CN111150431A - Multifunctional marrow sampling needle - Google Patents
Multifunctional marrow sampling needle Download PDFInfo
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- CN111150431A CN111150431A CN202010155653.2A CN202010155653A CN111150431A CN 111150431 A CN111150431 A CN 111150431A CN 202010155653 A CN202010155653 A CN 202010155653A CN 111150431 A CN111150431 A CN 111150431A
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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
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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
- A61B10/0266—Pointed or sharp biopsy instruments means for severing sample
- A61B10/0275—Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
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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
- A61B2010/0258—Marrow samples
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Abstract
The invention relates to the technical field of medical instruments, in particular to a multifunctional marrow sampling needle. The bone marrow puncture needle comprises a puncture needle, a bone marrow collector, a fixed handle and a locking mechanism, wherein the puncture needle is arranged at one end of the bone marrow collector and is in sealed clamping connection with the bone marrow collector or is in threaded connection with the bone marrow collector; the bone marrow collector is cylindrical; the fixed handle is arranged at one end of the bone marrow collector far away from the puncture needle, the fixed handle is connected with the bone marrow collector through a reinforcing rod in a clamping or threaded connection mode; the locking mechanism is arranged in the bone marrow collector and is detachably connected with the fixed handle. The invention can realize one-time puncture by designing a plurality of sampling ports, simultaneously adopts the effects of bone marrow fluid and bone marrow, is accompanied by a sealing device, and can ensure that the bone marrow can not fall off in the process of taking out the puncture needle.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a multifunctional marrow sampling needle.
Background
Bone marrow biopsy, which is to take a small bone marrow tissue with the size of about 0.5-1 cm by a special puncture needle for pathological examination; wherein the bone marrow fluid and bone marrow are collected separately. The bone puncture biopsy can not only know the components of bone marrow cells and the distribution condition of original cells, but also observe the cell morphology, is convenient for making pathological diagnosis, and has important significance for diagnosing aplastic anemia and myelodysplasia. In addition, the kit also has diagnostic significance for bone marrow necrosis and bone marrow adiposis.
When in-vivo sampling is clinically carried out, a marrow biopsy needle and a bone marrow biopsy needle are generally used respectively, sampling is carried out respectively during in-vivo sampling, a patient suffers from the pain of two times of puncture, medical staff also needs to operate respectively, and the sampling efficiency of bone marrow biopsy is greatly limited.
Disclosure of Invention
The invention aims to solve the technical problems that a marrow biopsy needle and a bone marrow biopsy needle are generally used respectively when in-vivo sampling is carried out clinically, sampling is carried out respectively when in-vivo sampling is carried out, a patient suffers from the pain of two times of puncture, medical staff also needs to operate respectively, and the sampling efficiency of bone marrow biopsy is greatly limited.
In order to solve the problems, the invention provides a multifunctional marrow sampling needle, which can realize one-time puncture by designing a plurality of sampling ports, simultaneously has the effects of marrow fluid and marrow substance, is accompanied by a sealing device, and can ensure that the problem that a sample falls off in the process of taking out the puncture needle is solved.
In order to achieve the purpose, the invention provides the following technical scheme: a multifunctional marrow sampling needle comprises a puncture needle, a marrow collector, a fixed handle and a locking mechanism, wherein the puncture needle is arranged at one end of the marrow collector and is in sealed clamping connection with the marrow collector or is in threaded connection with the marrow collector; the bone marrow collector is cylindrical; the fixed handle is arranged at one end of the bone marrow collector far away from the puncture needle, the fixed handle is connected with the bone marrow collector through a reinforcing rod in a clamping or threaded connection mode; the locking mechanism is arranged in the bone marrow collector and is detachably connected with the fixed handle;
the bone marrow collector comprises a cylinder body and a bone marrow collecting opening, wherein the cylinder body is cylindrical; the bone marrow collecting port adopts a plurality of (at least 2) bone marrow collecting ports, which are all arranged on one side of the cylinder body or alternatively arranged on different sides, the bone marrow collecting port is rectangular, and the side wall of the opening of the bone marrow collecting port is provided with a knife edge;
the fixed handle comprises a fixed cap, a handle and a through hole, the fixed cap is cylindrical, the end part of the fixed cap is connected with the reinforcing rod, and the fixed cap is in interference clamping connection or threaded connection; the handle is welded at the other end of the fixing cap; the through hole is formed along the axis of the fixing cap, penetrates through the handle and serves as a guide groove of the driving rod and a connecting hole of the driving rod and the pull handle;
the locking mechanism comprises bone marrow closed cylinders, piston discs, a driving rod, a spring and a pull handle, wherein each bone marrow closed cylinder is fixedly connected (such as welded) or detachably connected with one piston disc, at least 2 bone marrow closed cylinders are adopted, and the space and the number of the bone marrow closed cylinders are matched with corresponding bone marrow collecting ports; the periphery of the driving rod is provided with external threads, one end of the driving rod penetrates through the through hole to be movably connected or welded with the pull handle, and the other end of the driving rod penetrates through the piston disc; the piston discs are connected through a driving rod, wherein one side or two sides of each piston disc are fixed with the driving rod through nuts or internal threads; the piston disc at the rightmost end of the marrow closed cylinder is connected with the pull handle through a driving rod, and the axis of the driving rod is superposed with the axis of the piston disc; the spring is arranged between the piston disc and the fixed handle, one end of the spring is connected with the piston disc at the end part, the other end of the spring is connected with the fixed cap and is sleeved on the driving rod, and when the spring is in a natural state or a micro-compression state, the locking mechanism is in a locking state (namely, the bone marrow collecting port is closed); the pull handle is sleeved in the handle.
When the locking mechanism is in a locking state, the bone marrow sealing cylinder is positioned right below the bone marrow collecting port and is attached to the inner wall of the cylinder body; the piston disc is consistent with the inner diameter of the cylinder body and can slide; the number and the interval of the bone marrow collecting ports are consistent with the number and the interval of the bone marrow closed cylinders and the bone marrow closed cylinders; the opening of the marrow closed cylinder is provided with a scraping edge.
Furthermore, the puncture needle is in a cone shape, and the inside of the puncture needle is solid; an internal thread is arranged at one end of the puncture needle, and the puncture needle is connected with the first external thread in a matching way through the internal thread.
Further, one end of the cylinder body is provided with a first external thread.
Furthermore, one end of the fixing cap is provided with a second external thread.
Furthermore, the puncture needle, the bone marrow collector, the fixed handle and the locking mechanism are all made of medical stainless steel materials.
Furthermore, the number of the bone marrow collecting openings is 3, and scale marks are arranged outside the cylinder body.
Furthermore, the driving rod adopts a multi-section structure, and all sections are connected in an inserting mode or in a threaded mode.
Furthermore, the inner wall of the through hole is provided with internal threads which are matched with the external threads at the end part of the driving rod.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the fixing handle is arranged, so that the bone puncture and the holding of the bone marrow are facilitated, and the use hand feeling of a doctor is improved.
2. According to the invention, by arranging the bone marrow collector and the locking mechanism, the plurality of bone marrow collecting ports are arranged above the cylinder body, and the plurality of bone marrow closed cylinders and the piston disc are arranged on the locking mechanism, when the bone marrow extractor is used, one-time puncture can be realized, and bone marrow liquid and bone marrow can be sampled simultaneously, so that the bone marrow extraction efficiency is effectively improved, and the pain of multiple punctures of a patient is avoided.
3. According to the invention, by arranging the locking mechanism, when taking bone marrow, the fixed handle is held by hand to pull the pull handle to move to one side, the piston disc drives the bone marrow sealing cylinder to move to the right under the drive of the drive rod, the spring is compressed, the bone marrow sealing cylinder leaves the bone marrow collecting port, the bone marrow falls into the cylinder body through the bone marrow collecting port, after the pull handle is loosened, the piston disc drives the bone marrow sealing cylinder to move to the left under the elastic force of the spring, and the bone marrow collecting port is sealed by the bone marrow sealing cylinder, so that the bone marrow and bone marrow liquid are effectively prevented from falling.
4. According to the invention, by arranging the puncture needle, the conical puncture needle is convenient to enter during bone puncture, the puncture needle and the bone marrow collector are arranged in a split type, and the puncture needle is unscrewed, so that the bone marrow is convenient to take out.
5. According to the invention, the bone marrow collector is arranged, and the bone marrow collector, the puncture needle and the fixed handle are designed in a split type, so that the bone marrow collector is convenient to disassemble, and the inside of the bone marrow collector is convenient to disinfect and clean.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of a lancet configuration of the present invention;
FIG. 3 is a schematic diagram of a bone marrow harvester according to the present invention;
FIG. 4 is a cross-sectional view of a bone marrow collection port of the present invention;
FIG. 5 is a schematic view of the fixed handle of the present invention;
FIG. 6 is a schematic structural view of the locking mechanism of the present invention;
fig. 7 is a longitudinal sectional view of the bone marrow sealing cylinder of the present invention.
In the figure: 1. puncturing needle; 2. a bone marrow collector; 21. a barrel; 22. a bone marrow collection port; 221. a blade; 23. a first external thread; 3. fixing a handle; 31. a fixing cap; 32. a second external thread; 33. a handle; 34. a through hole; 4. a locking mechanism; 41. a marrow closed cylinder; 411. a scraping edge; 42. a piston disc; 43. a drive rod; 44. a spring; 45. pulling a handle; 5. and a reinforcing rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a multifunctional marrow sampling needle is shown in figure 1, and comprises a puncture needle 1, a marrow collector 2, a fixed handle 3 and a locking mechanism 4, wherein the puncture needle 1 is arranged at one end of the marrow collector 2 and is in sealed clamping connection with the marrow collector 2 or in threaded connection with the marrow collector; the bone marrow collector 2 is cylindrical, the cylindrical shape can ensure that the internal piston disc and the bone marrow closed cylinder can stably move, and the bone marrow closed cylinder accurately seals the bone marrow collecting port to achieve the purpose of preventing a sample from falling out; the fixed handle 3 is arranged at one end of the bone marrow collector 2 far away from the puncture needle 1, the fixed handle 3 is connected with the bone marrow collector 2 through a reinforcing rod 5 in a clamping or threaded connection mode; the inner diameter of the reinforcing rod 5 is consistent with that of the bone marrow collector 2, the reinforcing rod and the bone marrow collector are integrally formed or welded, the side wall of the reinforcing rod is solid and is used for enhancing the bending strength of the whole sampling inspection needle and is convenient to disassemble, and in addition, the design of the hand gripping seat ensures that the stress direction of the hand gripping seat is always in the axial direction of the bone marrow collector when the locking mechanism is operated, so that the puncture needle cannot deflect; the locking mechanism 4 is arranged inside the bone marrow collector 2 and is detachably connected with the fixed handle 3.
As shown in fig. 3, the bone marrow harvester 2 comprises a cylinder 21 and a bone marrow collecting port 22, wherein the cylinder 21 is cylindrical; the bone marrow collecting openings 22 are at least 2, are all arranged on one side of the cylinder body 21 or alternatively arranged on different sides, and the distance between the bone marrow collecting openings 22 is set to be 0.5-1 cm and is consistent with the length of the bone marrow collecting openings 22; this mouth 22 is collected to marrow sets up to the rectangle form, as shown in fig. 4, and the axial opening part that the mouth was collected to marrow is equipped with cutting edge 221, is used for scraping during the rotatory barrel and collects bone marrow matter, can cooperate the scale on the barrel in addition, and the location puncture depth realizes that the collection mouth that is close the puncture tip collects bone marrow liquid, and the collection mouth at rear collects bone marrow matter, and the sampling simultaneously of once puncturing has improved the marrow and has extracted efficiency, and has avoided the pain of patient's puncture many times. Through adopting above-mentioned technical scheme, marrow collector 2 all adopts split type design with pjncture needle 1 and fixed handle 3, convenient to detach, conveniently collects the marrow and disinfects and clears up inside marrow collector 2.
As shown in fig. 5, the fixing handle 3 includes a fixing cap 31, a handle 33 and a through hole 34, the fixing cap 31 is cylindrical, and the end of the fixing cap 31 is connected with the reinforcing rod in an interference clamping or threaded manner; the handle 33 is welded at the other end of the fixing cap 31; the through hole 34 is opened along the axis of the fixing cap 31, and the through hole 34 penetrates through the handle 33 to be used as a guide groove of the driving rod and a connecting hole of the driving rod and the pull handle. By adopting the technical scheme, the bone puncture and the holding of the bone marrow are facilitated, and the use hand feeling of a doctor is improved.
As shown in fig. 6, the locking mechanism 4 includes bone marrow closing cylinders 41, piston discs 42, driving rods 43, springs 44 and pull handles 45, each bone marrow closing cylinder 41 is fixedly connected (e.g. welded) or detachably connected with one piston disc 42, at least 1 bone marrow closing cylinder 41 is adopted, the spacing and number of the bone marrow closing cylinders are matched with the corresponding bone marrow collecting ports, and the bone marrow collecting ports at the corresponding positions (towards the side of the needle head) can be closed at one time; the outer periphery of the driving rod 43 is provided with an external thread, and one end of the driving rod passes through the through hole 34 to be movably connected or welded with the pull handle 45, wherein the movable connection is, for example but not limited to, interference clamping; the other end penetrates through the piston disc 42; each piston disc 42 is connected through a driving rod 43, wherein one side or two sides of each piston disc 42 are fixed with the driving rod 43 through nuts or internal threads, so that the position of each piston disc can be conveniently adjusted according to the position of the bone marrow collecting port, and the bone marrow liquid or the bone marrow in the corresponding closed cylinder can be conveniently and respectively taken out; the piston disc 42 at the rightmost end of the marrow closed cylinder 41 is connected with a pull handle 45 through a driving rod 43, and the axis of the driving rod 43 is superposed with that of the piston disc 42; the spring 44 is arranged between the piston disc 42 and the fixed handle 3, one end of the spring is connected with the piston disc at the end part, the other end of the spring is connected with the fixed cap and is sleeved on the driving rod 43, and when the spring is in a natural state or a micro-compression state, the locking mechanism is in a locking state (namely, the bone marrow collecting port is closed); the pull handle 45 is sleeved in the handle 33, the distance from the tail end (shown as the right end) of the pull handle to the inner wall of the handle 33 is the same as the distance between the bone marrow collecting openings 22, the handle is a limiting mechanism at the moment so as to conveniently pull the pull handle backwards (shown as the right end) to the handle position to be blocked by the handle, the moving distance of the whole locking mechanism is the distance between the bone marrow collecting openings 22, and the bone marrow collecting openings can be just exposed for operation at the moment.
By adopting the technical scheme, when bone marrow is taken, firstly puncture is carried out, after reaching a designated position, a forefinger and a middle finger of the fixing handle 3 are held by hands to pull the pull handle 45 to move to one side, the piston disc 42 drives the bone marrow sealing cylinder 41 to move backwards under the driving of the driving rod 43, the spring 44 is propped in the fixing cap and then compressed, the bone marrow sealing cylinder 41 leaves the bone marrow collecting opening 22, at the moment, bone marrow liquid enters the foremost collecting opening under the action of the pumping force of the piston disc, then the sampling needle is rotated back and forth, at the moment, bone marrow is cut by the knife edge and enters the collecting opening at the rear part, then the pull handle 45 is loosened, under the elastic force of the spring 44, the piston disc 42 drives the bone marrow sealing cylinder 41 to move forwards, the bone marrow collecting opening 22 is sealed by the bone marrow sealing cylinder 41, and.
Specifically, as shown in fig. 1 and 6, when the locking mechanism is in a locked state, the bone marrow sealing cylinder 41 is located right below the bone marrow collecting port 22 and attached to the inner wall of the cylinder 21; the piston disc 42 is consistent with the inner diameter of the cylinder body 21 and can slide; the number and the interval of the bone marrow collecting ports 22 and the bone marrow collecting ports 22 are the same as the number and the interval of the bone marrow closed cylinders 41 and the bone marrow closed cylinders 41; the opening of the marrow closed cylinder 41 is provided with a circle of scraping blades 411 for scraping the marrow on the inner wall of the cylinder body to avoid adhesion.
By adopting the technical scheme, the bone marrow sealing cylinder 41 can seal the bone marrow collecting port 22 at the corresponding position, the sealing performance of the bone marrow sealing cylinder 41 is ensured, the bone marrow and bone marrow liquid are prevented from falling off, and the flexibility of the piston disc 42 in the cylinder body 21 is ensured.
Example 2:
as shown in FIG. 2, the puncture needle 1 is provided with a cone shape and a solid inside; an internal thread is arranged at one end of the puncture needle 1, and the puncture needle 1 is connected with the first external thread 23 in a matching way through the internal thread. By adopting the technical scheme, the conical puncture needle 1 is convenient for entering during bone puncture, the puncture needle 1 and the bone marrow collector 2 are arranged in a split type, and the puncture needle 1 is convenient to disassemble, replace and clean after being unscrewed.
As shown in fig. 3, one end of the cylinder 21 is provided with a first external thread 23 for connection with the puncture needle.
As shown in fig. 5, one end of the fixing cap 31 is provided with a second external thread 32 for connection with the reinforcing bar.
The threads are threads in the same direction, namely, the threads are screwed in clockwise rotation or anticlockwise rotation, when the needle is inserted and punctured, the needle inserting direction is consistent with the thread direction, the loosening condition cannot occur, and the needle can be pulled out when the needle is pulled out.
Example 3:
the puncture needle 1, the marrow collector 2, the fixed handle 3 and the locking mechanism 4 are all made of medical stainless steel materials. By adopting the technical scheme, the intramedullary pin does not have any adverse phenomenon after contacting with a human body, is high-temperature resistant and is convenient for cleaning and disinfecting at the later stage.
The rest is the same as in example 1 or 2.
Example 4:
as shown in FIG. 3, the bone marrow collecting ports 22 are provided with 3 equidistant holes, and scale marks are provided on the outer surface of the cylinder 21.
Through adopting above-mentioned technical scheme to carry out the spot check to the marrow of different depths.
The rest is the same as in examples 1 to 3.
Example 5:
the driving rod 43 may be provided with multiple segments (the number of the segments corresponds to the number of the bone marrow closed cylinders), and the segments are connected with each other in an inserting manner or through threads. Therefore, the whole of the bone marrow closed cylinder, the piston disc and the driving rod can be sequentially detached as a unit, and the bone marrow closed cylinder, the piston disc and the driving rod are more convenient and fast.
The rest is the same as in examples 1 to 4.
The working principle is as follows: when taking bone marrow, firstly, puncturing is carried out, after the bone marrow enters a bone of a patient to a designated depth, the fixing handle 3 is held by hand to pull the pull handle 45 to move towards one side, the piston disc 42 drives the bone marrow sealing cylinder 41 to move backwards under the driving of the driving rod 43, the spring 44 is compressed, the bone marrow sealing cylinder 41 leaves the bone marrow collecting port 22, the bone marrow collecting port 22 is opened, at the moment, bone marrow liquid enters the foremost collecting port under the action of the suction force of the piston disc, then the sampling needle is rotated back and forth, bone marrow is cut by the blade and enters the collecting port at the rear, then the pull handle 45 is loosened, the piston disc 42 drives the bone marrow sealing cylinder 41 to move forwards under the elastic force of the spring 44, the bone marrow sealing cylinder 41 seals the bone marrow collecting port 22, and the outflow of the bone marrow and the falling of. After the puncture needle is taken out, the sampling needle is placed upside down (the puncture needle is upward), marrow liquid or marrow falls into a space formed by the corresponding marrow closed cylinder and the piston disc, then the puncture needle 1 is unscrewed, the cylinder body 21 is taken down, and then the leftmost (upper) marrow closed cylinder and the piston disc are sequentially taken down and taken down at the back (or the whole of the marrow closed cylinder, the piston disc and the driving rod are directly and sequentially taken down as a unit, so that the pollution is avoided more quickly); in addition, the bone marrow collector 2, the puncture needle 1 and the fixed handle 3 are designed in a split type, so that the disassembly is convenient, and the disinfection and the cleaning of the interior of the bone marrow collector 2 are also convenient.
Example 6:
the inner wall of the through hole 34 is provided with internal threads, the driving rod is fixedly connected with the pull handle, the through hole is used as a guide groove of the driving rod and a connecting hole of the driving rod and the pull handle, and the position of the pull handle can be fixed or adjusted through the matching of the internal threads and the external threads of the driving rod, so that the driving rod can move and move backwards; the spring only assists.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A multi-functional marrow selective examination needle which characterized in that: the bone marrow puncture needle comprises a puncture needle, a bone marrow collector, a fixed handle and a locking mechanism, wherein the puncture needle is arranged at one end of the bone marrow collector and is in sealed clamping connection with the bone marrow collector or is in threaded connection with the bone marrow collector; the bone marrow collector is cylindrical; the fixed handle is arranged at one end of the bone marrow collector far away from the puncture needle, the fixed handle is connected with the bone marrow collector through a reinforcing rod in a clamping or threaded connection mode; the locking mechanism is arranged in the bone marrow collector and is detachably connected with the fixed handle;
the bone marrow collector comprises a cylinder body and a bone marrow collecting opening, wherein the cylinder body is cylindrical; the bone marrow collecting ports are arranged on one side of the cylinder body or alternatively arranged on different sides, the bone marrow collecting ports are rectangular, and the side wall of the opening of the bone marrow collecting ports is provided with a knife edge;
the fixed handle comprises a fixed cap, a handle and a through hole, the fixed cap is cylindrical, the end part of the fixed cap is connected with the reinforcing rod, and the fixed cap is connected in a clamping or threaded manner; the handle is welded at the other end of the fixing cap; the through hole is formed along the axis of the fixing cap, penetrates through the handle and serves as a guide groove of the driving rod and a connecting hole of the driving rod and the pull handle;
the locking mechanism comprises bone marrow closed cylinders, piston discs, driving rods, springs and pull handles, wherein each bone marrow closed cylinder is fixedly or detachably connected with one piston disc, at least 2 bone marrow closed cylinders are adopted, and the space and the number of the bone marrow closed cylinders are matched with corresponding bone marrow collecting ports; the periphery of the driving rod is provided with external threads, one end of the driving rod penetrates through the through hole to be movably connected or welded with the pull handle, and the other end of the driving rod penetrates through the piston disc; the piston discs are connected through a driving rod, wherein one side or two sides of each piston disc are fixed with the driving rod through nuts or internal threads; the piston disc at the rightmost end of the marrow closed cylinder is connected with the pull handle through a driving rod, and the axis of the driving rod is superposed with the axis of the piston disc; the spring is arranged between the piston disc and the fixed handle, one end of the spring is connected with the piston disc at the end part, the other end of the spring is connected with the fixed cap and is sleeved on the driving rod, and the locking mechanism is in a locking state when the spring is in a natural state or a micro-compression state; the pull handle is sleeved in the handle;
when the locking mechanism is in a locking state, the bone marrow sealing cylinder is positioned right below the bone marrow collecting port and is attached to the inner wall of the cylinder body; the piston disc is consistent with the inner diameter of the cylinder body and can slide; the number and the interval of the bone marrow collecting ports are consistent with the number and the interval of the bone marrow closed cylinders and the bone marrow closed cylinders; the opening of the marrow closed cylinder is provided with a scraping edge.
2. The multi-functional bone marrow sampling needle of claim 1, characterized in that: one end of the cylinder body is provided with a first external thread.
3. The multi-functional bone marrow sampling needle of claim 2, characterized in that: the puncture needle is in a cone shape, and the inside of the puncture needle is solid; an internal thread is arranged at one end of the puncture needle, and the puncture needle is connected with the first external thread in a matching way through the internal thread.
4. The multi-functional bone marrow sampling needle of claim 1, characterized in that: one end of the fixing cap is provided with a second external thread.
5. The multi-functional bone marrow sampling needle of claim 1, characterized in that: the puncture needle, the bone marrow collector, the fixed handle and the locking mechanism are all made of medical stainless steel.
6. The multi-functional bone marrow sampling needle of claim 1, characterized in that: the number of the marrow collecting openings is 3, and scale marks are arranged outside the cylinder body.
7. The multi-functional bone marrow sampling needle of claim 1 or 6, characterized in that: the driving rod adopts a multi-section structure, and all sections are connected in an inserting mode or in a threaded mode.
8. The multi-functional bone marrow sampling needle of claim 1, characterized in that: the inner wall of the through hole is provided with internal threads which are matched with the external threads at the end part of the driving rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155653.2A CN111150431A (en) | 2020-03-09 | 2020-03-09 | Multifunctional marrow sampling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155653.2A CN111150431A (en) | 2020-03-09 | 2020-03-09 | Multifunctional marrow sampling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111150431A true CN111150431A (en) | 2020-05-15 |
Family
ID=70567398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010155653.2A Withdrawn CN111150431A (en) | 2020-03-09 | 2020-03-09 | Multifunctional marrow sampling needle |
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| CN (1) | CN111150431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117530758A (en) * | 2023-11-01 | 2024-02-09 | 中国人民解放军总医院第六医学中心 | Acquisition device for bone marrow transplantation and application method thereof |
-
2020
- 2020-03-09 CN CN202010155653.2A patent/CN111150431A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117530758A (en) * | 2023-11-01 | 2024-02-09 | 中国人民解放军总医院第六医学中心 | Acquisition device for bone marrow transplantation and application method thereof |
| CN117530758B (en) * | 2023-11-01 | 2024-06-04 | 中国人民解放军总医院第六医学中心 | Acquisition device for bone marrow transplantation and application method thereof |
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Application publication date: 20200515 |