1 are closed, a clamping lock device 3 is installed, a needle core 2 is sequentially screwed into a first threaded hole 14, a second threaded hole 17 and a needle core hole 12 to realize locking among the components to form a whole, the tip of the needle core 2 extends out of the needle core hole 12 at the forceps mouth end, an operator holds a forceps handle 13 to ensure that the forceps mouth end and the tip of the needle core 2 penetrate into and break through cortical bone, after the cortical bone is broken through, the needle core 2 is pulled out, the forceps mouth end continues to drill into the bone along a saw-tooth-edge-shaped structure arranged annularly, after the forceps mouth is drilled into a designated position, the clamping lock device 3 is removed to tighten the forceps handle and then the forceps mouth is contracted, because the two forceps mouths 11 are not completely buckled (a gap is formed between the two forceps mouths 11), the gap between the front ends of the two forceps mouths 11 is reduced, and the diameter of the front end of a barrel body formed by the two, make the barrel that two pincers mouths 11 are constituteed have certain tapering, can further avoid the bone tissue roll-off in the pincers mouth 11, then, along the rotatory pincers mouth 11 of hoop, cut off bone tissue through the cyclic annular barb 15 of pincers mouth 11 front end, make the bone tissue and the separation of outside bone tissue in the pincers mouth 11, and take out this pincers body structure after grabbing of sample claw, take out the back, with two half pincers structures 1 separation, or increase the distance of two pincers mouths 11 front ends, with the marrow sample by taking out in the pincers mouth 11 can.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. A sampling tool for bone marrow biopsy, comprising: the tool is a clamp body structure formed by hinging the middle parts of two half clamp structures (1), the two half clamp structures (1) are connected in a separable way, the cross sections of clamp mouths (11) of the two half clamp structures (1) are semi-annular, when the pincer body structure is closed, a needle core hole (12) arranged along the length direction of the pincer body structure is formed between the closed pincer mouths (11), and a first threaded hole (14) which is coaxial with the needle core hole (12) is arranged on the forceps handle (13) of one of the half forceps structures (1), the hinged part of the two half-clamp structures (1) and the axial direction of the needle core hole (12) are arranged in a staggered way, the front ends of the clamp mouths (11) are all sawtooth-edge-shaped structures arranged along the annular direction, the needle core (2) is arranged in the first threaded hole (14) and the needle core hole (12) in a penetrating way, the tip of the needle core (2) extends out of the needle core hole (12) at the jaw end, and the needle core (2) is in threaded connection with the first threaded hole (14).
2. The sampling tool for bone marrow biopsy according to claim 1, wherein: the clamp handles (13) on the two half clamp structures (1) are annular clamp handles, one of the clamp handles (13) is a four-finger clamp handle (131), annular finger holes in the four-finger clamp handle (131) are finger holes for penetrating other four fingers except the thumb, the other clamp handle (13) is a thumb clamp handle (132), the annular finger holes in the thumb clamp handle (132) are finger holes for penetrating the thumb, the first threaded hole (14) is formed in the four-finger clamp handle (131), a second threaded hole (17) is further formed in the middle of the half clamp structure (1) where the thumb clamp handle (132) is located, the second threaded hole (17) is coaxial with the first threaded hole (14), and the second threaded hole (17) and the first threaded hole (14) are matched with the external threads of the needle core (2).
3. The sampling tool for bone marrow biopsy according to claim 1, wherein: when the clamp body structure is closed, a gap is formed between the two clamp mouths (11), and the width of the gap on the two sides is gradually increased from the clamp mouth end to the clamp handle end.
4. The sampling tool for bone marrow biopsy according to claim 3, wherein: the radian of the cross section of the front end of the forceps mouth (11) is 160 degrees and 170 degrees.
5. The sampling tool for bone marrow biopsy according to claim 2, wherein: still including latch device (3), spacing hole (16) have all been seted up with the opposite side of two pincers handles (13) that pincers mouth (11) place direction is relative, latch device (3) are gone up have two and two pincers handle (13) on spacing hole (16) assorted spacing arch (31), wherein set up through-hole (32) more than or equal to needle core (2) diameter on the spacing arch (31) that four fingers pincers handle (131) correspond, the axial of through-hole (32) is unanimous with the screw-in direction of needle core (2), be equipped with the spacing lug (33) of a rectangular shape between two spacing arch (31), when pincers body structure closure, spacing lug (33) block is located between two pincers handles, two spacing arch (31) on latch device (3) block respectively locate in two spacing hole (16).
6. The sampling tool for bone marrow biopsy according to claim 1, wherein: the inboard of pincers mouth (11) front end has cyclic annular barb (15), and cyclic annular barb (15) are the sword form, cascaded ring groove (21) have been seted up along the hoop to the pointed end of nook closing member (2), and pincers mouth (11) front end cyclic annular barb (15) and ring groove (21) phase-match, and pincers mouth (11) front end cyclic annular barb (15) card is located in ring groove (21).
CN201920179772.4U 2019-02-01 2019-02-01 Sampling tool for bone marrow biopsy Expired - Fee Related CN210277232U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920179772.4U CN210277232U (en) 2019-02-01 2019-02-01 Sampling tool for bone marrow biopsy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920179772.4U CN210277232U (en) 2019-02-01 2019-02-01 Sampling tool for bone marrow biopsy

Publications (1)

Publication Number Publication Date
CN210277232U true CN210277232U (en) 2020-04-10

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CN201920179772.4U Expired - Fee Related CN210277232U (en) 2019-02-01 2019-02-01 Sampling tool for bone marrow biopsy

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109602461A (en) * 2019-02-01 2019-04-12 贵州省人民医院 A kind of bone marrow biopsy device and its application method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109602461A (en) * 2019-02-01 2019-04-12 贵州省人民医院 A kind of bone marrow biopsy device and its application method
CN109602461B (en) * 2019-02-01 2023-11-17 贵州省人民医院 Bone marrow biopsy device and use method thereof

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Granted publication date: 20200410

Termination date: 20210201