CN210095782U

CN210095782U - Marrow extraction element for hematology department

Info

Publication number: CN210095782U
Application number: CN201821651509.2U
Authority: CN
Inventors: 张卉; 曾明月; 黄倩倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-10-10
Filing date: 2018-10-10
Publication date: 2020-02-21
Anticipated expiration: 2028-10-10

Abstract

The utility model relates to a bone marrow extraction device for the blood internal medicine, which comprises a first section and a second section, wherein the first section can be used for extracting bone marrow, and the second section can be used for injecting anesthetic; wherein, at least when the bone marrow is extracted, the first needle of the first section is inserted into at least one part of the cavity for containing the anesthetic and the second needle of the second section; be equipped with the branch portion that can be used for pushing away to penetrate the anaesthetic on the second section, branch portion is according to pushing away that penetrates the anaesthetic and the mode setting that the puncture direction of second syringe needle becomes the contained angle, the utility model discloses simple structure just can be convenient for medical personnel's operation, can alleviate medical personnel's intensity of labour.

Description

Marrow extraction element for hematology department

Technical Field

The utility model relates to a medical instrument especially relates to a bone marrow extraction element for hematology department.

Background

When a patient is examined in a hematology department, not only blood of the patient needs to be extracted for testing, but also bone marrow fluid needs to be extracted for testing. Puncture needle and puncture equipment are needed to be utilized to perforate when bone marrow liquid is extracted, then a suction tube is utilized to absorb the bone marrow liquid, and meanwhile, anesthesia is needed to be adopted when a patient is too painful.

Therefore, devices have appeared in the prior art which allow to extract bone marrow fluid and to inject an anesthetic agent with only one puncture.

For example, chinese patent document with publication number CN108403151A discloses a bone marrow puncture extraction device for blood medicine, which comprises a bottom plate, a support plate is arranged in the middle of the upper surface of the bottom plate, the support plate is L-shaped, a control switch is arranged in the middle of the side surface of the support plate, an input end of the control switch is electrically connected with an output end of an external power supply, a lead screw is arranged between a horizontal plate of the support plate and the bottom plate, a lead screw motor is connected to the outer surface of the lead screw in a threaded manner, an input end of the lead screw motor is electrically connected with an output end of the control switch, a connecting plate is arranged on the outer surface of the lead screw motor, snap rings are arranged on the side surfaces of the connecting plate, the number of the snap rings is two, an anesthesia syringe is sleeved inside one of the snap rings, a. This marrow puncture draw-out device for hematology dept, convenient to use can directly carry out the marrow extraction after the anesthesia puncture, the degree of depth of accurate control puncture moreover. However, the device has the problems of complex structure, high cost and inconvenient operation.

In the prior art, bone marrow aspiration comprises three steps: positioning, anaesthetizing and puncturing. The blood disease knowledge base discloses the steps of prior art bone marrow aspiration:

anesthesia: the iodophor is sterilized at a puncture position for 3 times, a hole towel is laid, 2% lidocaine, local anesthesia and local anesthesia are selected to be injected intradermally at the center of the puncture point when the local anesthesia is performed, the inclined plane of an injection needle is outward, the needle and the skin are inserted into the skin in an included angle of about 15-30 degrees, then the inclined plane of the needle and the skin are pushed in parallel, the injection can be performed after the inclined plane completely enters, a skin dome with the diameter of about 1cm is formed, at the moment, the skin dome is in a urticaria shape or an orange skin shape, the intradermal anesthesia is successful, the needle is pulled out, the anesthesia is continued by vertically inserting the needle in the center of the skin dome, the layer-by-layer anesthesia method is adopted, namely, the needle is inserted → the blood return is not performed → the injection, the circulation is performed until the hard sensation cannot be pushed again under the needle, at the periosteum is reached, if the hard. The injection amount of the medicine on the periosteum is more than that, and the medicine can be injected at 3-5 points near the first point according to the feeling of the patient in the anesthesia process and the tolerance condition of the patient to pain, especially for taking a bone marrow biopsy or considering that the patient can be difficultly operated, so as to avoid obvious pain of the patient when the puncture is repeated (because the puncture is performed at another point). The anesthesia can be performed by asking if there is pain or not to know the effect of anesthesia.

Puncturing: checking whether the puncture needle is abnormal or not and adjusting the length of the needle, fixing the puncture part by the left hand, vertically puncturing the puncture needle by the right hand to a certain depth, wherein the needle has a hard stone-like feeling under the needle, which indicates that the bone surface is reached, if the needle has no feeling to the estimated depth, which indicates that the skin of the puncture point is changed, the needle can slightly probe left and right multi-functional bone surfaces, forcibly puncturing a periosteum to inquire whether the bone surface has pain or not, if the bone surface has obvious pain or cannot be tolerated by a patient, adding a anesthetic, if the bone surface has slight pain or cannot be tolerated by the patient, continuing puncturing, rotating the puncture needle back and forth to push, stopping pushing until the resistance is obviously reduced or the bone surface has loose feeling, pulling out a needle core, and sucking 0.2ml of bone marrow by a 10ml dry syringe.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a bone marrow extraction device for the blood internal medicine, which comprises a first section and a second section, wherein the first section can be used for extracting bone marrow, and the second section can be used for injecting anesthetic; wherein, at least when the bone marrow is extracted, the first needle of the first section is inserted into at least one part of the cavity for containing the anesthetic and the second needle of the second section; the second section is provided with a branch part which can be used for pushing anesthetic, and the branch part is arranged in a mode that an included angle is formed between the pushing direction of the pushing anesthetic and the puncturing direction of the second needle head.

According to a preferred embodiment, the angle is a right angle or an obtuse angle.

According to a preferred embodiment, the first section is provided with a first chamber for receiving the extracted bone marrow and a first piston rod arranged in the first chamber, the sliding direction of the first piston rod coinciding with the puncturing direction of the second needle.

According to a preferred embodiment, the second section further comprises a trunk portion communicating with the branch portion, the second section is detachably connected to the first section by the trunk portion, and the first needle is inserted into a cavity of the trunk portion and the second needle.

According to a preferred embodiment, the detachable connection is at least one of a threaded connection, a bayonet connection and a flange connection.

According to a preferred embodiment, the trunk portion is provided with a second chamber for containing anesthetic, the branch portion is provided with a third chamber for containing anesthetic, the second chamber and the third chamber are communicated with each other, a second piston rod is arranged in the third chamber, and the ejection direction of the second piston rod and the puncture direction of the second needle head are arranged in an included angle mode.

According to a preferred embodiment, one end of the second chamber is an open end and the open end is closed after the second section and the first section are connected in place to form a second chamber which can be used to contain at least part of the anaesthetic agent.

According to a preferred embodiment, the first needle comprises a first flow passage and a first needle hole arranged at the end of the first flow passage, and the second needle comprises a second flow passage and a second needle hole and a third needle hole communicated with the second flow passage, wherein after the second section is connected to the first section, the first needle is inserted into the third needle hole and is tightly connected with the outer wall of the third needle hole, so that the first flow passage and the second flow passage are isolated from each other.

According to a preferred embodiment, the first section and the branch portion are provided with a scale indicating an extraction amount of bone marrow and a scale indicating an injection amount of anesthetic, respectively.

According to a preferred embodiment, the end of the first section remote from the first needle is provided with at least two wings projecting outwards.

The utility model provides a pair of bone marrow extraction element for hematology dept has following advantage at least:

(1) the utility model has simple structure, convenient manufacture and low cost;

(2) the utility model discloses can be convenient for medical personnel to operate, medical personnel can stimulate first piston rod on one hand and extract the marrow, and press the injection anesthetic of second piston rod with the thumb of another hand, need not change the gesture that is used for extracting the hand of marrow originally and injects the anesthetic, alleviates medical personnel's intensity of labour.

Drawings

FIG. 1 is a simplified cross-sectional view of a preferred embodiment of the present invention;

FIG. 2 is a simplified partial cross-sectional view of a preferred embodiment of the present invention;

FIG. 3 is a simplified cross-sectional view of a preferred embodiment of a second needle;

FIG. 4 is a simplified structural schematic of a preferred embodiment of the present invention; and

fig. 5 is an exploded schematic view of a preferred embodiment of the present invention.

List of reference numerals

110: first section 120: second section 210: trunk part

220: branch portion 310: first needle 320: second needle

410: first chamber 420: second chamber 430: third chamber

510: first piston rod 520: second piston rod 610: first flow channel

620: second flow passage 710: first pinhole 720: second pinhole

730 third needle hole 800 wing α

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are used in the orientation or positional relationship indicated on the basis of the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it is also to be understood that the terms "first", "second", and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, the terms "plurality" or "a plurality", if any, mean two or more unless specifically limited otherwise.

In the description of the present invention, it should be understood that the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, and may be fixed, detachable, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To one of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood as a matter of context, unless otherwise explicitly stated and/or defined.

In the description of the present invention, it should also be understood that unless otherwise explicitly specified or limited, "over" or "under" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

It should be noted that the drawings are not drawn according to actual dimensions, and only express the corresponding principle, and in the actual process, manufacturers can adjust the dimensions according to the cost, the mold opening difficulty, the customer requirement and the like.

According to a preferred embodiment, a bone marrow extraction device for hematology department may include a first section 110 and/or a second section 120. preferably, the device may include a first section 110 capable of being used for extracting bone marrow and a second section 120 capable of being used for injecting anesthetic, at least when bone marrow is extracted or when the first section 110 and the second section 120 are completely connected with each other, the first needle 310 of the first section 110 may be inserted into at least a part of a cavity of the second section 120 for containing anesthetic and the second needle 320. the second section 120 may be provided with a branch 220 capable of being used for injecting anesthetic, the branch 220 may be disposed in such a manner that the injection direction of the injected anesthetic forms an angle α with the injection direction of the second needle 320. that is, the injection direction forms an angle α with the injection direction.

According to a preferred embodiment, included angle α may be a right or obtuse angle, particularly preferably between 90 and 150, and most preferably between 100 and 120, thereby allowing the practitioner to push the anesthetic agent through the thumb in a manner that is more convenient for the practitioner to operate.

According to a preferred embodiment, first section 110 may be provided with a first chamber 410 for receiving extracted bone marrow and a first piston rod 510 disposed within first chamber 410. The sliding direction of the first piston rod 510 may coincide with the puncturing direction of the second needle 320. For example, the sliding direction and the puncturing direction are parallel to each other.

According to a preferred embodiment, the second section 120 may include a trunk portion 210 communicating with a branch portion 220. The second section 120 may be removably connected to the first section 110 by a stem 210. The first needle 310 may be inserted into the cavity of the stem 210 and the second needle 320.

According to a preferred embodiment, the detachable connection may be at least one of a threaded connection, a bayonet connection and a flange connection.

According to a preferred embodiment, the stem portion 210 may be provided with a second chamber 420 for containing an anesthetic, the branch portion 220 may be provided with a third chamber 430 for containing an anesthetic, the second chamber 420 and the third chamber 430 may be in communication with each other, a second piston rod 520 may be disposed within the third chamber 430, and the ejection direction of the second piston rod 520 may be disposed at an angle α from the piercing direction of the second needle 320.

According to a preferred embodiment, one end of the second chamber 420 may be an open end. The open end may be closed after the second section 120 and the first section 110 are connected in place to form a second chamber 420 that can be used to contain at least a portion of the anesthetic agent.

According to a preferred embodiment, the first needle 310 may include a first flow passage 610 and a first needle hole 710 provided at an end of the first flow passage 610. The second needle 320 may include a second flow passage 620 and a second needle hole 720 and a third needle hole 730 communicating with the second flow passage 620. After the second segment 120 is coupled to the first segment 110, the first needle 310 may be inserted into the third needle hole 730 and may be fitted to an outer wall of the third needle hole 730 to isolate the first flow channel 610 and the second flow channel 620 from each other. Thus, the second needle hole is used for injecting anesthetic, the first needle hole extracts bone marrow through the third needle hole, and the first flow channel 610 does not extract anesthetic from the second flow channel 620 when extracting bone marrow.

According to a preferred embodiment, the first section 110 and the branch part 220 may be provided with a scale indicating an extraction amount of bone marrow and a scale indicating an injection amount of anesthetic, respectively.

According to a preferred embodiment, the end of the first segment 110 remote from the first needle 310 may be provided with at least two wings 800 protruding outwards.

Of course, more broadly, the present invention is not limited to use in hematology, and may be used as a general bone marrow extraction device. Namely, the utility model discloses a marrow extraction element or a marrow extractor equivalently.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A bone marrow extraction device for blood medicine is characterized by comprising

A first section (110) usable for extracting bone marrow and a second section (120) usable for injecting an anesthetic;

wherein, at least when extracting bone marrow, the first needle (310) of the first section (110) is inserted into at least a part of the cavity for containing anesthetic and the second needle (320) of the second section (120);

the second section (120) is provided with a branch part (220) which can be used for injecting anesthetic, and the branch part (220) is arranged in a mode that an included angle α is formed between the injection direction of the injected anesthetic and the puncture direction of the second needle head (320).

2. The bone marrow extraction device for hematology department as set forth in claim 1, wherein the included angle α is a right angle or an obtuse angle.

3. Bone marrow extraction device for hematology according to claim 2, characterized in that the first section (110) is provided with a first chamber (410) for accommodating extracted bone marrow and a first piston rod (510) arranged in the first chamber (410), the sliding direction of the first piston rod (510) is in accordance with the puncturing direction of the second needle (320).

4. The bone marrow extraction device for hematology department according to claim 3, characterized in that the second section (120) further comprises a trunk portion (210) communicating with the branch portion (220), the second section (120) is detachably connected to the first section (110) through the trunk portion (210), and the first needle (310) is inserted into the cavity of the trunk portion (210) and the second needle (320).

5. The bone marrow extraction device for hematology as set forth in claim 4, wherein the detachable connection is at least one of a screw connection, a bayonet connection, and a flange connection.

6. The bone marrow extraction device for hematology department according to claim 5, characterized in that the main part (210) is provided with a second chamber (420) for containing anesthetic, the branch part (220) is provided with a third chamber (430) for containing anesthetic, the second chamber (420) and the third chamber (430) are communicated with each other, a second piston rod (520) is arranged in the third chamber (430), and the ejection direction of the second piston rod (520) and the puncture direction of the second needle (320) are arranged in a way of forming an included angle α.

7. Bone marrow extraction device for haematology according to claim 6, characterised in that one end of said second chamber (420) is an open end and that this open end is closed after connection of said second section (120) and said first section (110) in position, to form a second chamber (420) which can be used to contain at least part of an anaesthetic agent.

8. The bone marrow extraction device for hematology department according to claim 7, characterized in that the first needle (310) comprises a first flow passage (610) and a first needle hole (710) arranged at the end of the first flow passage (610), the second needle (320) comprises a second flow passage (620) and a second needle hole (720) and a third needle hole (730) communicated with the second flow passage (620),

wherein, after the second section (120) is connected to the first section (110), the first needle (310) is inserted into the third needle hole (730) and is tightly connected with the outer wall of the third needle hole (730) so as to isolate the first flow passage (610) and the second flow passage (620) from each other.

9. The bone marrow harvest device for the hematological department according to claim 8, wherein the first segment (110) and the branch part (220) are provided with a scale indicating the bone marrow harvest amount and a scale indicating the anesthetic injection amount, respectively.

10. Bone marrow extraction device for haematology according to claim 9, characterised in that the end of said first section (110) remote from the first needle (310) is provided with at least two wings (800) projecting outwards.