CN210185619U - Marrow liquid quantitative extraction device for hematology department - Google Patents

Abstract

The utility model discloses a marrow liquid ration draw-out device for blood internal medicine, including pressing handle, cylinder main part and pjncture needle, the below left and right sides of pressing the handle all is provided with the cylinder clamp plate, and the lower fixed surface of cylinder clamp plate has the limiting plate, the cylinder main part is connected in the intermediate position below of cylinder clamp plate, and the internally mounted of cylinder main part has the piston rod, the pjncture needle is installed in the outside of extraction needle. This bone marrow liquid ration draw-out device for blood internal medicine sets up the inside two annular archs that are provided with of cylinder main part, can carry out the block between the draw-in groove on arch and the piston rod, and the interval capacity between two archs just is 0.1ml, thereby realize that whole device can the ration draw bone marrow liquid, set up the extraction needle and install the inside at the pjncture needle, make the pjncture needle provide sufficient bone marrow liquid for the extraction needle and draw the space, the extraction needle of being convenient for once draws abundant bone marrow liquid, avoid appearing the operation of drawing bone marrow liquid many times, reduce the bodily injury to the patient.

Description

Marrow liquid quantitative extraction device for hematology department

Technical Field

The utility model relates to the technical field of medical equipment, specifically be marrow liquid ration draw-out device for blood internal medicine.

Background

In the blood medicine, when examining a patient, besides the blood extraction and test, the bone marrow fluid extraction and test are often needed, and the bone marrow aspiration is a common diagnostic technique for collecting the bone marrow fluid, and is commonly used for blood cell morphology examination in clinic, hematopoietic stem cell culture, cytogenetic analysis, pathogenic biology examination and the like to assist clinical diagnosis, observation of curative effect, prognosis judgment and the like.

The marrow liquid draw-out device on the existing market is mostly a marrow puncture needle, the capacity of the puncture needle is limited, only a small amount of marrow liquid can be extracted in one operation, great pain is easily brought to a patient by multiple times of extraction operation, the wound area can be increased, in addition, when the existing marrow liquid draw-out device is used for extracting the marrow liquid, a certain extraction amount is not convenient to master, the problem of difficulty is brought to clinical medicine research, and therefore, the marrow liquid quantitative draw-out device for the blood internal medicine is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a marrow liquid ration draw-out device for blood internal medicine to solve the marrow liquid draw-out device on the present market that proposes in the above-mentioned background art and mostly be the marrow pjncture needle, the capacity of pjncture needle is limited, a small amount of marrow liquid can only be drawed in one operation, it brings huge misery for the patient easily to draw the operation many times, and can increase the wound area, present marrow liquid draw-out device is when drawing marrow liquid in addition, be not convenient for master certain extraction volume, the problem of difficulty has been brought for clinical medicine research.

In order to achieve the above object, the utility model provides a following technical scheme: the marrow fluid quantitative extraction device for the hematology department comprises a pressing handle, a syringe main body and a puncture needle, syringe pressing plates are arranged on the left side and the right side below the pressing handle, and the lower surface of the needle cylinder pressure plate is fixed with a limiting plate, the needle cylinder main body is connected below the middle position of the needle cylinder pressure plate, and the inside of the syringe main body is provided with a piston rod, the inner surface of the syringe main body is fixed with a bulge, the lower end of the piston rod is provided with a piston block, the outside of the needle cylinder main body is connected with a fixed frame, a backing plate is arranged below the fixing frame, a spring is fixed at the lower end of the backing plate, a needle seat is arranged at the lower end of the needle cylinder main body, and the outer part of the needle base is connected with an outer cover, the lower end of the needle base is connected with an extraction needle, and the interior of the extraction needle is provided with a through hole, the puncture needle is arranged outside the extraction needle, and the outer surface of the piston rod is provided with a clamping groove.

Preferably, the structure of the limiting plate is an arc-shaped structure, and the limiting plate is fixedly connected with the needle cylinder pressing plate.

Preferably, the structure of the protrusion is an annular structure, and a clamping structure is formed between the protrusion and the clamping groove.

Preferably, an elastic structure is formed between the backing plate and the spring, the backing plate is vertically symmetrical relative to the spring, and the structure of the backing plate is an annular structure.

Preferably, the extraction needle penetrates through the puncture needle, and a concentric circle structure is formed between the cross section of the extraction needle and the cross section of the puncture needle.

Preferably, the through holes are uniformly distributed in the extraction needle, and the through holes form a communication structure with the needle cylinder main body through the extraction needle.

Preferably, a semi-surrounding structure is formed between the outer cover and the needle seat, and the outer cover and the needle seat are matched in size.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the bone marrow liquid quantitative extraction device for the hematology department is provided with a limiting plate arranged on the lower surface of a syringe pressing plate, the limiting plate is a section of arc-shaped plate, the lower end face of the syringe pressing plate can be in an arc shape, when a user holds the syringe pressing plate by hand, fingers of the user can be tightly buckled on the lower end face of the limiting plate, the user can conveniently hold the device, the whole device is not easy to slip when the user presses or pulls the device, two annular bulges are arranged in a syringe main body, the bulges can be clamped with clamping grooves on a piston rod, the spacing capacity between the two bulges is just 0.1ml, the extraction amount of the bone marrow liquid is usually 0.1-0.2ml, the whole device can quantitatively extract 0.1ml or 0.2ml of bone marrow liquid, and the bone marrow liquid with enough amount can be conveniently extracted according to the needs of clinical research;

2. the upper end and the lower end of the spring are connected with the base plate, the base plate is arranged below the fixing frame, when a user performs extraction operation in the syringe main body, the user can press hands on the base plate to slightly apply force, so that the situation that the hands holding the syringe main body are suspended in the air and shake of the syringe main body in the extraction process is avoided, the injury to the wound surface of a patient is increased, a plurality of through holes are formed in the bottom of the extraction needle, the through holes and the opening at the needle head of the extraction needle act simultaneously, the contact surface with the marrow liquid is increased, and the extraction efficiency of the marrow liquid is increased;

3. set up the extraction needle and install the inside at the pjncture needle for the pjncture needle provides sufficient marrow liquid for the extraction needle and draws the space, the extraction needle of being convenient for once draws sufficient marrow liquid, avoid appearing the operation of drawing marrow liquid many times, reduce the bodily injury to the patient, set up the dustcoat and overlap the outside at the needle file, and can fix on the needle file, conveniently will extract the needle cover and use in pjncture needle inside, also can be when not using the pjncture needle, with the pjncture needle with extract the needle split division, conveniently deposit.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the joint between the protrusion and the slot of the present invention;

fig. 3 is a schematic view of a part of an enlarged structure at a in fig. 1 according to the present invention.

In the figure: 1. a pressing handle; 2. a needle cylinder pressing plate; 3. a limiting plate; 4. a syringe body; 5. a piston rod; 6. a protrusion; 7. a piston block; 8. a fixed mount; 9. a base plate; 10. a spring; 11. a needle seat; 12. extracting the needle; 13. a through hole; 14. puncturing needle; 15. a card slot; 16. a housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the marrow liquid quantitative extraction device for the hematology department comprises a pressing handle 1, a needle cylinder pressing plate 2, a limiting plate 3, a needle cylindermain body 4, apiston rod 5, aprotrusion 6, apiston block 7, a fixing frame 8, abacking plate 9, aspring 10, aneedle seat 11, anextraction needle 12, a throughhole 13, apuncture needle 14, aclamping groove 15 and anouter cover 16, wherein the needle cylinder pressing plate 2 is arranged on the left side and the right side below the pressing handle 1, the limiting plate 3 is fixed on the lower surface of the needle cylinder pressing plate 2, the limiting plate 3 is of an arc-shaped structure, the connecting mode between the limiting plate 3 and the needle cylinder pressing plate 2 is fixed connection, the limiting plate 3 is arranged on the lower surface of the needle cylinder pressing plate 2, the limiting plate 3 is of a section of arc-shaped plate, when a user holds the needle cylinder pressing plate 2, the fingers of the user can be tightly buckled on the lower end surface of the limiting plate 3, the whole device is not easy to slip;

the syringemain body 4 is connected below the middle position of the syringe pressing plate 2, thepiston rod 5 is arranged inside the syringemain body 4, thebulge 6 is fixed on the inner surface of the syringemain body 4, thepiston block 7 is arranged at the lower end of thepiston rod 5, the fixing frame 8 is connected outside the syringemain body 4, thebacking plate 9 is arranged below the fixing frame 8, thespring 10 is fixed at the lower end of thebacking plate 9, an elastic structure is formed between thebacking plate 9 and thespring 10, thebacking plate 9 is vertically symmetrical relative to thespring 10, thebacking plate 9 is of an annular structure, thebacking plate 9 is connected with thespring 10 at the upper end and the lower end, and thebacking plate 9 is arranged below the fixing frame 8, when a user performs extraction operation inside the syringemain body 4, the hand can be pressed on thebacking plate 9, the force is slightly applied, the situation that the hand holding the syringemain body 4 is suspended, thereby increasing the injury to the wound surface of a patient, the lower end of the syringemain body 4 is provided with theneedle seat 11, the outer part of theneedle seat 11 is connected with theouter cover 16, the lower end of theneedle seat 11 is connected with theextraction needle 12, the inside of theextraction needle 12 is provided with the throughholes 13, the throughholes 13 are uniformly distributed in theextraction needle 12, the throughholes 13 form a communication structure with the syringemain body 4 through theextraction needle 12, the bottom of theextraction needle 12 is provided with a plurality of throughholes 13, the throughholes 13 and the opening at the needle head of theextraction needle 12 act simultaneously, the contact surface with the marrow fluid is increased, and the extraction efficiency of the marrow fluid is increased;

thepuncture needle 14 is arranged outside theextraction needle 12, theextraction needle 12 penetrates inside thepuncture needle 14, a concentric circle structure is formed between the cross section of theextraction needle 12 and the cross section of thepuncture needle 14, theextraction needle 12 is arranged inside thepuncture needle 14, so that thepuncture needle 14 provides enough marrow fluid extraction space for theextraction needle 12, theextraction needle 12 can conveniently extract enough marrow fluid at one time, the operation of extracting marrow fluid for multiple times is avoided, the physical injury to a patient is reduced, a semi-surrounding structure is formed between theouter cover 16 and theneedle base 11, the size between theouter cover 16 and theneedle base 11 is identical, theouter cover 16 is arranged outside theneedle base 11 and can be fixed on theneedle base 11, theextraction needle 12 is conveniently sleeved inside thepuncture needle 14 for use, thepuncture needle 14 and theextraction needle 12 can be detached when thepuncture needle 14 is not used, the storage is convenient, theclamping groove 15 is arranged on the outer surface of thepiston rod 5, the structure of thebulge 6 is an annular structure, a clamping structure is formed between thebulge 6 and theclamping groove 15, twoannular bulges 6 are arranged in the syringemain body 4, thebulge 6 and theclamping groove 15 on thepiston rod 5 can be clamped, the spacing capacity between the twobulges 6 is just 0.1ml, and the extraction amount of the marrow liquid is usually 0.1-0.2ml, so that the whole device can quantitatively extract 0.1ml or 0.2ml of the marrow liquid, and the sufficient marrow liquid can be conveniently extracted according to the requirement of clinical research.

The working principle is as follows: for the marrow fluid quantitative extraction device for the blood medicine, thepuncture needle 14 and theextraction needle 12 are separately arranged in a normal state, when the marrow fluid of a patient needs to be extracted, firstly, the fixing frame 8 and theouter cover 16 are held by hands, thepuncture needle 14 is taken out, thepuncture needle 14 is punctured into the bone of the patient, then, thebacking plate 9 on one side is sleeved at the lower end of the fixing frame 8, the fixing frame 8 is tightly attached to thebacking plate 9, thebacking plate 9 on the other side is placed on the body of the patient for supporting, then, the syringe pressing plate 2 is held by hands, fingers are buckled on the limiting plate 3, the pressing handle 1 is pressed downwards, the pressing handle 1 drives thepiston rod 5 to move downwards, thepiston rod 5 drives thepiston block 7 to rub in the syringemain body 4, all air in the syringemain body 4 is discharged, thepuncture needle 14 is sleeved into theextraction needle 12 from theouter cover 16, and theextraction needle 12 is punctured into, and theneedle base 11 is buckled inside theouter cover 16, theextraction needle 12 is kept stable and still, the fingertip of one hand clamps the syringemain body 4, the back of the hand is propped against thebacking plate 9, thepiston rod 5 is clamped by the other hand, the pressing handle 1 is buckled inwards, thepiston rod 5 is pulled upwards, thepiston block 7 slides in the syringemain body 4 in a friction manner, the patient's bone marrow liquid is sucked into theextraction needle 12 from the throughhole 13 due to the difference of the internal pressure and the external pressure of the syringemain body 4 and then enters the syringemain body 4, thebulge 6 is made of elastic silica gel material, thepiston rod 5 is continuously pulled in a compression state between thepiston rod 5 and the inner wall of the syringemain body 4, theclamping groove 15 is opposite to thebulge 6 close to theneedle base 11, thebulge 6 is rebounded and clamped into theclamping groove 15, so that thepiston block 7 stops, so that the extraction of 0.1ml of bone marrow liquid is finished, if 0, make thearch 6 card of keeping away fromneedle file 11 go into draw-ingroove 15 inside can, whole in-process probably causes the extrusion to backingplate 9 forspring 10 takes place slight deformation, carries out the shock attenuation, maintains the stability of extraction action, accomplishes the use of whole marrow liquid ration draw-out device for blood internal medicine just so.

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 (7)

1. Bone marrow liquid ration draw-out device for hematology dept is including pressing handle (1), syringe main part (4) and pjncture needle (14), its characterized in that: the left side and the right side of the lower portion of the pressing handle (1) are respectively provided with a needle cylinder pressing plate (2), a limiting plate (3) is fixed on the lower surface of the needle cylinder pressing plate (2), the needle cylinder main body (4) is connected to the lower portion of the middle position of the needle cylinder pressing plate (2), a piston rod (5) is installed inside the needle cylinder main body (4), a bulge (6) is fixed on the inner surface of the needle cylinder main body (4), a piston block (7) is installed at the lower end of the piston rod (5), a fixing frame (8) is connected to the outer portion of the needle cylinder main body (4), a backing plate (9) is arranged below the fixing frame (8), a spring (10) is fixed at the lower end of the backing plate (9), a needle seat (11) is installed at the lower end of the needle cylinder main body (4), an outer cover (16) is connected to the outer, and a through hole (13) is arranged in the extraction needle (12), the puncture needle (14) is arranged outside the extraction needle (12), and a clamping groove (15) is arranged on the outer surface of the piston rod (5).

2. The quantitative bone marrow fluid extraction device for hematology department according to claim 1, characterized in that: the limiting plate (3) is of an arc-shaped structure, and the limiting plate (3) is fixedly connected with the needle cylinder pressing plate (2).

3. The quantitative bone marrow fluid extraction device for hematology department according to claim 1, characterized in that: the structure of the bulge (6) is an annular structure, and a clamping structure is formed between the bulge (6) and the clamping groove (15).

4. The quantitative bone marrow fluid extraction device for hematology department according to claim 1, characterized in that: an elastic structure is formed between the backing plate (9) and the spring (10), the backing plate (9) is vertically symmetrical relative to the spring (10), and the structure of the backing plate (9) is an annular structure.

5. The quantitative bone marrow fluid extraction device for hematology department according to claim 1, characterized in that: the extraction needle (12) penetrates through the interior of the puncture needle (14), and a concentric circle structure is formed between the cross section of the extraction needle (12) and the cross section of the puncture needle (14).

6. The quantitative bone marrow fluid extraction device for hematology department according to claim 1, characterized in that: the through holes (13) are uniformly distributed in the extraction needle (12), and the through holes (13) form a communication structure with the needle cylinder main body (4) through the extraction needle (12).

7. The quantitative bone marrow fluid extraction device for hematology department according to claim 1, characterized in that: a semi-surrounding structure is formed between the outer cover (16) and the needle seat (11), and the size of the outer cover (16) is matched with that of the needle seat (11).

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