CN109106405B - Bone marrow biopsy needle set - Google Patents
Bone marrow biopsy needle set Download PDFInfo
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- CN109106405B CN109106405B CN201811178779.0A CN201811178779A CN109106405B CN 109106405 B CN109106405 B CN 109106405B CN 201811178779 A CN201811178779 A CN 201811178779A CN 109106405 B CN109106405 B CN 109106405B
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- 210000001185 bone marrow Anatomy 0.000 title claims abstract description 55
- 238000001574 biopsy Methods 0.000 title claims abstract description 19
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 206010048038 Wound infection Diseases 0.000 abstract description 5
- 241000894006 Bacteria Species 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 abstract description 3
- 210000000988 bone and bone Anatomy 0.000 description 6
- 238000003745 diagnosis Methods 0.000 description 6
- 210000001519 tissue Anatomy 0.000 description 5
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 206010027476 Metastases Diseases 0.000 description 3
- 206010052428 Wound Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003394 haemopoietic effect Effects 0.000 description 3
- 230000009401 metastasis Effects 0.000 description 3
- 208000032467 Aplastic anaemia Diseases 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 201000003793 Myelodysplastic syndrome Diseases 0.000 description 2
- 241000224016 Plasmodium Species 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000003748 differential diagnosis Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000003211 malignant effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 241000205585 Aquilegia canadensis Species 0.000 description 1
- 206010058822 Bone marrow necrosis Diseases 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 208000034578 Multiple myelomas Diseases 0.000 description 1
- 206010035226 Plasma cell myeloma Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 210000000577 adipose tissue Anatomy 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000601 blood cell Anatomy 0.000 description 1
- 238000009583 bone marrow aspiration Methods 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 208000018706 hematopoietic system disease Diseases 0.000 description 1
- 210000002758 humerus Anatomy 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 201000007119 infective endocarditis Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 208000032839 leukemia Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000013188 needle biopsy Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000010827 pathological analysis Methods 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 210000001991 scapula Anatomy 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 210000001562 sternum Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/025—Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/025—Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
- A61B2010/0258—Marrow samples
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Rheumatology (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a bone marrow biopsy needle set, which comprises a trocar, a circular cutting needle tube and a core rod. Wherein, the sleeve needle is tubular, the front end is an inclined plane, the rear end is fixed with a sleeve needle seat, and the symmetrical positions of the two side edges of the sleeve needle seat are provided with sleeve needle seat side clamping grooves. The front end of the circular cutting needle tube is provided with a circular cutting tool bit, the rear side of the circular cutting tool bit is fixed with a needle tube seat, and two sides of the needle tube seat are respectively fixed with a needle tube seat side clamping groove through connecting rods. The core bar handle fixed at the rear end of the core bar is matched and clamped in the clamping groove in the needle tube seat, and two sides of the core bar handle are bent forwards to form a U-shaped structure which can be matched and inserted in the side clamping groove of the needle tube seat and the side clamping groove of the needle tube seat. The invention can not generate the operation process of inserting new components after extracting corresponding components when in use, has no factors for introducing external bacteria, achieves the aim of thoroughly preventing wound infection and further improves medical safety. The invention has reasonable structural design, simple and convenient operation and can improve the sampling operation efficiency.
Description
Technical Field
The invention belongs to the technical field of bone marrow examination instruments, and particularly relates to a bone marrow biopsy needle set.
Background
Bone marrow examination is one of the clinically common diagnostic examination methods that is easy to popularize and effective. Bone marrow examination can be used for diagnosis of hematopoietic diseases such as differential diagnosis of leukemia, differential diagnosis of various anemias, diagnosis of multiple myeloma and platelet increasing or decreasing diseases. Bone marrow examination can also be used for bone marrow culture in the case of certain infectious diseases such as infectious endocarditis to help increase the positive rate of diagnosis of the disease, and in the case of infection of plasmodium and plasmodium with kalback disease, bone marrow examination helps to find the protozoa and make a clear diagnosis. In some malignant tumors, bone marrow examination can be used to determine whether there is bone marrow metastasis, as bone marrow is a good site for metastasis of many malignant tumors. A diagnostic test method which is easy to popularize and effective and is commonly used clinically.
Bone marrow examination is divided into two types, bone marrow aspiration and bone marrow biopsy. Bone marrow penetration is an examination by drawing a small amount of bone marrow. Bone marrow is filled in marrow cavity and cancellous bone mesh, and is divided into red bone marrow and yellow bone marrow. Red bone marrow has hematopoietic function and yellow bone marrow has a large amount of adipose tissue. With age, the red bone marrow in the intramedullary canal is gradually replaced by yellow bone marrow. The red bone marrow remains in the vertebral canal, sternum, rib, collarbone, scapula, ilium, skull, femur and upper spongy mass of humerus, and is the main hematopoietic organ of human body, and the abnormality of the quality and quantity of blood cells is an important pathological change of hematopathy. The bone marrow biopsy can make up the deficiency of bone marrow puncture, and the biopsy material is large, so that not only can the cell components in the bone marrow be known, but also the bone marrow structure can be maintained, malignant cells are easy to recognize, and the pathological diagnosis is convenient. Diagnosis of other diseases requires knowledge of bone marrow tissue structure, such as aplastic anemia, myelodysplastic syndrome, malignant bone marrow metastasis, and the like, and myelopathological examination. Bone marrow biopsy has certain significance for understanding the quantity of bone marrow hematopoietic tissues in aplastic anemia; the phenomenon of abnormal primitive cell distribution (ALIP) in bone marrow biopsy tissue sections is of great importance for the diagnosis of myelodysplastic syndrome. In addition, biopsies are also of interest for the judgment of bone marrow necrosis or adipose marrow.
At present, a special puncture needle is used for taking a small piece of cylindrical bone marrow tissue with the length of about 0.5 cm to 1 cm for pathological examination in the existing bone marrow biopsy operation. The operation method is similar to bone marrow puncture, but the extracted material maintains the complete bone marrow tissue structure, and can make up the deficiency of bone marrow puncture. The existing bone marrow biopsy is commonly used in a circular cutting needle biopsy method, a notch is formed in the top end of a needle cutting sleeve needle, namely a needle spiral side knife is arranged on a needle core, after bone penetration is achieved, the needle core is pulled out, an extender is arranged on the needle core, the needle core is inserted, the needle core is rotated downwards in the clockwise direction, and after the needle core is rotated to 1-1.5 cm, the needle core is rotated upwards in the clockwise direction, and then the puncture needle is pulled out. The core is withdrawn and the peripheral probe is advanced from the end of the trocar, carefully pushing the specimen onto the clean slide. In the prior art, the bone marrow biopsy needle is usually manufactured by firstly carrying a solid needle core with a needle cutting trocar through harder bones, then pulling out the solid needle core, inserting a longer hollow needle core, rotating downwards for 1-1.5 cm, and pulling out the hollow needle core, and further pushing out a sample by adopting a thinner probe. Or the hollow core needle is sleeved in the needle cutting sleeve needle and enters the bone along with the needle cutting sleeve needle, the needle core is pulled out, the extender is arranged, the needle core is inserted, the needle core is rotated downwards in the clockwise direction, and after the needle core is rotated into the position of 1-1.5 cm, the needle core is rotated upwards in the clockwise direction, so that the puncture needle is pulled out. The individual suit components must be pulled out and inserted when in use, and even a plurality of insertion and removal operations occur, the individual suit components are easy to be polluted by the environment, and the risk of wound infection exists. In addition, the operation is troublesome, all parts need to be stored in a sterile environment for use after the sterilization treatment, and in practice, all the needle cores are completely exposed and in the environment in the use process, so that absolute sterile operation cannot be realized, and the factors of introducing external bacteria also exist.
Disclosure of Invention
Aiming at the problems of the existing bone marrow biopsy needle, the condition that external germs are easy to be introduced in the using process and the problem of troublesome operation process, the invention provides the bone marrow biopsy needle set capable of completing sampling without pulling out the needle core from the trocar, thereby preventing wound infection and improving the operation simplicity.
The technical scheme adopted by the invention for solving the technical problems is to provide a bone marrow biopsy needle set, which comprises a trocar, a circular cutting needle tube and a core rod. Wherein, the sleeve needle is tubular, the front end is an inclined plane, the rear end is fixed with a sleeve needle seat, and the symmetrical positions of the two side edges of the sleeve needle seat are provided with sleeve needle seat side clamping grooves. The front end of the circular cutting needle tube is provided with a circular cutting tool bit, the rear side of the circular cutting needle tube is fixedly provided with a needle tube seat, two sides of the needle tube seat are respectively fixedly provided with needle tube seat side clamping grooves through connecting rods, and meanwhile, the middle part of the rear side of the needle tube seat is provided with a needle tube seat middle clamping groove. The rear end of the core rod is fixedly provided with a core rod handle, the middle part of the core rod handle is provided with a clamping plate which is clamped in a clamping groove in the needle tube seat in a matching way, two sides of the core rod handle are bent forwards to form a U-shaped structure, two ends of the U-shaped structure are respectively provided with a plug, and the rear end of each plug is provided with a baffle; plugs positioned at two sides of the core bar handle can be matched and inserted into the side clamping grooves of the needle holder and the side clamping grooves of the needle tube holder; the annular cutting needle tube is sleeved in the sleeve needle, and the core rod is sleeved in the annular cutting needle tube; the distance between the front side wall of the needle tube seat and the front end of the circular cutting needle tube is larger than the total length of the trocar assembly, and the length difference is d.
The clamping groove in the needle tube seat is perpendicular to the connecting rod of the needle tube seat, so that the core rod handle and the connecting rod form a cross structure so as to facilitate holding and rotating, and the rotating angle range is convenient to control.
The circular cutting tool bit is a tool bit with circular saw teeth formed by saw teeth along the circumferential surface at the end part of the circular cutting needle tube, and the screwing side of each saw tooth structure comprises a honeysuckle part.
The invention has the beneficial effects that: the invention adopts the trocar assembly, the circular cutting needle tube assembly and the core bar assembly, and the three assemblies are always positioned in the wound, and the operation process of inserting new parts after extracting corresponding parts can not occur during use, thereby avoiding the situation that the parts in the external environment are inserted into the marrow cavity of the human body again, namely, the factors of introducing external bacteria are not existed, achieving the purpose of thoroughly preventing wound infection and further improving the medical safety. The invention has reasonable structural design, simple and convenient operation and can improve the sampling operation efficiency.
Drawings
Fig. 1 is a schematic view of the front clamping state (the core bar handle is fixed with the side clamping groove of the sleeve needle seat) of the invention.
Fig. 2 is a schematic diagram showing a state of moderate drawing based on the state of fig. 1.
FIG. 3 is a schematic view showing the state of the back clamping (the core bar handle is fixed with the side clamping groove of the needle tube seat) of the invention.
Fig. 4 is a schematic view of the structure of the core and its handle.
Fig. 5 is a schematic diagram of the assembly of the components of the present invention.
Fig. 6 is a schematic diagram of the B-direction structure in fig. 5.
Fig. 7 is an enlarged schematic view of the portion a in fig. 1.
Fig. 8 is a schematic cross-sectional view of the cutting head of fig. 7.
FIG. 9 is a graph of the size versus the various components in the product of the present invention.
Detailed Description
A bone marrow biopsy needle set as shown in figure 1 comprises a trocar assembly, a circular cutting needle tube assembly and a core bar assembly which are sequentially sleeved together and matched with each other for use. The product can be used for puncture site after bone marrow biopsy preparation and anesthesia operation by adopting conventional disinfection treatment before use.
The mounting engagement between the components is illustrated with reference to fig. 1-8 and described below.
As shown in fig. 5, the trocar assembly comprises a trocar 1 and a trocar stand 2, wherein the trocar 1 is tubular, the front end of the trocar 1 is inclined so as to be inserted into muscle tissue and penetrate into bone, and the rear end of the trocar 1 is fixedly provided with the trocar stand 2. The symmetrical positions of the two side edges of the sleeve needle seat 2 are provided with sleeve needle seat side clamping grooves 3.
As shown in fig. 5, the circular cutting needle tube assembly comprises a circular cutting needle tube 4 and a needle tube seat 5, wherein the front end of the circular cutting needle tube 4 is provided with a circular cutting knife head 10, and the circular cutting knife head 10 is a circular saw-toothed knife head formed by saw-tooth along the circumferential surface at the end part of the circular cutting needle tube 4, as shown in fig. 7 and 8. The back side of the circular cutting needle tube 4 is fixed with a needle tube seat 5, two sides of the needle tube seat 5 are respectively fixed with a needle tube seat edge clamping groove 7 through a connecting rod 6, and meanwhile, the middle part of the back side of the needle tube seat 5 is provided with a needle tube seat middle clamping groove 8, as shown in fig. 6, and a needle tube cavity 9 is further arranged in the needle tube seat 5.
As shown in fig. 5, the mandrel assembly includes a solid mandrel 11 and a mandrel handle 12, wherein the mandrel handle 12 has a U-shaped configuration. As can be seen from the figure, the two sides of the core bar handle 12 are bent forward to form a U-shaped structure, and plugs 13 are respectively arranged at two ends of the U-shaped structure, and a baffle 14 is arranged at the rear end of each plug 13. A core bar handle 12 is fixed at the rear end of the core bar 11, a clamping plate 15 is arranged in the middle of the core bar handle 12, and the clamping plate 15 is matched and clamped in a clamping groove 8 in the needle tube seat.
The plugs 13 positioned at two sides of the core bar handle 12 can be matched and inserted into the side clamping grooves 3 of the needle holder and can be pushed and pulled out, as shown in fig. 2-4, the circular cutting needle tube 4 is sleeved in the sleeve needle 1, and the core bar 11 is sleeved in the circular cutting needle tube 4. The plugs 13 on the two sides of the core bar handle 12 can be matched and inserted into the needle tube seat side clamping grooves 7, and can be pushed and pulled out. In order to achieve stability of the assembly, it is conceivable to provide a cushion layer, or a friction surface or a weakly magnetic material layer in the respective clamping groove, in order to ensure a smooth mounting and positioning.
As shown in FIG. 8, the length of the trocar assembly is a, the total length of the annular cutting needle tube assembly is b, the total length of the core rod assembly is c, a < b.ltoreq.c is satisfied, the distance between the front side wall of the needle tube seat 5 and the front end of the annular cutting needle tube 4 is larger than the total length of the trocar assembly, and the length difference is d.
After the trocar assembly, the annular cutting needle tube assembly and the core bar assembly are utilized, as shown in fig. 1 and 8, the front end of the annular cutting needle tube 4 can slightly extend or partially extend out of the front end of the trocar 1, the front end of the solid core bar 11 is also an inclined plane, and the annular cutting needle tube 4 and the trocar 1 slightly extend out, so that the combined structure of the three layers of the trocars can achieve the function of internal and external support, and the trocars 1 can be conveniently screwed into a bone layer.
When in use, the trocar assembly, the circular cutting needle tube assembly and the core bar assembly are sequentially sleeved in a mode shown in figure 1, and at the moment, two sides of the core bar handle 12 are clamped in the cannula holder side clamping grooves 3 at two sides of the cannula holder 2 to form an integrated structure. Because the clamping groove 8 in the needle tube seat is vertical to the connecting rod 6 of the needle tube seat 5 (or inclined to other angles, such as other inclined angles ranging from 30 degrees to 90 degrees), the connecting rod 6 of the needle tube seat 5 and the sleeve seat 2 are also vertical to form a cross-shaped structure (or inclined structure, so that grabbing operation is convenient), and at the moment, the core rod handle 12 is fixedly connected with the sleeve seat 2 and the clamping groove 8 in the needle tube seat, so that the three components are in an integral structure.
The front end of the needle head is aligned with the puncture part (better than the front upper iliac spine and the rear upper iliac spine), the core bar handle 12 is held by hands and is pressed and rotated with proper force, the core bar handle 12 can push the sleeve needle seat 2 by the baffle table 14 to push the sleeve needle 1 forwards, so that the sleeve needle 1 enters the marrow cavity, and the sleeve needle 1 is enabled to enter the marrow cavity after the resistance is reduced. The core bar assembly is then pulled outwardly (the ring cut needle tube assembly may not be pulled or may be pulled a short distance as appropriate) at which time the core bar handle 12 is disengaged from the hub side catch 3. Then, after the circular cutting needle tube component is rotated for 90 degrees (or other degrees), two sides of the core bar handle 12 are clamped in the needle tube seat side clamping grooves 7, so that the circular cutting needle tube component and the core bar component are fixed into a whole.
As shown in FIG. 9, the length difference d between the front side wall of the needle tube seat 5 and the front end of the circular cutting needle tube 4 is 1-1.5 cm, so that the core rod handle 12 is pushed to rotate downwards in the clockwise direction and can be rotated into 1-1.5 cm, the circular cutting knife head 10 at the front end of the circular cutting needle tube 4 can cut bone marrow into columnar bone marrow segments 16 (the length of the bone marrow segments 16 is less than or equal to d), and the bone marrow segments 16 are positioned at the front section in the circular cutting needle tube 4. The mandrel handle 12 and the withdrawn circular cutting needle tube 4 are rotated upwards in a clockwise direction, and the needle assembly (three assemblies can be withdrawn simultaneously) is withdrawn to sterilize and wrap the wound, as shown in fig. 2 or 3 or 4. After the extraction, the two sides of the core rod handle 12 are separated from the needle tube seat side clamping grooves 7, and the circular cutting needle tube component and the core rod component are independent from each other but are not required to be extracted. The front end of the circular cutting needle tube 4 is aligned with the middle part of a clean slide, then a core bar component is slightly pushed forward, a bone marrow sample in the circular cutting needle tube 4 is pushed onto the clean slide by utilizing a core bar 11, and then 10% formalin is used for fixation and inspection, and bone marrow liquid on the slide is used for smear inspection.
Therefore, in the operation process, the trocar assembly, the circular cutting needle tube assembly and the core bar assembly are always positioned in the wound, reinsertion operation after extraction does not occur, and parts in the external environment are prevented from reinserting into the marrow cavity of the human body, so that the factors of introducing external bacteria do not exist, the purpose of preventing wound infection is achieved, and meanwhile, the operation simplicity is improved.
Claims (1)
1. The bone marrow biopsy needle set comprises a trocar (1), a circular cutting needle tube (4) and a core rod (11), and is characterized in that: the trocar (1) is tubular, the front end of the trocar is an inclined plane, the rear end of the trocar is fixedly provided with a trocar seat (2), and side clamping grooves (3) of the trocar seat are symmetrically arranged at the two side edges of the trocar seat (2); the front end of the circular cutting needle tube (4) is provided with a circular cutting tool bit (10), the rear side of the circular cutting needle tube is fixedly provided with a needle tube seat (5), two sides of the needle tube seat (5) are respectively fixedly provided with a needle tube seat side clamping groove (7) through a connecting rod (6), and the middle part of the rear side of the needle tube seat (5) is provided with a needle tube seat middle clamping groove (8); the rear end of the core bar (11) is fixedly provided with a core bar handle (12), the middle part of the core bar handle (12) is provided with a clamping plate (15), the clamping plate (15) is matched and clamped in a clamping groove (8) in the needle tube seat, two sides of the core bar handle (12) are bent forwards to form a U-shaped structure, two ends of the U-shaped structure are respectively provided with a plug (13), and the rear end of each plug (13) is provided with a baffle (14); plugs (13) positioned at two sides of the core bar handle (12) can be matched and inserted into the sleeve seat side clamping groove (3) and the needle seat side clamping groove (7); the circular cutting needle tube (4) is sleeved in the trocar (1), and the core rod (11) is sleeved in the circular cutting needle tube (4); the distance between the front side wall of the needle tube seat (5) and the front end of the circular cutting needle tube (4) is larger than the total length of the trocar assembly, and the length difference is d; when the needle tube is used, the sleeve needle assembly, the circular cutting needle tube assembly and the core rod assembly are sequentially sleeved, two sides of the core rod handle (12) are clamped in sleeve needle seat side clamping grooves (3) on two sides of the sleeve needle seat (2) to form an integrated structure, and the clamping grooves (8) in the needle tube seat are perpendicular to the connecting rods (6) of the needle tube seat (5), so that the sleeve needle seat (2) and the connecting rods (6) of the needle tube seat (5) are also perpendicular to form a cross structure, and at the moment, the core rod handle (12) is fixedly connected with the sleeve needle seat (2) and fixedly connected with the clamping grooves (8) in the needle tube seat, so that the three assemblies are of an integrated structure; the front end of a needle head is aligned with a puncture part, a core rod handle (12) is held by a hand and is pressed and rotated with proper force, the core rod handle (12) pushes a sleeve needle seat (2) to push a sleeve needle (1) forwards by utilizing a baffle table (14), so that the sleeve needle (1) enters a marrow cavity, the sleeve needle enters the marrow cavity when the resistance is reduced, then a core rod component is pulled out outwards, at the moment, the core rod handle (12) is separated from a sleeve needle seat side clamping groove (3), after the circular cutting needle tube component is rotated for 90 degrees, two sides of the core rod handle (12) are clamped in needle tube seat side clamping grooves (7), the circular cutting needle tube component and the core rod component are fixed into a whole, the length difference d between the front side wall of a needle tube seat (5) and the front end of a circular cutting needle tube (4) is 1-1.5 cm, so that the sleeve needle handle (12) is pushed to rotate downwards in a clockwise direction, a circular cutting needle head (10) at the front end of the circular cutting needle tube (4) can rotate into a columnar bone marrow segment (16) by rotating the bone marrow, and the circular cutting needle segment (16) is positioned in the front of the circular cutting needle tube (4); and then the core bar handle (12) is rotated upwards in the clockwise direction, the circular cutting needle tube (4) is pulled out, the trocar assembly is pulled out, the wound is disinfected and wrapped, after the wound is pulled out, the two sides of the core bar handle (12) are separated from the needle tube base side clamping grooves (7), and at the moment, the circular cutting needle tube assembly and the core bar assembly are independent of each other but are not pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178779.0A CN109106405B (en) | 2018-10-10 | 2018-10-10 | Bone marrow biopsy needle set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178779.0A CN109106405B (en) | 2018-10-10 | 2018-10-10 | Bone marrow biopsy needle set |
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| CN109106405A CN109106405A (en) | 2019-01-01 |
| CN109106405B true CN109106405B (en) | 2023-12-22 |
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| CN201811178779.0A Active CN109106405B (en) | 2018-10-10 | 2018-10-10 | Bone marrow biopsy needle set |
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| CN (1) | CN109106405B (en) |
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| US8882681B2 (en) * | 2011-06-29 | 2014-11-11 | Cook Medical Technologies Llc | Through-cradle soft tissue biopsy device |
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| US9603586B2 (en) * | 2002-07-03 | 2017-03-28 | Encapsule Medical, Llc | Methods and devices for cutting and collecting soft tissue |
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| CN105232119A (en) * | 2015-10-19 | 2016-01-13 | 王彦 | Bone marrow biopsy puncture needle for medical use |
| CN209059281U (en) * | 2018-10-10 | 2019-07-05 | 姚金晓 | Myeloid biopsy needle suit |
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