CN212816351U - Biopsy needle for collecting tough tissue sample - Google Patents
Biopsy needle for collecting tough tissue sample Download PDFInfo
- Publication number
- CN212816351U CN212816351U CN202020825135.2U CN202020825135U CN212816351U CN 212816351 U CN212816351 U CN 212816351U CN 202020825135 U CN202020825135 U CN 202020825135U CN 212816351 U CN212816351 U CN 212816351U
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- China
- Prior art keywords
- needle
- connecting groove
- matched
- puncture
- cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000001574 biopsy Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 2
- 238000003306 harvesting Methods 0.000 claims 3
- 210000001519 tissue Anatomy 0.000 description 39
- 208000018084 Bone neoplasm Diseases 0.000 description 8
- 238000005070 sampling Methods 0.000 description 7
- 206010005949 Bone cancer Diseases 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000013188 needle biopsy Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
- 231100000732 tissue residue Toxicity 0.000 description 1
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Abstract
The utility model discloses a biopsy needle for collecting tough tissue samples, which comprises a puncture mechanism and a third handle detachably connected with the puncture mechanism; the puncture mechanism comprises a connecting groove, a puncture needle with a through hole in the pipe wall and a cutting part matched with the through hole; the puncture needle is connected with the connecting groove; the cutting part comprises a tail end arranged in the connecting groove and a cutting end arranged in the through hole; a third connecting column which can be matched with the connecting groove is arranged on the third handle; when the third connecting column is matched with the connecting groove, the tail end of the cutting part can be pressed down, and the cutting end is pressed out of the through hole to cut tissues. Has the advantages that: the puncture needle is connected with the connecting groove; a through hole is formed in the wall of the puncture needle, the cutting end of the cutting part is arranged in the through hole, and the tail end of the cutting part is arranged in the connecting groove; connecting the third handle with the connecting groove, pressing the tail end of the third connecting column, pressing the cutting end out of the through hole, and cutting the tissue; the puncture needle is rotated, and the cutting end rotates along with the puncture needle, so that the tissue can be cut off, and the problems that the tissue is tough and difficult to separate and the empty tube is frequently taken back are solved.
Description
Technical Field
The utility model relates to a tissue sample gathers the field, specifically is a biopsy needle for gathering tough and tensile tissue sample.
Background
Previous needle biopsies of tough tissue, such as bone tumor tissue, have been operated primarily with existing biopsy needles. The existing biopsy needle is inserted into tough bone tumor through a hollow needle tube, after a tissue strip is dug, the tail end of the needle tube is blocked and even is drawn out after being sucked by an injector, although the tail end is closed, negative pressure is generated when the needle tube is drawn out, however, the following problems often occur due to the tough and hard tissue to cut:
a. when the needle tube is pulled out, the tissue is still connected with the puncture part, and only the empty needle tube is pulled out;
b. the suction force is difficult to control by using the syringe for suction, and the tissues are easy to damage or even injure other tissues at the needle tip;
c. the tissue can not be taken out every time, which causes multiple times of puncture, increases the pain of patients and increases the incidence rate of complications such as infection bleeding and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that two tissue samples need to be punctured twice in the prior art, the utility model provides a biopsy needle for gathering tough and tensile tissue sample, specific content is as follows:
a biopsy needle for collecting a tough tissue sample comprising a piercing mechanism, a third handle removably attached to the piercing mechanism; the puncture mechanism comprises a connecting groove, a puncture needle with a through hole in the pipe wall and a cutting part matched with the through hole; the puncture needle is connected with the connecting groove; the cutting part comprises a tail end arranged in the connecting groove and a cutting end arranged in the through hole; a third connecting column which can be matched with the connecting groove is arranged on the third handle; when the third connecting column is matched with the connecting groove, the tail end of the cutting part can be pressed down, and the cutting end is pressed out of the through hole to cut tissues.
Furthermore, an elastic mechanism which can be matched with the tail end is arranged in the connecting groove; when the third connecting column is matched with the connecting groove, the elastic mechanism is compressed; when the third connecting column is disassembled, the elastic mechanism can bounce the tail end and withdraw the cutting end into the through hole.
Further, the connecting device also comprises a first handle detachably connected with the connecting groove; the first handle is provided with a first connecting column which can be matched with the connecting groove and a filling needle which can be in transition fit with the puncture needle; the filling needle is a cylinder with a sharp end; when the first connecting column is matched with the connecting groove, the filling needle can be inserted into the puncture needle.
Further, the connecting device also comprises a second handle detachably connected with the connecting groove; and a second connecting column detachably connected with the connecting groove is arranged on the second handle.
Further, a sealing ring is arranged at the third connecting column; when the third spliced pole with the spread groove cooperatees, the sealing washer can seal the spread groove.
Further, the elastic mechanism comprises a spring; the spring is arranged in the connecting groove and can be matched with the tail end.
Further, a flange which can be matched with the spring is arranged at the tail end of the cutting part.
Further, the connecting groove is matched with the third connecting column through threads.
Further, the device also comprises a top rod; the ejector rod can be matched with the puncture needle to eject the tissues in the puncture needle.
Has the advantages that:
the puncture needle is connected with the connecting groove; a through hole is formed in the wall of the puncture needle, the cutting end of the cutting part is arranged in the through hole, and the tail end of the cutting part is arranged in the connecting groove; connecting the third handle with the connecting groove, pressing the tail end of the third connecting column, pressing the cutting end out of the through hole, and cutting the tissue; the puncture needle is rotated, and the cutting end rotates along with the puncture needle, so that the tissue can be cut off, and the problems that the tissue is tough and hard to separate and the empty tube is frequently taken back are solved;
a spring matched with the tail end is arranged in the cutting groove; when the third connecting column presses down the tail end, the spring stores the force; when the third handle is disassembled, the spring rebounds to jack the tail end, and the cutting end is retracted into the through hole;
a filling needle is arranged on the first handle; the first handle is connected with the puncture mechanism, the puncture needle is inserted into the tissue, the filling needle fills the puncture needle, no tissue residue exists in the puncture needle, and the tissue damage is small; when the puncture needle reaches bone cancer cells, the first grip is disassembled and replaced by the second grip, and the tissue is continuously punctured, and at the moment, the bone cancer tissue is collected in the puncture needle; the second grip is detached, the third grip is replaced, the third connecting column extrudes the cutting end, and the puncture needle is rotated to finish cutting; when the puncture mechanism is pulled away, the sealing ring is matched with the connecting groove, negative pressure is formed in the puncture needle, bone cancer tissues cannot be separated from the puncture needle, and sampling failure is caused; after sampling is completed, the ejector pin can be used to eject the tissue from the puncture needle.
Drawings
FIG. 1 is an assembled view of the third handle and the piercing mechanism;
FIG. 2 is an enlarged view of a portion of FIG. 1 at B;
FIG. 3 is a schematic view of the puncturing mechanism;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic view of a first grip;
FIG. 6 is a schematic view of a second grip;
FIG. 7 is a schematic view of a third grip;
FIG. 8 is a schematic view of the carrier rod;
FIG. 9 is an assembled view of the first handle and the lancing mechanism;
FIG. 10 is an assembled view of the second grip and the lancing mechanism;
FIG. 11 is a schematic diagram of the components of an embodiment.
Wherein:
1. a first handle, 11, a first handle, 12, a first connecting column, 13, a filling needle;
2. a second handle 21, a second handle 22, a second connecting column;
3. a third handle 31, a third handle 32, a third connecting column 33 and a sealing ring;
4. the puncture mechanism, 41. connecting groove, 42. puncture needle, 421. through hole, 43. cutting part, 431. cutting end, 432. tail end, 433. flange, 44. spring;
5. ejector rod, 51, fourth handle, 52, pole portion.
Detailed Description
One of the embodiments of the present invention is as follows:
a biopsy needle for collecting tough tissue samples comprises a first handle 1, a second handle 2, a third handle 3, a puncture mechanism 4 and a mandril 5.
The puncture mechanism 4 includes a connection groove 41, a puncture needle 42, a cutting portion 43, and a spring 44. The connecting groove 41 is a groove structure, and the inner surface is provided with threads. The puncture needle 42 is fixedly connected with the connecting groove 41. The puncture needle 42 is a tubular structure, and a through hole 421 is arranged on the wall of the tube. The cutting portion 43 comprises a cutting end 431 matched with the through hole 421, and a tail end 432 positioned in the connecting groove 41; at the trailing end 432 is provided a flange 433. A spring 44 is disposed within the attachment slot 41 and is engageable with the flange 433. The spring 44 is compressed by depressing the flange 433 at the trailing end 432, and the cutting end 431 is exposed through the through hole 421 and extends into the needle 42 to cut tissue.
The first grip 1 includes a first handle 11, a first connecting column 12 provided on the first handle, and a filling needle 13. The first connecting column 12 is a short column structure, and the outer surface of the first connecting column is provided with threads which can be matched with the connecting groove 41; the filling needle 13 is a solid cylinder structure with a pointed end. When the first coupling post 12 is engaged with the coupling groove 41, the filling needle 13 is over-engaged with the piercing needle 42. The first connecting post 12 is now short so that the flange 433 will not be depressed and the cut end 431 will not extend.
The second grip 2 comprises a second handle 21 and a second connecting column 22 arranged on the second handle 21. The second connecting column 22 is a short cylinder structure, and has a screw thread on its outer surface for cooperating with the connecting groove 41. When the second connecting post 22 is coupled with the connecting groove 41, the flange 433 is not pressed down and the cutting tip 431 does not protrude because the second connecting post 22 is short.
The third grip 3 comprises a third handle 31, a third connecting column 32 arranged on the third handle 31 and a sealing ring 33. The second connecting column 22 is a long column structure, and the outer surface of the second connecting column is provided with threads which can be matched with the connecting groove 41. When the second connecting column 22 is matched with the connecting groove 41, the flange 433 can be pressed down due to the longer length of the second connecting column 22, so that the cutting end 431 extends out to cut tissues; meanwhile, the sealing ring 33 is matched with the connecting groove 41 to realize the sealing function.
The jack 5 includes a fourth handle 51 and a rod portion 52 connected to the fourth handle 51. The shaft 52 is engageable with the needle 42 to eject tissue disposed within the needle 42.
The principle of use of this embodiment is as follows:
in the case of sampling bone cancer cells, for use, the first grip 1 is connected to the puncture mechanism 4, the filling needle 13 is engaged with the puncture needle 42, and the puncture needle 42 is inserted into the bone cancer cells at the position corresponding to the tissue to be sampled. Since the needle 42 is filled with the filling needle 13, the needle 42 is free of any remaining tissue.
The first grip 1 is removed, the second grip 2 is connected to the puncture mechanism 4, and the tissue is continuously punctured to start sampling, at which time bone cancer cell tissue is present in the puncture needle 42.
The second grip 2 is removed and the third grip 3 is connected to the puncture mechanism 4. The third connecting post 32 pushes down on the flange 433 so that the cutting tip 431 extends into the needle 42 to cut tissue. At this time, the third grip 3 is rotated to rotate the puncture needle 42 in the tissue, and the cutting tip 431 rotates to complete the cutting of the sampled tissue. At this time, the puncture mechanism 4 is pulled out of the tissue to act as the seal 33, a sealed space is formed in the puncture needle 42, and a negative pressure is formed when the tissue is pulled out, so that the tissue is not detached. After sampling is completed, the third grip is taken down, the puncture needle 42 is introduced by using the ejector rod 5, and the sampling tissue is ejected out to complete sampling.
Claims (9)
1. A biopsy needle for taking tough tissue samples, comprising a puncture mechanism (4), a third grip (3) detachably connected to the puncture mechanism (4);
the puncture mechanism (4) comprises a connecting groove (41), a puncture needle (42) with a through hole (421) arranged on the tube wall, and a cutting part (43) matched with the through hole (421); the puncture needle (42) is connected with the connecting groove (41); the cutting part (43) comprises a tail end (432) arranged in the connecting groove (41) and a cutting end (431) arranged in the through hole (421);
a third connecting column (32) which can be matched with the connecting groove (41) is arranged on the third handle (3); the third connecting column (32) is matched with the connecting groove (41), the tail end (432) of the cutting part (43) can be pressed downwards, the cutting end (431) is pressed out of the through hole (421), and tissues are cut.
2. Biopsy needle for tough tissue sample collection according to claim 1, wherein a resilient mechanism is arranged in the attachment slot (41) which is engageable with the trailing end (432); when the third connecting column (32) is matched with the connecting groove (41), the elastic mechanism is compressed; when the third connecting column (32) is disassembled, the elastic mechanism can bounce the tail end (432) and withdraw the cutting end (431) into the through hole (421).
3. The biopsy needle for harvesting tough tissue samples according to claim 2, further comprising a first grip (1) detachably connected with the connecting slot (41); the first handle (1) is provided with a first connecting column (12) which can be matched with the connecting groove (41) and a filling needle (13) which can be in transition fit with the puncture needle (42); the filling needle (13) is a cylinder with a sharp end; when the first connecting column (12) is matched with the connecting groove (41), the filling needle (13) can be inserted into the puncture needle (42).
4. A biopsy needle for harvesting tough tissue samples according to claim 3, further comprising a second grip (2) detachably connected with the connecting slot (41); the second handle (2) is provided with a second connecting column (22) detachably connected with the connecting groove (41).
5. Biopsy needle for tough tissue sample collection according to claim 4, wherein a sealing ring (33) is further provided at the third connecting column (32); when the third connecting column (32) is matched with the connecting groove (41), the sealing ring (33) can seal the connecting groove (41).
6. A biopsy needle for harvesting tough tissue samples according to claim 5, characterized in that the elastic mechanism comprises a spring (44); the spring (44) is disposed within the connecting slot (41) and is engageable with the tail end (432).
7. Biopsy needle for tough tissue sample collection according to claim 6, characterized in that at the trailing end (432) of the cutting section (43) a flange (433) is provided which is engageable with the spring (44).
8. Biopsy needle for tough tissue sample collection according to claim 7, wherein the attachment slot (41) is screw-threaded with the third attachment post (32).
9. The biopsy needle for tough tissue sample collection according to claim 7, further comprising a push rod (5); the ejector rod (5) can be matched with the puncture needle (42) to eject the tissue in the puncture needle (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020825135.2U CN212816351U (en) | 2020-05-18 | 2020-05-18 | Biopsy needle for collecting tough tissue sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020825135.2U CN212816351U (en) | 2020-05-18 | 2020-05-18 | Biopsy needle for collecting tough tissue sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212816351U true CN212816351U (en) | 2021-03-30 |
Family
ID=75161159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020825135.2U Expired - Fee Related CN212816351U (en) | 2020-05-18 | 2020-05-18 | Biopsy needle for collecting tough tissue sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212816351U (en) |
-
2020
- 2020-05-18 CN CN202020825135.2U patent/CN212816351U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210330 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |