CN220695297U - Novel anti-drop bone puncture biopsy needle - Google Patents
Novel anti-drop bone puncture biopsy needle Download PDFInfo
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- CN220695297U CN220695297U CN202321767642.5U CN202321767642U CN220695297U CN 220695297 U CN220695297 U CN 220695297U CN 202321767642 U CN202321767642 U CN 202321767642U CN 220695297 U CN220695297 U CN 220695297U
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 42
- 238000001574 biopsy Methods 0.000 title claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 22
- 238000007470 bone biopsy Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 description 11
- 210000001519 tissue Anatomy 0.000 description 5
- 210000001185 bone marrow Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 208000029513 osteogenic neoplasm Diseases 0.000 description 2
- 208000018084 Bone neoplasm Diseases 0.000 description 1
- 210000003557 bones of lower extremity Anatomy 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003748 differential diagnosis Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014951 hematologic disease Diseases 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002997 osteoclast Anatomy 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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Abstract
The novel anti-drop bone puncture biopsy needle comprises a needle tube, a needle core and a sample pushing probe; the needle tube comprises a double-layer hollow structure with an outer wall and an inner wall, an outer cavity is formed between the outer wall and the inner wall, the hollow structure of the inner wall is an inner cavity, the head end of the needle tube is provided with a handle, a control switch is arranged on the handle, the tail end of the outer cavity is of an arc-shaped structure and is communicated with the inner cavity of the needle tube, at least two blades and a movable ring are arranged in the outer cavity, the movable ring is sleeved on the inner wall, the blades are connected to the movable ring through a connecting rod, and the movable ring is connected with the control switch through a push rod; the needle core movably penetrates through the handle, enters the inner cavity of the needle tube and penetrates out of the tail end of the needle tube, the head end of the needle core is provided with a detachable handle cap, and the handle cap is just buckled on the handle; the sample pushing probe penetrates the handle and enters the inner cavity of the needle tube. The utility model has simple structure and convenient operation, effectively prevents the bone tissue strips from falling off, is more convenient for cutting hard bone tissue roots and meets the practical requirement.
Description
Technical Field
The utility model relates to the technical field of interventional medical instruments, in particular to a novel anti-drop bone puncture biopsy needle.
Background
At present, a bone puncture biopsy needle is a commonly used interventional biopsy tool in medicine, mainly in interventional puncture operation, the bone puncture biopsy needle is guided to pass through skin, muscle and hard bone cortex through imaging equipment such as X-ray, CT, DSA and the like and then reaches diseased bone tissue or marrow cavity, and generally, complete 1.0-2.0cm cylindrical solid bone tissue strips/marrow tissue can be collected for pathological detection, so that the bone puncture biopsy needle has been widely used clinically, and is especially used for diagnosis, differential diagnosis and treatment effect judgment of difficult bone tumors (vertebrae, limb bones and the like) and blood diseases.
Although most of bone biopsy surgical sampling can be completed by the conventional bone biopsy needle in the market at present, the conventional bone biopsy needle is found to have sampling failure particularly for hard osteogenic tumors in the process of drilling an osteoclast cortex into a diseased bone tissue for sampling and withdrawing the needle, so that a bone tissue sample often falls off and is withdrawn together with the biopsy needle, but is interrupted to fall into a bone tissue focus, although a learner proposes a tissue forceps front end structure adopting an elastic clamping piece or adopts an anti-slip structure arranged on the inner wall of a needle tube so as to reduce the probability of bone tissue sampling sliding, for clinical common osteogenic tumor tissue sampling, sampling failure still occurs frequently due to the fact that the hard root of a sampling bone tissue strip is difficult to bite, the biopsy time is prolonged, discomfort of a patient is increased, and meanwhile, the working difficulty of a clinician is also increased. Therefore, the utility model provides a novel bone puncture biopsy needle capable of preventing tissue from falling off.
Disclosure of Invention
The utility model aims to solve the technical problems by providing the bone puncture biopsy needle with a simple structure and convenient operation, and the problems in the background technology are solved by arranging the movable band saw tooth blade structure on the needle tube.
The utility model is realized in the following way: a novel anti-drop bone puncture biopsy needle comprises a needle tube, a needle core and a sample pushing probe; the needle tube comprises a double-layer hollow structure with an outer wall and an inner wall, an outer cavity is formed between the outer wall and the inner wall, the hollow structure of the inner wall is an inner cavity, the tail end of the outer wall protrudes out of the tail end of the inner wall and is of a three-side cutting knife peak structure, the head end of the needle tube is provided with a handle, a control switch is arranged on the handle, the tail end of the outer cavity is of an arc structure and is communicated with the inner cavity of the needle tube, at least two blades and a movable ring are arranged in the outer cavity, the movable ring is sleeved on the inner wall, the blades are arranged at the tail end of the outer cavity, the cutting surface of the movable ring is provided with saw teeth and is connected with the movable ring through a connecting rod, the movable ring is connected with the control switch through a push rod, the tail end of the outer cavity is positioned between the adjacent blades, the control switch is used for controlling the blades to penetrate out of the tail end of the outer cavity into the inner cavity of the needle tube, and the inner cavity of the needle tube can be sealed; the needle core movably penetrates through the handle to enter the inner cavity of the needle tube and penetrate out of the tail end of the needle tube, a detachable handle cap is arranged at the head end of the needle core, and the handle cap is just buckled on the handle; the sample pushing probe penetrates through the handle and enters the inner cavity of the needle tube.
Furthermore, the blade is a steel soft blade, so that the blade can be smoothly bent into the inner cavity of the needle tube, and the hard root of the bone tissue strip can be cut.
Further, the number of the blades is four, and the four blades can just seal the inner cavity of the needle tube when entering the inner cavity of the needle tube.
Furthermore, the outer wall surface of the needle tube is provided with a scale mark, the outer wall is also movably sleeved with a positioning rubber plug, and the positioning rubber plug and the scale mark are used for grasping the length of the needle tube which is sent into a patient body during operation.
The utility model has the advantages that: according to the utility model, the needle tube is designed into a double-layer hollow structure, so that the sampling and control blades can be conveniently positioned in different cavities during operation; the blade, the movable ring and the control switch are arranged in the needle tube, so that the blade can be controlled to enter the inner cavity from the outer cavity by pushing the control switch, the inner cavity is further closed, and the bone tissue strips are prevented from falling off when the needle tube is taken out; by setting the tail end of the outer cavity to be of an arc-shaped structure, the blade is convenient to bend after entering the inner cavity, and the inner cavity is better sealed; the saw teeth are arranged on the cutting surface of the blade, so that the root of the bone tissue is cut more conveniently when sampling is carried out; the baffle plates are arranged at the tail end of the outer cavity and between the adjacent blades and are used for limiting the position of each blade so as to avoid the mutual influence of the movement of the blades; through set up detachable handle cap at the head end of nook closing member, conveniently penetrate the nook closing member in the needle tubing, and can lock after taking out the nook closing member on the handle, avoid the sample in the needle tubing to receive the pollution. The utility model has simple structure and convenient operation, effectively prevents the bone tissue strips from falling off, is more convenient for cutting hard bone tissue roots and meets the practical requirement.
Drawings
The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a novel anti-drop bone puncture biopsy needle according to the present utility model.
FIG. 2 is a schematic elevational view of the distal end of the needle cannula of the present utility model.
FIG. 3 is a schematic top view of the blade of the present utility model in the outer cavity of a needle cannula.
FIG. 4 is a schematic view of the structure of the blade of the present utility model in the closed state of the needle lumen.
FIG. 5 is a schematic diagram of the connection structure of the push rod and the control switch according to the present utility model.
Reference numerals illustrate: needle tube 1, outer wall 11, three-sided cutting knife peak 111, scale mark 112, positioning rubber plug 113, inner wall 12, outer cavity 13, baffle 131, inner cavity 14, handle 15, control switch 16, blade 17, saw tooth 171, connecting rod 172, movable ring 18, push rod 181, needle core 2, handle cap 21, sample pushing probe 3.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5, the novel anti-falling bone puncture biopsy needle of the present utility model comprises a needle tube 1, a needle core 2 and a sample pushing probe 3; the needle tube 1 comprises a double-layer hollow structure of an outer wall 11 and an inner wall 12, an outer cavity 13 is formed between the outer wall 11 and the inner wall 12, the hollow structure of the inner wall 12 is an inner cavity 14, the tail end of the outer wall 11 protrudes out of the tail end of the inner wall 12 and is of a three-face cutting knife peak 111 structure, the head end of the needle tube 1 is provided with a handle 15, the handle 15 is provided with a control switch 16, the tail end of the outer cavity 13 is of an arc structure and is communicated with the inner cavity 14 of the needle tube 1, at least two blades 17 and a movable ring 18 are arranged in the outer cavity 13, preferably, the number of the blades 17 is four, the movable ring 18 is sleeved on the inner wall 12, the blades 17 are arranged at the tail end of the outer cavity 13, the cutting surface of the blades is provided with saw teeth 171, the blades 17 are soft steel blades, and can be bent into the inner cavity 14 of the needle tube 1 smoothly and can cut hard roots of bone tissue strips. Each blade 17 is connected to the movable ring 18 through a connecting rod 172, the movable ring 18 is connected to the control switch 16 through a push rod 181, a partition 131 is disposed between adjacent blades 17 at the end of the outer cavity 13, and is used for limiting the position of each blade 17, so as to avoid the mutual influence of the movement of the blades 17; the blade 17 is controlled to penetrate out of the tail end of the outer cavity 13 and enter the inner cavity 14 of the needle tube 1 by pushing the control switch 16, and the inner cavity 14 of the needle tube 1 can be closed; the surface of the outer wall 11 of the needle tube 1 is provided with a scale mark 112, the outer wall 11 is also movably sleeved with a positioning rubber plug 113, and the positioning rubber plug 113 and the scale mark 112 are used for grasping the length of the needle tube 1 sent into a patient body during operation. The needle core 2 movably penetrates through the handle 15 to enter the inner cavity 14 of the needle tube 1 and penetrate out of the tail end of the needle tube 1, a detachable handle cap 21 is arranged at the head end of the needle core 2, and the handle cap 21 is just buckled on the handle 15; the sample pushing probe 3 is movably inserted through the handle 15 and enters the inner cavity 14 of the needle tube 1.
The operation process comprises the following steps: firstly, the needle core 2 is inserted into the inner cavity 14 of the needle tube 1 through the handle 15, the handle cap 21 is buckled on the handle 15, sharp penetration bone, bone marrow, soft tissue and the like of the needle core 2 are utilized, after being combined into a whole, the needle tube 1 is fixed by rotating clockwise to pierce the skin, the muscle and the hard cortical bone at the position of about 0.5cm, the needle tube 1 is then rotated anticlockwise, the needle core 2 is pulled out by rotating the handle cap 21, the needle core 2 is taken out from the handle cap 21, the handle cap 21 is buckled on the handle 15 again, then the positioning rubber plug 113 is manually moved downwards to be fixed at a certain distance from the body surface, the needle tube 1 is continuously rotated and pushed to enable the positioning rubber plug 113 to reach the body surface, the tail end of the needle tube 1 enters into the diseased bone tissue or the marrow cavity by utilizing the three-side cutting peak 111, at the moment, a part of bone tissue enters the inner cavity 14 of the needle tube 1 to obtain an effective depth, pushing the control switch 16, the control switch 16 pushes the movable ring 18 to move downwards through the push rod 181, the movable ring 18 moves to push the blade 17 to penetrate out of the tail end of the outer cavity 13, the blade 17 bends into the inner cavity 14 of the needle tube 1 because the tail end of the outer cavity 13 is of an arc structure, when four blades 17 containing saw teeth 171 are pushed out simultaneously, the blade 17 can simultaneously bite and sample bone tissue roots and horizontally rotate the needle tube 1, the blade 17 gradually cuts the bone tissue roots until the roots are completely cut off, and the tissue strips are sealed in the needle tube 1 to prevent bone tissue from falling when the needle tube 1 is pulled out, the needle tube 1 is pulled out at the moment, the blade 17 is recovered, finally, the sample pushing probe 3 is used to extend into the inner cavity 14 of the needle tube 1 and push out the complete bone tissue strips to complete an operation, the utility model effectively prevents the bone tissue strips from falling off, ensures the success rate of biopsy, the utility model has simple structure, convenient operation, high effectiveness and meeting the practical requirement.
According to the utility model, the needle tube 1 is designed into a double-layer hollow structure, so that the sampling and control blades can be conveniently positioned in different cavities during operation; by arranging the blade 17, the movable ring 18 and the control switch 15 in the needle tube 1, the blade 17 can be controlled to enter the inner cavity 14 from the outer cavity 13 by pushing the control switch 15, so that the inner cavity 14 is closed, and the bone tissue strips are prevented from falling off when the needle tube 1 is taken out; by setting the tail end of the outer cavity 13 to be of an arc-shaped structure, the blade 17 is convenient to bend after entering the inner cavity 14, and the inner cavity 14 is better sealed; the saw teeth 171 are arranged on the cutting surface of the blade 17, so that the bone tissue root can be cut more conveniently during sampling; by arranging a baffle 131 at the tail end of the outer cavity 13 and between adjacent blades 17, the position of the blades 17 is limited, so that the mutual influence of the movement of the blades 17 is avoided; through setting up detachable handle cap 21 at the head end of nook closing member 2, conveniently penetrate nook closing member 2 in needle tubing 1, and take out handle cap lock behind the nook closing member 2 on handle 15 avoids the sample in the needle tubing 1 to receive the pollution. The utility model has simple structure and convenient operation, effectively prevents the bone tissue strips from falling off, is more convenient for cutting hard bone tissue roots and meets the practical requirement.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.
Claims (4)
1. A novel anti-drop bone puncture biopsy needle, which is characterized in that: comprising
The needle tube comprises a double-layer hollow structure with an outer wall and an inner wall, an outer cavity is formed between the outer wall and the inner wall, the hollow structure of the inner wall is an inner cavity, the tail end of the outer wall protrudes out of the tail end of the inner wall and is of a three-side cutting knife peak structure, the head end of the needle tube is provided with a handle, a control switch is arranged on the handle, the tail end of the outer cavity is of an arc-shaped structure and is communicated with the inner cavity of the needle tube, at least two blades and a movable ring are arranged in the outer cavity, the movable ring is sleeved on the inner wall, the blades are arranged at the tail end of the outer cavity, the cutting surface of the movable ring is provided with saw teeth and is connected with the movable ring through a push rod, the tail end of the outer cavity is provided with a partition board between the adjacent blades, and the blades are controlled to penetrate out of the tail end of the outer cavity into the inner cavity of the needle tube by pushing the control switch, and the inner cavity of the needle tube can be sealed;
the needle core penetrates through the handle movably to enter the inner cavity of the needle tube and penetrates out of the tail end of the needle tube, a detachable handle cap is arranged at the head end of the needle core, and the handle cap is just buckled on the handle; and
And the sample pushing probe penetrates through the handle and enters the inner cavity of the needle tube.
2. The novel anti-drop bone biopsy needle of claim 1, wherein: the blade is a steel soft blade.
3. The novel anti-drop bone biopsy needle of claim 1, wherein: the number of the blades is four, and the four blades can just seal the inner cavity of the needle tube when entering the inner cavity of the needle tube.
4. The novel anti-drop bone biopsy needle of claim 1, wherein: the outer wall surface of the needle tube is provided with scale marks, and the outer wall is also movably sleeved with a positioning rubber plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321767642.5U CN220695297U (en) | 2023-07-06 | 2023-07-06 | Novel anti-drop bone puncture biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321767642.5U CN220695297U (en) | 2023-07-06 | 2023-07-06 | Novel anti-drop bone puncture biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220695297U true CN220695297U (en) | 2024-04-02 |
Family
ID=90444138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321767642.5U Active CN220695297U (en) | 2023-07-06 | 2023-07-06 | Novel anti-drop bone puncture biopsy needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220695297U (en) |
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2023
- 2023-07-06 CN CN202321767642.5U patent/CN220695297U/en active Active
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