CN116549028B - Anticoagulation bone marrow collection system - Google Patents
Anticoagulation bone marrow collection system Download PDFInfo
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- CN116549028B CN116549028B CN202310843872.3A CN202310843872A CN116549028B CN 116549028 B CN116549028 B CN 116549028B CN 202310843872 A CN202310843872 A CN 202310843872A CN 116549028 B CN116549028 B CN 116549028B
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- 210000001185 bone marrow Anatomy 0.000 title claims abstract description 188
- 230000010100 anticoagulation Effects 0.000 title abstract description 19
- 239000003146 anticoagulant agent Substances 0.000 claims abstract description 65
- 229940127219 anticoagulant drug Drugs 0.000 claims abstract description 58
- 238000005452 bending Methods 0.000 claims abstract description 47
- 230000000903 blocking effect Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000003306 harvesting Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000002776 aggregation Effects 0.000 abstract description 3
- 238000004220 aggregation Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 description 39
- 239000000243 solution Substances 0.000 description 8
- 238000007689 inspection Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000004523 agglutinating effect Effects 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000009583 bone marrow aspiration Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000012631 diagnostic technique Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 201000005665 thrombophilia Diseases 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
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3472—Trocars; Puncturing needles for bones, e.g. intraosseus injections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3498—Valves therefor, e.g. flapper valves, slide valves
-
- 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
- A61B2010/0208—Biopsy devices with actuators, e.g. with triggered spring mechanisms
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention relates to the technical field of medical equipment, in particular to an anticoagulation bone marrow collecting device, which comprises a collecting pipe, wherein a collecting chamber and a collecting part are arranged on the collecting pipe, the collecting chamber is communicated with the collecting part, the collecting part is used for being matched with an outer sleeve needle, and in the bone marrow collecting process, bone marrow flows into the collecting chamber through the outer sleeve needle and the collecting part in sequence; a first accommodating area for accommodating the anticoagulant is arranged in the collecting chamber; the collecting part is provided with an elastic sheet, the part of the elastic sheet connected with the collecting part is a connecting part, the elastic sheet has elasticity, the elastic sheet has an initial state, the elastic sheet in the initial state is in a bending shape and is used for sealing the collecting part, and the elastic sheet is bent towards one side of the collecting chamber; the collecting tube is provided with a power component, the power component is used for providing suction force, and in the bone marrow collecting process, the suction force enables the elastic sheet to deform, so that the collecting part is changed into a conducting state from a blocking state, and bone marrow flows into the collecting chamber through the outer sleeve needle and the collecting part, thereby preventing the phenomenon of aggregation of the collected bone marrow.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to an anticoagulant bone marrow collection device.
Background
Bone marrow aspiration is a relatively common diagnostic technique used in clinic, mainly for the examination of diseases of the cellular and blood systems.
When bone marrow puncture is performed, a medical staff usually selects a puncture part, a patient selects a lateral position, skin of the puncture part is disinfected, the medical staff can wear sterile gloves, local injection of anesthetic is performed until the anesthesia is fully effective, a bone marrow puncture needle punctures the skin, bone marrow is slowly punctured after contacting bone, finally the bone marrow is extracted and coated on a glass sheet, and then examination under a microscope is performed.
In the process of extracting bone marrow from a patient and coating the extracted bone marrow on a glass sheet, if clinical laboratory staff does not go to a site smear, a clinician has poor sheet-making effect; if clinical laboratory staff goes to clinical smear specially, the film-making effect can be improved, but the hand burden of medical staff can be increased;
further, in order to improve the tabletting effect and reduce the burden of the medical staff, usually, after bone marrow is extracted, the extracted bone marrow is injected into an anticoagulant tube for carrying out a delivery test;
however, in the process of extracting bone marrow from a patient and then injecting the bone marrow into an anticoagulant tube, the bone marrow of some hypercoagulable patients is easily aggregated in the process, so that the bone marrow is not beneficial to the examination and the later diagnosis of diseases, and the working efficiency of medical staff is also slowed down.
Therefore, in view of the above-mentioned drawbacks, there is a need to design an anticoagulant bone marrow harvesting device to prevent the harvested bone marrow from agglutinating.
Disclosure of Invention
The invention aims at: aiming at the condition that bone marrow aggregation easily occurs in the bone marrow collecting process at present, the anticoagulation bone marrow collecting device is provided to prevent the phenomenon of aggregation of the collected bone marrow.
In order to achieve the above object, the present invention provides the following technical solutions:
an anticoagulation bone marrow collection device comprises a collection tube, wherein a collection chamber and a collection part are arranged on the collection tube, the collection chamber is communicated with the collection part, the collection part is used for being matched with an outer sleeve needle, and in the bone marrow collection process, bone marrow flows into the collection chamber through the outer sleeve needle and the collection part in sequence;
a first accommodating area for accommodating an anticoagulant is arranged in the collecting chamber;
the collecting part is provided with an elastic sheet, the part, connected with the collecting part, of the elastic sheet is a connecting part, the elastic sheet has elasticity, the elastic sheet in the initial state is in a bent shape, the elastic sheet is bent towards one side of the collecting chamber, and the elastic sheet in the initial state is used for sealing the collecting part;
And the collecting tube is also provided with a power component, the power component is used for providing suction force, and in the bone marrow collecting process, the suction force is used for deforming the elastic sheet, so that the collecting part is changed from a plugging shape into a conducting shape, and bone marrow flows into the collecting chamber through the outer sleeve needle and the collecting part.
As a preferential technical scheme of the application, the collecting part comprises a fixed part and a movable part, the fixed part is communicated with the collecting pipe, and the movable part is sleeved on the fixed part;
the fixing part comprises a fixing part body and a rotating block, the rotating block is rotatably arranged on the fixing part body, and the elastic piece is fixed on the rotating block;
the movable part is provided with a groove which is matched with and propped against the rotating block;
the movable part is used for propping against the outer sleeve needle, when the movable part is propped against and the propped degree is increased, and the movable part moves relative to the fixed part, the relative position between the rotating block and the groove changes, so that the rotating block rotates relative to the fixed part body, the bending degree of the elastic sheet in an initial state is reduced, and the bending degree of the elastic sheet in the initial state is in direct proportion to the plugging force of the elastic sheet when the elastic sheet plugs the collecting part.
As a preferred technical scheme of the application, the movable part is provided with a first elastic piece, the first elastic piece has elasticity, and the first elastic piece is used for being matched with the fixed part;
when the movable part is propped against and the propped degree is increased, and the movable part moves relative to the fixed part, the deformation amount of the first elastic piece is increased;
after the external force action of the movable part is removed, the first elastic piece is restored to deform and resets the movable part.
As a preferred technical scheme of the present application, the first elastic member is made of rubber material, and the first elastic member is disposed at an end portion of the movable portion, which is used for abutting against the outer sleeve needle.
As a preferential technical scheme of the application, a first contact surface is arranged on the rotating block, a second contact surface is arranged on the groove, and the first contact surface is matched with the second contact surface;
when the movable part is abutted and the abutted degree is increased, and the movable part moves relative to the fixed part, the first contact surface slides relative to the second contact surface, the second contact surface guides the rotating block to rotate, and the bending degree of the elastic sheet in the initial state is reduced.
As a preferred technical scheme of the application, a second elastic piece is arranged on one side, facing the collecting chamber, of the elastic piece, the second elastic piece is matched with the elastic piece, the second elastic piece has elasticity, the second elastic piece synchronously bends and deforms along with the elastic piece, a plurality of V-shaped grooves are arranged on the second elastic piece, the size of each V-shaped groove can be changed according to the bending degree of the second elastic piece, and the bending degree of the elastic piece is inversely proportional to the size of each V-shaped groove.
As a preferred technical scheme of the application, the number of the elastic sheets is 1, when the elastic sheets are in an initial state, the end part, far away from the connecting part, of the elastic sheets is propped against the collecting part, so that the collecting part is blocked, and the part, propped against the collecting part, of the elastic sheets is an elastic area made of rubber materials;
or, the number of the elastic pieces is 2, the two elastic pieces are correspondingly arranged on the collecting part, when the elastic pieces are in an initial state, the ends, far away from the connecting part, of the two elastic pieces are propped against each other, so that the collecting part is blocked, and the propped parts of the two elastic pieces are elastic areas made of rubber materials.
As a preferred technical scheme of the application, an elastic film is connected between the rotating block and the fixed part body, the elastic film has elasticity, and the elastic film is used for blocking a gap between the rotating block and the fixed part body.
As a preferred technical scheme of the application, the collecting pipe comprises a collecting pipe first section and a collecting pipe second section, wherein the collecting pipe first section is detachably connected with the collecting pipe second section through threads, the collecting chamber and the collecting part are positioned on the collecting pipe first section, and the power assembly is positioned on the collecting pipe second section.
As a preferred embodiment of the present application, the power assembly includes a piston plate and a rebound structure for driving the piston plate to move, the moving piston plate being used for adjusting the size of the harvesting chamber and providing suction force for harvesting bone marrow.
As a preferred technical scheme of the application, the rebound structure comprises a spring and a push rod, wherein the spring has elasticity, the spring is connected with the piston plate and the collecting pipe, the push rod is in threaded connection with the collecting pipe, the push rod is propped against the piston plate, the size of the collecting chamber is in direct proportion to the deformation amount of the spring, and the push rod is used for moving along the central axis direction of the push rod by rotating the push rod relative to the collecting pipe.
Compared with the prior art, the application has the beneficial effects that:
1. in the scheme of the application, before the anticoagulant is used for bone marrow collection, the anticoagulant is placed in the first accommodating area in advance, or the anticoagulant is placed in the first accommodating area of the anticoagulant bone marrow collection device when the anticoagulant bone marrow collection device leaves a factory, the collection part is matched with the outer sleeve needle when the anticoagulant bone marrow collection is carried out, the power component provides suction force to enable the collection chamber to form negative pressure, so that the elastic sheet is deformed, the collection part is changed into a conducting state from a plugging state, and the anticoagulant bone marrow flows into the collection chamber through the outer sleeve needle and the collection part, so that the anticoagulant bone marrow is collected in the collection chamber after the anticoagulant bone marrow is extracted, the anticoagulant bone marrow collection device can be used as an anticoagulant tube in a short time, the anticoagulant bone marrow collection with the anticoagulant bone marrow can be effectively prevented from being aggregated, the anticoagulant bone marrow collection with the anticoagulant bone marrow can be directly sent for inspection, and the working efficiency of medical staff can be further improved;
the elastic sheet is bent towards one side of the collecting chamber, and the amount of the collected bone marrow is generally between 0.2ml and 0.5ml, so that the amount of the bone marrow is small, the collected bone marrow is easy to be positioned in an arc concave surface formed by the elastic sheet when a patient collects the bone marrow, and the reflux of the bone marrow can be prevented in the bone marrow collecting process;
Meanwhile, after the bone marrow extraction is finished, the elastic sheet is restored to an initial state, so that the collecting part is changed from a conducting state to a blocking state, the collecting chamber is convenient to form a sealed environment, and the bone marrow is convenient to send for inspection;
2. further, in the bone marrow extraction process, the movable part is propped against the outer sleeve needle, the propped degree is increased, and the movable part moves relative to the fixed part, so that the relative position relation between the rotating block and the groove is changed, and a rotating space is provided for the rotation of the rotating block relative to the fixed part body, so that the bending degree of the elastic piece in an initial state can be reduced, the rotating block can rotate relative to the fixed part body, the blocking force of the elastic piece when the elastic piece blocks the collecting part can be reduced, and therefore, the elastic piece is easier to deform under the action of the extracting force when the bone marrow is extracted, the collecting part is easier to be converted into a conducting state from the blocking state, and the smoothness of the bone marrow extraction into the collecting chamber is further improved;
3. further, by arranging the first elastic piece with elasticity, when the movable part moves relative to the fixed part, the deformation amount of the first elastic piece can be changed, and the first elastic piece can recover deformation after deformation, so that after the movable part moves relative to the fixed part, the movable part can be conveniently reset after the external force applied by the movable part is removed; thus, when the movable part is propped against the outer sleeve needle under the action of suction force provided by the power component, the propped degree of the movable part is inversely proportional to the bending degree of the elastic sheet, namely, the greater the propped degree of the movable part is, the smaller the bending degree of the elastic sheet is; furthermore, when bone marrow is not extracted, namely, when the movable part is not propped against the outer sleeve needle or the degree of propped against the outer sleeve needle is lower, the elastic sheet can have a larger bending degree, so that the blocking force of the elastic sheet when the elastic sheet blocks the collecting part can be increased, and the sealing performance of the elastic sheet when the elastic sheet blocks the collecting part can be further improved;
In the bone marrow extraction process, the movable part is propped against the outer sleeve needle, the propping degree is larger, so that the bending degree of the elastic sheet is reduced, namely the blocking force of the elastic sheet when the elastic sheet blocks the collecting part is reduced, further, on the premise that the power assembly provides constant suction force to deform the elastic sheet in the bone marrow extraction process and convert the collecting part into a conducting state so as to extract bone marrow, on the premise that the suction force provided by the power assembly is unchanged, and the bending degree of the elastic sheet is increased before or after bone marrow extraction, the blocking force of the corresponding elastic sheet when the elastic sheet blocks the collecting part is increased, the suction force provided by the power assembly is insufficient to enable the collecting part to be in the conducting state, so that the collecting part is blocked, and the power assembly provides suction force required for extracting bone marrow before bone marrow extraction, so that the collecting chamber forms negative pressure and the collecting part is in the blocking state; when bone marrow is extracted, the movable part is propped against the outer sleeve needle, and the propping degree is adjusted, so that the blocking force of the elastic piece when the collecting part is blocked is adjusted, the collecting part can be changed from a blocking state to a conducting state under the condition that the suction force is unchanged, and the bone marrow is extracted from the body into the collecting chamber; after the bone marrow extraction is finished, the degree of the offset between the movable part and the outer sleeve needle is reduced until the movable part is not offset with the outer sleeve needle, so that the blocking force is increased when the elastic piece blocks the collecting part, and the collecting part is changed from a conducting state to a blocking state under the condition that the suction force is unchanged, so that the collecting chamber is convenient to form a sealing environment after the bone marrow extraction is finished, the convenience of the extraction is improved, the safety performance of the extracted bone marrow is also improved, and the collected bone marrow can be prevented from being spilled out from the collecting part when the movable part is separated from the outer sleeve needle accidentally in the extraction process;
4. Further, the first contact surface is arranged on the rotating block, the second contact surface is arranged on the groove, so that when the movable part is propped against and the propped degree is increased, the movable part moves relative to the fixed part, the second contact surface plays a guiding role, the rotating block is guided to rotate, the bending degree of the elastic piece in the initial state is adjusted, the bending degree of the elastic piece in the bone marrow extraction process can be reduced, the bone marrow extraction is facilitated, the propped degree of the movable part and the outer sleeve needle is reduced until the movable part is separated after the bone marrow extraction is completed, the position relationship between the first contact surface and the second contact surface is gradually restored to the state before the bone marrow extraction on the basis that the movable part is reset, at the moment, the self-elastic action of the elastic piece is difficult to enable the rotating block to rotate relative to the fixed part body, the first contact surface is difficult to slide relative to the second contact surface, the self-locking effect is achieved, the sealing property of the elastic piece in the initial state can be improved, the second contact surface is also beneficial to guide the rotating block to rotate and adjust the bending degree of the elastic piece in the initial state;
5. further, a second elastic piece is arranged on one side of the elastic piece, which faces the collection chamber, and a plurality of V-shaped grooves are arranged on the second elastic piece, and the bending degree of the elastic piece is inversely proportional to the size of the V-shaped grooves, so that before bone marrow collection, namely in the preparation stage of bone marrow collection, the movable part is gradually propped against the outer sleeve needle, and the propping degree is gradually increased, the bending degree of the elastic piece is correspondingly reduced, so that the V-shaped grooves on the second elastic piece are enlarged, then in the bone marrow collection process, the suction force provided by the power assembly increases the bending degree of the elastic piece, so that the V-shaped grooves on the second elastic piece are reduced, therefore, after bone marrow is pumped into the collection chamber, bone marrow and an anticoagulant can contact the second elastic piece, and can fill part of the V-shaped grooves, and further, during bone marrow extraction, the anticoagulant is positioned on the second elastic piece in advance, the anticoagulant can be filled into the V-shaped groove preferentially, the bone marrow is contacted with the anticoagulant to be mixed in the process of continuously pumping the bone marrow from the patient to the collecting chamber, when the bending degree of the elastic sheet is reduced to seal the collecting part after the bone marrow is pumped, the V-shaped groove on the second elastic piece is enlarged, the flow of the liquid near the area of the V-shaped groove can be accelerated, the mixing of the anticoagulant and the bone marrow can be accelerated, then, the movable part and the outer sleeve needle are separated, the degree of the movable part which is abutted against the outer sleeve needle is gradually reduced, the movable block rotates relative to the fixed part body, the bending degree of the elastic sheet is increased, the V-shaped groove is reduced, the bone marrow and the anticoagulant in the V-shaped groove are pushed, and the pushed bone marrow and the anticoagulant are more easy to be mixed with the bone marrow and the anticoagulant in other areas of the collecting chamber, thereby improving the anticoagulation effect of the collected marrow;
And further, when the movable part is in a separated state with the outer sleeve needle, when the power assembly does not provide suction force, the bending degree of the elastic sheet can enable the V-shaped groove to be closed, so that when the marrow is collected and is subjected to inspection, the marrow can be prevented from being in the V-shaped groove, and the collected marrow can be conveniently extracted by medical staff;
when the anticoagulation bone marrow collection device is used for bone marrow extraction, before the movable part is separated from the outer sleeve needle, the bone marrow and the anticoagulation agent in the collection chamber can be mixed under the condition of no artificial vibration, so that the extracted bone marrow can be quickly mixed with the anticoagulation agent in a short time, and the shake of the anticoagulation bone marrow collection device can be avoided due to no artificial vibration, so that the shake of the outer sleeve needle can be avoided, discomfort of a patient can be reduced, the damage to bone marrow of the patient due to the shake of the outer sleeve needle can be avoided, the mixing of the anticoagulation agent and the bone marrow is facilitated, the condition that the bone marrow adheres to the inner wall of the anticoagulation bone marrow collection device due to the shake vibration can be avoided, and especially, the small dose of 0.2ml-0.5ml of the extracted bone marrow is aimed at by the application, so that the convenience of extracting the bone marrow from the anticoagulation bone marrow collection device in the inspection is further improved;
6. Further, through setting up collection pipe one section and collection pipe two sections, when the marrow is gathered and is accomplished and carry out the censoring, in the in-process of extracting the marrow that draws, can make collection pipe one section and collection pipe two sections separation to this is convenient for make collection pipe one section open, thereby is convenient for draw the indoor marrow of collection, has improved the convenience that the marrow was drawed.
Drawings
FIG. 1 is a schematic cross-sectional view of one embodiment of an anti-coagulant bone marrow harvesting device of the present application;
FIG. 2 is an enlarged schematic view of the portion A of the device of FIG. 1;
FIG. 3 is a schematic cross-sectional view of an anticoagulant bone marrow harvesting device according to one embodiment of the present application;
FIG. 4 is an enlarged schematic view of the structure of the portion B of FIG. 3 of an anticoagulated bone marrow collecting device according to the application;
FIG. 5 is a schematic cross-sectional view of another embodiment of an anti-coagulant bone marrow harvesting device of the present application;
FIG. 6 is a schematic view showing a partial structure of another embodiment of an anticoagulated bone marrow collecting device according to the application;
FIG. 7 is a schematic cross-sectional view of an anticoagulant bone marrow harvesting device according to another embodiment of the application, with the movable part being abutted against the movable part;
Fig. 8 is a schematic view showing a partial structure of an anticoagulant bone marrow harvesting device according to another embodiment of the application, when a movable part is abutted against the movable part;
FIG. 9 is a schematic view showing the structure of an anti-coagulant marrow harvesting device according to one embodiment of the present application when the anti-coagulant marrow harvesting device is mated with a trocar;
the figures indicate: 1-collecting tube, 2-collecting chamber, 3-collecting part, 4-outer sleeve needle, 5-first accommodation area, 6-elastic sheet, 7-connection part, 8-power component, 9-fixed part, 10-movable part, 11-fixed part body, 12-rotating block, 13-groove, 14-first elastic piece, 15-first contact surface, 16-second contact surface, 17-second elastic piece, 18-V-shaped groove, 19-elastic membrane, 20-collecting tube first section, 21-collecting tube second section, 22-piston plate, 23-rebound structure, 24-spring, 25-ejector rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the application.
Thus, the following detailed description of the embodiments of the application is not intended to limit the scope of the application, as claimed, but is merely representative of some embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Example 1
The anticoagulation bone marrow collecting device provided by the embodiment, referring to fig. 1-9, comprises a collecting tube 1, wherein a collecting chamber 2 and a collecting part 3 are arranged on the collecting tube 1, the collecting chamber 2 is communicated with the collecting part 3, the collecting part 3 is used for being matched with an outer sleeve needle 4, and in the bone marrow collecting process, bone marrow flows into the collecting chamber 2 through the outer sleeve needle 4 and the collecting part 3 in sequence;
A first accommodating area 5 for accommodating anticoagulant is arranged in the collecting chamber 2;
the collecting part 3 is provided with an elastic sheet 6, a part of the elastic sheet 6 connected with the collecting part 3 is a connecting part 7, the elastic sheet 6 has elasticity, the elastic sheet 6 has an initial state, the elastic sheet 6 in the initial state is in a bending shape, the elastic sheet 6 is bent towards one side of the collecting chamber 2, and the elastic sheet 6 in the initial state is used for sealing the collecting part 3;
and still be provided with power pack 8 on the collection tube 1, power pack 8 is used for providing suction, in the marrow collection process, suction is used for making elastic sheet 6 warp, makes collection portion 3 changes from shutoff form to switch on the form to make the marrow flow through outer trocar 4 and collection portion 3 to collection room 2.
In the application, before the anti-coagulation bone marrow collecting device is used for collecting bone marrow, an anti-coagulation agent is placed in the first accommodating area 5 in advance, or the anti-coagulation bone marrow collecting device is characterized in that when leaving a factory, the anti-coagulation agent is placed in the first accommodating area 5, the collecting part 3 is matched with the outer sleeve needle 4 during bone marrow extraction, the power component 8 provides suction force to enable negative pressure to be formed in the collecting chamber 2, so that the elastic sheet 6 is deformed, the collecting part 3 is changed into a conducting state from a plugging state, bone marrow flows into the collecting chamber 2 through the outer sleeve needle 4 and the collecting part 3, so that the bone marrow is collected in the collecting chamber 2 after extraction, and the anti-coagulation agent is arranged in the collecting chamber 2, so that the anti-coagulation agent and the bone marrow can be mixed in a short time, the phenomenon that the extracted bone marrow is effectively prevented from being coagulated, and the anti-coagulation bone marrow collecting device can be used as an anti-coagulation tube, the anti-coagulation bone marrow collecting device for collecting the bone marrow with the bone marrow can be directly sent to a medical staff to be detected, and the working efficiency of medical staff can be further improved;
The elastic sheet 6 of the application is bent towards one side of the collecting chamber 2, and the amount of the collected bone marrow is usually between 0.2ml and 0.5ml, and the amount of the bone marrow is small, so that the collected bone marrow is easy to be positioned in an arc concave surface formed by the elastic sheet 6 when the bone marrow is collected by a patient, and the reflux of the bone marrow can be prevented in the bone marrow collecting process;
meanwhile, after the bone marrow extraction is completed, the elastic sheet 6 is restored to the initial state, so that the collecting part 3 is changed from a conducting state to a blocking state, thereby facilitating the formation of a sealing environment of the collecting chamber 2 and facilitating the inspection of bone marrow.
As a preferred technical scheme of the application, the collecting part 3 comprises a fixed part 9 and a movable part 10, the fixed part 9 is communicated with the collecting tube 1, and the movable part 10 is sleeved on the fixed part 9;
the fixing part 9 comprises a fixing part body 11 and a rotating block 12, the rotating block 12 is rotatably arranged on the fixing part body 11, and the elastic sheet 6 is fixed on the rotating block 12;
a groove 13 is arranged on the movable part 10, and the groove 13 is matched with and propped against the rotating block 12;
the movable portion 10 is configured to abut against the outer sleeve needle 4, when the movable portion 10 is abutted against and the abutted degree increases, and the movable portion 10 moves relative to the fixed portion 9, the relative position between the rotating block 12 and the groove 13 changes, so that the rotating block 12 rotates relative to the fixed portion body 11, the bending degree of the elastic piece 6 in the initial state is reduced, and the bending degree of the elastic piece 6 in the initial state is proportional to the plugging force of the elastic piece 6 when the elastic piece 6 plugs the collecting portion 3.
Further, in the bone marrow extraction process, the movable part 10 is abutted against the outer sleeve needle 4, the abutted degree is increased, and the movable part 10 moves relative to the fixed part 9, so that the relative position relationship between the rotary block 12 and the groove 13 is changed, a rotary space is provided for the rotation of the rotary block 12 relative to the fixed part body 11, the bending degree of the elastic piece 6 in the initial state can be reduced, the rotary block 12 can rotate relative to the fixed part body 11, the blocking force of the elastic piece 6 when the collecting part 3 is blocked can be reduced, and therefore, the elastic piece 6 is easier to deform under the action of the extracting force when the bone marrow is extracted, the collecting part 3 is easier to be converted into a conducting state from the blocking state, and the smoothness of the bone marrow extraction into the collecting chamber 2 is further improved.
As a preferred technical solution of the present application, the movable portion 10 is provided with a first elastic member 14, the first elastic member 14 has elasticity, and the first elastic member 14 is configured to cooperate with the fixed portion 9;
when the movable portion 10 is abutted and the abutted degree is increased, and the movable portion 10 moves relative to the fixed portion 9, the deformation amount of the first elastic member 14 is increased;
after the external force applied to the movable portion 10 is removed, the first elastic member 14 recovers the deformation and resets the movable portion 10.
Further, by arranging the first elastic member 14 with elasticity, when the movable portion 10 moves relative to the fixed portion 9, the deformation amount of the first elastic member 14 can be changed, and the first elastic member 14 can recover deformation after deformation, so that after the movable portion 10 moves relative to the fixed portion 9, the movable portion 10 can be conveniently reset after the external force applied to the movable portion 10 is removed; in this way, when the movable portion 10 abuts against the outer needle 4 without the suction force provided by the power unit 8, the abutting degree of the movable portion 10 is inversely proportional to the bending degree of the elastic piece 6, that is, the greater the abutting degree of the movable portion 10, the smaller the bending degree of the elastic piece 6; furthermore, when bone marrow is not extracted, that is, when the movable part 10 does not abut against the outer sleeve needle 4 or the degree of abutment of the movable part 10 against the outer sleeve needle 4 is low, the elastic sheet 6 can be made to have a large degree of bending, so that the blocking force of the elastic sheet 6 when the collecting part 3 is blocked can be increased, and the sealing property of the elastic sheet 6 when the collecting part 3 is blocked can be further improved;
in the bone marrow extraction process, the movable part 10 is propped against the outer sleeve needle 4, the propping degree is larger, so that the bending degree of the elastic sheet 6 is reduced, namely the plugging force when the elastic sheet 6 plugs the collecting part 3 is reduced, further, the power assembly 8 is enabled to provide constant suction force to deform the elastic sheet 6 in the bone marrow extraction process, the collecting part 3 is enabled to be turned into a conducting state, on the premise that the bone marrow is extracted, the suction force provided by the power assembly 8 is unchanged,
And when the elastic sheet 6 is bent to a larger extent before or after bone marrow extraction, the corresponding elastic sheet 6 has a larger plugging force when plugging the collecting part 3, so that the suction force provided by the power component 8 is insufficient to lead the collecting part 3 to be in a conductive state, and the collecting part 3 is plugged,
therefore, before bone marrow extraction, the power component 8 can provide the suction force required by bone marrow extraction, the collection chamber 2 can form negative pressure, and the collection part 3 can be in a blocking state; further, when bone marrow is extracted, the movable part 10 is abutted against the outer sleeve needle 4, and the degree of abutment is adjusted, so that the blocking force of the elastic piece 6 when the collecting part 3 is blocked is adjusted, and the collecting part 3 can be changed from the blocking state to the conducting state under the condition that the suction force is unchanged, so that bone marrow is extracted from the body into the collecting chamber 2; after the bone marrow extraction is finished, the degree of the offset between the movable part 10 and the outer sleeve needle 4 is reduced until the movable part 10 is not offset with the outer sleeve needle 4, so that the blocking force when the elastic piece 6 blocks the collecting part 3 is increased, the collecting part 3 is changed from a conducting state to a blocking state under the condition of unchanged suction force, the collecting chamber 2 is convenient to form a sealed environment after the bone marrow extraction is finished, the convenience of the extraction is improved, the safety performance of the extraction of the bone marrow is also improved, and the collected bone marrow can be prevented from being spilled out of the collecting part 3 when the movable part 10 is accidentally separated from the outer sleeve needle 4 in the extraction process.
As a preferred embodiment of the present application, the first elastic member 14 is made of rubber, and the first elastic member 14 is disposed at an end portion of the movable portion 10 for abutting against the outer needle 4.
Further, the first elastic member 14 is configured as a rubber structure, and the first elastic member 14 is disposed at the end portion of the movable portion 10, which is used for abutting against the outer sleeve needle 4, so that when bone marrow is collected, the first elastic member 14 is located between the movable portion 10 and the outer sleeve needle 4 in the process of abutting against the outer sleeve needle 4 by the movable portion 10, and the first elastic member 14 can be deformed, thereby avoiding a gap between the first elastic member 14 and the outer sleeve needle 4 when the movable portion 10 abuts against the outer sleeve needle 4, and facilitating the bone marrow to be sucked into the collecting chamber 2.
As a preferred technical scheme of the present application, the rotating block 12 is provided with a first contact surface 15, the groove 13 is provided with a second contact surface 16, and the first contact surface 15 is matched with the second contact surface 16;
when the movable portion 10 is abutted and the abutted degree is increased and the movable portion 10 moves relative to the fixed portion 9, the first contact surface 15 slides relative to the second contact surface 16, and the second contact surface 16 guides the rotating block 12 to rotate, and the bending degree of the elastic sheet 6 in the initial state is reduced.
Further, by providing the first contact surface 15 on the rotating block 12 and providing the second contact surface 16 on the groove 13, when the movable portion 10 is abutted and the abutted degree increases, the movable portion 10 moves relative to the fixed portion 9, the second contact surface 16 thereof plays a guiding role, and the rotating block 12 is guided to rotate, so as to adjust the bending degree of the elastic piece 6 in the initial state, and reduce the bending degree of the elastic piece 6 during bone marrow extraction, thereby facilitating bone marrow extraction, and after the bone marrow extraction is completed, the abutting degree of the movable portion 10 and the outer sleeve needle 4 is reduced until the movable portion 10 is separated, and on the basis that the movable portion 10 is reset, the positional relationship between the first contact surface 15 and the second contact surface 16 is gradually restored to the state before bone marrow extraction, at this time, the self-elastic action of the elastic piece 6 is difficult to enable the rotating block 12 to rotate relative to the fixed portion body 11, the first contact surface 15 is difficult to slide relative to the second contact surface 16, so as to play a self-locking role, the sealing property of the elastic piece 6 in blocking the collecting portion 3 in the initial state can be improved, and the elastic piece 6 in the initial state is also adjusted by the bending degree of the second contact surface 16 is guided by the rotating block 12.
Example two
On the basis of the technical scheme of the embodiment, further, referring to fig. 1-9, a second elastic member 17 is disposed on a side of the elastic sheet 6 facing the collecting chamber 2, the second elastic member 17 is adapted to the elastic sheet 6, the second elastic member 17 has elasticity, the second elastic member 17 synchronously bends and deforms along with the elastic sheet 6, a plurality of V-shaped grooves 18 are disposed on the second elastic member 17, the size of the V-shaped grooves 18 can be changed according to the bending degree of the second elastic member 17, and the bending degree of the elastic sheet 6 is inversely proportional to the size of the V-shaped grooves 18.
Further, a second elastic member 17 is disposed on the side of the elastic sheet 6 facing the collecting chamber 2, and a plurality of V-shaped grooves 18 are disposed on the second elastic member 17, and the bending degree of the elastic sheet 6 is inversely proportional to the size of the V-shaped grooves 18, so that, before bone marrow collection, i.e. in the preparation stage of bone marrow collection, the movable part 10 gradually abuts against the outer sleeve needle 4, and the abutting degree is gradually increased, the bending degree of the elastic sheet 6 is correspondingly reduced, so that the V-shaped grooves 18 on the second elastic member 17 are enlarged, then, in the process of bone marrow collection, the bending degree of the elastic sheet 6 is increased by the suction force provided by the power assembly 8, so that the V-shaped grooves 18 on the second elastic member 17 are reduced, and therefore, after bone marrow is drawn into the collecting chamber 2, bone marrow and anticoagulant can contact the second elastic member 17 and can fill part of the V-shaped grooves 18, further, in the process of bone marrow extraction, the anticoagulant is placed on the second elastic member 17 in advance, that is, the anticoagulant can be filled into the V-shaped groove 18 preferentially, in the process that bone marrow is continuously pumped from the patient to the collecting chamber 2, the bone marrow contacts the anticoagulant and is mixed, after the bone marrow is pumped, when the bending degree of the elastic sheet 6 is reduced to seal the collecting part 3, the V-shaped groove 18 on the second elastic member 17 is enlarged at the moment, the flow of liquid near the area of the V-shaped groove 18 can be accelerated, so that the mixing of the anticoagulant and the bone marrow can be accelerated, then, in the process that the movable part 10 is separated from the outer sleeve needle 4, the abutting degree of the movable part 10 and the outer sleeve needle 4 is gradually reduced, the movable block rotates relative to the fixed part body 11, the bending degree of the elastic sheet 6 is increased, the V-shaped groove 18 is reduced, the bone marrow and the anticoagulant in the V-shaped groove 18 are pushed, the marrow and the anticoagulant after extrusion are easier to mix with the marrow and the anticoagulant in other areas in the collection chamber 2, so that the anticoagulation effect of the collected marrow can be improved;
And further, when the movable part 10 is in a separated state with the outer sleeve needle 4, when the power assembly 8 does not provide suction force, the bending degree of the elastic sheet 6 can enable the V-shaped groove 18 to be closed, so that when the marrow is collected and is subjected to delivery inspection, the marrow can be prevented from being positioned in the V-shaped groove 18, and the collected marrow can be conveniently extracted by medical staff;
in addition, when the anticoagulation bone marrow collection device of the application is used for bone marrow extraction, before the movable part 10 is separated from the outer sleeve needle 4, bone marrow and an anticoagulant in the collection chamber 2 can be mixed under the condition of no artificial vibration, the extracted bone marrow can be quickly mixed with the anticoagulant in a short time, and the anticoagulation bone marrow collection device can be prevented from shaking due to no artificial vibration, so that the outer sleeve needle 4 can be prevented from shaking, discomfort of a patient can be reduced, and damage to bone of the patient caused by shaking the outer sleeve needle 4 can be prevented.
Example III
On the basis of the second technical solution of the embodiment, further, referring to fig. 1 to 9, the number of the elastic pieces 6 is 1, when the elastic pieces 6 are in the initial state, the end portion, far away from the connecting portion 7, of the elastic piece 6 abuts against the collecting portion 3, so as to seal the collecting portion 3, and the portion, abutting against the collecting portion 3, of the elastic piece 6 is an elastic area made of rubber material;
Or, the number of the elastic pieces 6 is 2, the two elastic pieces 6 are correspondingly arranged on the collecting part 3, when the elastic pieces 6 are in an initial state, the ends, far away from the connecting part 7, of the two elastic pieces 6 are propped against each other, so that the collecting part 3 is blocked, and the propped parts of the two elastic pieces 6 are elastic areas made of rubber materials.
Further, by providing the elastic region on the elastic sheet 6, the sealability of the elastic sheet 6 when the acquisition unit 3 is sealed can be improved.
As a preferred embodiment of the present application, an elastic film 19 is connected between the rotating block 12 and the fixed portion body 11, the elastic film 19 has elasticity, and the elastic film 19 is used for sealing a gap between the rotating block 12 and the fixed portion body 11.
Further, by providing the elastic film 19 having elasticity, the elastic film 19 can be deformed according to the rotation of the rotating block 12 in addition to the elastic film 19 blocking the gap between the rotating block 12 and the fixed portion body 11, thereby further improving the blocking effect of the elastic film 19.
As a preferred technical scheme of the present application, the collecting tube 1 includes a collecting tube first section 20 and a collecting tube second section 21, the collecting tube first section 20 and the collecting tube second section 21 are detachably connected by threads, the collecting chamber 2 and the collecting portion 3 are located on the collecting tube first section 20, and the power assembly 8 is located on the collecting tube second section 21.
Further, by arranging the first collecting tube section 20 and the second collecting tube section 21, after the bone marrow collection is completed and during the inspection, the first collecting tube section 20 and the second collecting tube section 21 can be separated in the process of extracting the extracted bone marrow, so that the first collecting tube section 20 is conveniently opened, the bone marrow in the collecting chamber 2 is conveniently extracted, and the convenience of bone marrow extraction is improved.
Embodiment four: referring to figures 1, 3, 5 and 7,
on the basis of the third embodiment, the power assembly 8 further comprises a piston plate 22 and a rebound structure 23, wherein the rebound structure 23 is used for driving the piston plate 22 to move, and the moved piston plate 22 is used for adjusting the size of the collecting chamber 2 and providing suction force for collecting bone marrow.
As a preferred embodiment of the present application, the rebound structure 23 includes a spring 24 and a jack 25, the spring 24 has elasticity, the spring 24 connects the piston plate 22 and the collecting tube 1, the jack 25 is screwed with the collecting tube 1, the jack 25 abuts against the piston plate 22, and the size of the collecting chamber 2 is proportional to the size of the deformation of the spring 24, and the jack 25 is used to move along the central axis direction of the jack 25 by rotating the jack 25 relative to the collecting tube 1.
Further, by providing the piston plate 22, the spring 24 and the ejector rod 25, the spring 24 provides elastic force to drive the piston plate 22 to move, and by rotating the ejector rod 25 relative to the collection chamber 2, the ejector rod 25 moves along the axial direction of the axis of the ejector rod, so as to adjust the position of the ejector rod 25, thereby moving the piston plate 22, thereby providing suction force for the collection of bone marrow, and by controlling the rotation of the ejector rod 25, the movement of the piston plate 22 is conveniently controlled, thereby conveniently controlling the suction force, and further conveniently controlling the amount of the extracted bone marrow.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.
Claims (10)
1. An anticoagulant bone marrow harvesting device, characterized in that: the device comprises a collecting pipe, wherein a collecting chamber and a collecting part are arranged on the collecting pipe, the collecting chamber is communicated with the collecting part, the collecting part is used for being matched with an outer sleeve needle, and in the bone marrow collecting process, bone marrow flows into the collecting chamber through the outer sleeve needle and the collecting part in sequence;
A first accommodating area for accommodating an anticoagulant is arranged in the collecting chamber;
the collecting part is provided with an elastic sheet, the part, connected with the collecting part, of the elastic sheet is a connecting part, the elastic sheet has elasticity, the elastic sheet in the initial state is in a bent shape, the elastic sheet is bent towards one side of the collecting chamber, and the elastic sheet in the initial state is used for sealing the collecting part;
and the collecting tube is also provided with a power component, the power component is used for providing suction force, and in the bone marrow collecting process, the suction force is used for deforming the elastic sheet, so that the collecting part is changed from a plugging shape into a conducting shape, and bone marrow flows into the collecting chamber through the outer sleeve needle and the collecting part.
2. An anticoagulant bone marrow harvesting device as set forth in claim 1 wherein: the collecting part comprises a fixed part and a movable part, the fixed part is communicated with the collecting pipe, and the movable part is sleeved on the fixed part;
the fixing part comprises a fixing part body and a rotating block, the rotating block is rotatably arranged on the fixing part body, and the elastic piece is fixed on the rotating block;
The movable part is provided with a groove which is matched with and propped against the rotating block;
the movable part is used for propping against the outer sleeve needle, when the movable part is propped against and the propped degree is increased, and the movable part moves relative to the fixed part, the relative position between the rotating block and the groove changes, so that the rotating block rotates relative to the fixed part body, the bending degree of the elastic sheet in an initial state is reduced, and the bending degree of the elastic sheet in the initial state is in direct proportion to the plugging force of the elastic sheet when the elastic sheet plugs the collecting part.
3. An anticoagulant bone marrow harvesting device as set forth in claim 2 wherein: the movable part is provided with a first elastic piece which has elasticity and is used for being matched with the fixed part;
when the movable part is propped against and the propped degree is increased, and the movable part moves relative to the fixed part, the deformation amount of the first elastic piece is increased;
after the external force action of the movable part is removed, the first elastic piece is restored to deform and resets the movable part.
4. An anticoagulant bone marrow harvesting device as claimed in claim 3 wherein: the first elastic piece is made of rubber materials, and the first elastic piece is arranged at the end part of the movable part, which is used for propping against the outer sleeve needle.
5. An anticoagulant bone marrow harvesting device as set forth in claim 4 wherein: the rotating block is provided with a first contact surface, the groove is provided with a second contact surface, and the first contact surface is matched with the second contact surface;
when the movable part is abutted and the abutted degree is increased, and the movable part moves relative to the fixed part, the first contact surface slides relative to the second contact surface, the second contact surface guides the rotating block to rotate, and the bending degree of the elastic sheet in the initial state is reduced.
6. An anticoagulant bone marrow harvesting device as set forth in claim 5 wherein: the orientation on the elastic piece one side of gathering the room is provided with the second elastic component, the second elastic component with elastic piece looks adaptation, the second elastic component has elasticity, the second elastic component is along with the elastic piece synchronous bending deformation, just be provided with a plurality of V-arrangement grooves on the second elastic component, the size of V-arrangement groove can be according to the bending degree of second elastic component changes, just the bending degree of elastic piece with the size inverse proportion of V-arrangement groove.
7. An anticoagulant bone marrow harvesting device as set forth in claim 6 wherein: the number of the elastic sheets is 1, when the elastic sheets are in an initial state, the end parts, far away from the connecting parts, of the elastic sheets are propped against the collecting parts, so that the collecting parts are blocked, and the parts, propped against the collecting parts, of the elastic sheets are elastic areas made of rubber materials;
Or, the number of the elastic pieces is 2, the two elastic pieces are correspondingly arranged on the collecting part, when the elastic pieces are in an initial state, the ends, far away from the connecting part, of the two elastic pieces are propped against each other, so that the collecting part is blocked, and the propped parts of the two elastic pieces are elastic areas made of rubber materials.
8. An anticoagulant bone marrow harvesting device as set forth in claim 7 wherein: the elastic membrane is connected between the rotating block and the fixed part body, and is elastic and used for blocking a gap between the rotating block and the fixed part body.
9. An anti-coagulant bone marrow harvesting device according to any one of claims 1-8, wherein: the collecting pipe comprises a collecting pipe section I and a collecting pipe section II, the collecting pipe section I and the collecting pipe section II are detachably connected through threads, the collecting chamber and the collecting part are located on the collecting pipe section I, and the power assembly is located on the collecting pipe section II.
10. An anticoagulant bone marrow harvesting device as set forth in claim 9 wherein: the power assembly comprises a piston plate and a rebound structure, wherein the rebound structure is used for driving the piston plate to move, and the moved piston plate is used for adjusting the size of the collecting chamber and providing suction force for collecting bone marrow;
The spring is elastic, the spring is connected with the piston plate and the collecting pipe, the ejector rod is in threaded connection with the collecting pipe, the ejector rod is propped against the piston plate, the size of the collecting chamber is in direct proportion to the deformation of the spring, and the ejector rod is used for enabling the ejector rod to move along the central axis direction of the ejector rod by enabling the ejector rod to rotate relative to the collecting pipe.
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| CN202310843872.3A CN116549028B (en) | 2023-07-11 | 2023-07-11 | Anticoagulation bone marrow collection system |
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| CN202310843872.3A CN116549028B (en) | 2023-07-11 | 2023-07-11 | Anticoagulation bone marrow collection system |
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| CN116549028A (en) | 2023-08-08 |
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