Bone marrow collecting device capable of achieving quantitative suction

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a bone marrow collection device capable of quantitatively sucking, which comprises a storage bin, a suction tube, a suction tube, a suction tube, a suction tube and a suction tube, and is characterized in that the storage bin takes the shape of a hollow cylindrical shell and is used for storing collected bone marrow; the needle head and the storage bin are coaxially arranged, and the end, away from the needle tip, of the needle head extends into the storage cavity; the piston is slidably connected into the storage bin, the peripheral wall of the piston is tightly attached to the inner wall of the storage bin, a pair of push rods is fixed to the end, away from the needle head, of the piston, the other ends of the push rods penetrate through the storage bin and are slidably connected with the storage bin, and the ends, away from the piston, of the push rods are fixed to the push plate; the distance between the pull-back push plate, the push rod and the piston during bone marrow extraction is controlled by controlling and adjusting the distance between the pressing plate and the storage bin, then the amount of the extracted bone marrow is controlled, the purpose of quantitatively collecting the bone marrow is achieved, and the quantitative collection amount can be adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical instruments, and in particular relates to a bone marrow collection device capable of quantitative aspiration. Background Art

[0002] Bone marrow exists in the spongy bone cavities and the medullary cavities of long bones. It is composed of various types of cells and reticular connective tissue. It is divided into red bone marrow and yellow bone marrow according to its different structures. It is a soft tissue rich in blood. In some cases, doctors may recommend bone marrow puncture and bone marrow examination to help diagnose and treat certain diseases and conditions. Most of the existing technologies insert an extraction needle into the bone marrow cavity, use a syringe-like principle, pull the piston rod to drive the piston, so that negative pressure is formed in the extraction cylinder, and the bone marrow is extracted into the extraction cylinder. However, most of the inspections and tests require the extraction of a certain amount of bone marrow fluid according to actual needs. It is not convenient to accurately control the amount of pullback of the piston rod when manually pulling the piston rod, and there is a problem of inconvenience in quantitative collection of bone marrow according to actual needs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a bone marrow collection device capable of quantitative aspiration, which solves the problem in the prior art that it is inconvenient to quantitatively collect bone marrow according to actual needs.

[0004] The purpose of this disclosure can be achieved through the following technical solutions:

[0005] A bone marrow collection device capable of quantitative aspiration, comprising:

[0006] A storage bin, which is in the shape of a hollow cylindrical shell and is used to store the collected bone marrow;

[0007] The needle is coaxially placed with the storage chamber, and the end of the needle away from the needle tip extends into the storage chamber;

[0008] The piston is slidably connected to the storage bin, and the peripheral wall of the piston is tightly fitted with the inner wall of the storage bin. A pair of push rods are fixed to the end of the piston away from the needle, and the other ends of the push rods pass through the storage bin and are slidably connected thereto. The ends of the push rods away from the piston are fixed to the push plate;

[0009] The screw is rotatably connected to one end of the storage bin away from the needle, the screw and the storage bin are coaxially arranged, a threaded pressure plate is sleeved on the screw, and the pressure plate is located on the side of the push plate away from the storage bin.

[0010] The principle and effect of the above technical solution are as follows:

[0011] By rotating the screw rod and limiting the pressing plate to prevent it from rotating, the pressing plate is threadedly driven as the screw rod rotates. By controlling and adjusting the distance between the pressing plate and the storage bin, the distance of the push plate, the push rod and the piston when the bone marrow is extracted is controlled, thereby controlling the amount of bone marrow extracted, thereby achieving the purpose of quantitatively collecting bone marrow, and the size of the quantitative collection amount is adjustable.

[0012] A locking bin is fixedly installed at one end of the storage bin close to the needle, and the needle is detachably connected to the locking bin;

[0013] The push plate is provided with a circular through hole coaxially arranged with the screw, and the diameter of the circular through hole is larger than the diameter of the screw;

[0014] A shell cylinder is fixed on the outer peripheral wall of the storage bin and is placed coaxially. The inner diameter of the shell cylinder is larger than the outer diameter of the storage bin. A sliding rod is fixed in the shell cylinder and is coaxially placed with the screw rod. The sliding rod is located outside the storage bin and passes through the pressure plate and is slidably connected with the pressure plate.

[0015] The screw is located inside the shell barrel, and a rotating shaft placed coaxially is fixed to the end of the screw away from the storage bin. The rotating shaft passes through the shell barrel and is rotatably connected thereto, and a turning handle is fixed to the other end of the rotating shaft;

[0016] The wall of the handlebar is provided with evenly distributed anti-slip grooves;

[0017] A pair of symmetrically placed strip grooves are opened on the peripheral wall of the shell cylinder, and ear plates are fixed at both ends of the push plate. The ear plates correspond to the strip grooves one by one, and the ear plates are slidably connected with the corresponding strip grooves. The ends of the ear plates away from the push plate are bent away from the storage bin end.

[0018] The slide bars are all sleeved with springs, which are all located on the side of the push plate close to the storage bin, and both ends of the springs are respectively fixed to the push plate and the shell tube, so that the springs are always in a compressed state.

[0019] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0020] Connection: refers to the process of connecting two separate profiles or parts into a complex part or component using fasteners such as screws, bolts and rivets.

[0021] Sliding connection: Two objects are in contact but not fixed and can slide relative to each other.

[0022] Beneficial effects of the present disclosure:

[0023] 1. By rotating the screw rod, the pressing plate is limited to prevent it from rotating, so that the pressing plate is threadedly driven with the rotation of the screw rod. By controlling and adjusting the distance between the pressing plate and the storage bin, the distance between the push plate, the push rod and the piston is controlled when extracting the bone marrow, thereby controlling the amount of bone marrow extracted, achieving the purpose of quantitative collection of bone marrow, and the size of the quantitative collection amount is adjustable;

[0024] 2. Through the coordinated arrangement of the shell, slide rod, ear plate, slide groove and spring, when collecting bone marrow, the user releases the squeeze limit on the ear, and the spring automatically pushes the push plate to drive the push rod and the piston to move away from the needle end, thereby realizing automatic extraction of bone marrow. This can avoid the shaking of the needle caused by manual pulling of the push plate to prevent secondary injury to the patient. At the same time, through the coordination of the spring, push plate, screw and pressure plate, the purpose of quantitative discharge of bone marrow fluid in the storage bin can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present disclosure;

[0027] Figure 2 is a schematic diagram of the internal structure of the shell cylinder according to an embodiment of the present disclosure;

[0028] Figure 3 It is a partial structural schematic diagram of the screw rod of an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0030] Combined with this Figures 1 to 3The embodiment of a bone marrow collection device capable of quantitative aspiration is described below. Specifically, the bone marrow collection device capable of quantitative aspiration is constructed as a split structure, which has seven components, namely, a storage bin 1, a needle 2, a piston 3, a push rod 4, a push plate 5, a screw 6 and a pressing plate 7. By rotating the screw 6 and limiting the pressing plate 7 to prevent it from rotating, the pressing plate 7 is threadedly driven as the screw 6 rotates. By controlling and adjusting the distance between the pressing plate 7 and the storage bin 1, the distance of the push plate 5, the push rod 4 and the piston 3 when the bone marrow is extracted is controlled, thereby controlling the amount of bone marrow extracted, thereby achieving the purpose of quantitatively collecting bone marrow, and the amount of quantitative collection is adjustable.

[0031] Please refer to Figures 1 to 3 , a bone marrow collection device capable of quantitative aspiration, comprising:

[0032] Storage bin 1, which is in the shape of a hollow cylindrical shell and is used to store the collected bone marrow;

[0033] The needle 2 is coaxially arranged with the storage chamber 1, and the end of the needle 2 away from the needle tip extends into the storage chamber;

[0034] The piston 3 is slidably connected to the storage bin 1, and the peripheral wall of the piston 3 is tightly fitted with the inner wall of the storage bin 1. A pair of push rods 4 are fixed to the end of the piston 3 away from the needle 2. The other ends of the push rods 4 pass through the storage bin 1 and are slidably connected thereto. The ends of the push rods 4 away from the piston 3 are fixed to the push plates 5.

[0035] The screw rod 6 is rotatably connected to the end of the storage bin 1 away from the needle 2, the screw rod 6 and the storage bin 1 are coaxially arranged, and a threaded pressing plate 7 is sleeved on the screw rod 6, and the pressing plate 7 is located on the side of the push plate 5 away from the storage bin 1;

[0036] The storage bin 1 is used to store the collected bone marrow. The storage bin 1 must have good sterility to prevent contamination by bacteria or other microorganisms. At the same time, the storage bin 1 is preferably made of transparent or translucent materials to facilitate monitoring of the condition of the bone marrow in the storage bin.

[0037] The needle 2 is used to be inserted into the bone marrow cavity to extract bone marrow. A cavity or a channel is provided inside the needle 2 to facilitate extraction of the bone marrow sample and ensure that the sample is not contaminated. The needle 2 can be a detachable disposable sterile needle 2.

[0038] The screw 6 is used to connect the pressing plate 7, and the pressing plate 7 is driven by the rotation of the screw 6 to perform thread transmission. The screw 6 can be made of metal materials such as alloy steel, stainless steel and aluminum alloy, among which aluminum alloy material is preferred because of its low density, high strength and low price.

[0039] Before collecting bone marrow, the push plate 5 is pushed manually, and the push rod 4 and the piston 3 are driven to move the piston 3 to the end of the storage bin 1 close to the needle 2; then, the screw 6 is rotated and the pressing plate 7 is limited to prevent it from rotating, so that the pressing plate 7 rotates with the screw 6 for threaded transmission. By controlling and adjusting the distance between the pressing plate 7 and the storage bin 1, the distance of the push plate 5, the push rod 4 and the piston 3 when extracting bone marrow is controlled, and then the amount of bone marrow extracted is controlled, so as to achieve the purpose of quantitative bone marrow collection, and the size of the quantitative collection amount can be adjusted.

[0040] A locking bin 8 is fixedly mounted on one end of the storage bin 1 close to the needle 2 , and the needle 2 is detachably connected to the locking bin 8 .

[0041] The push plate 5 is provided with a circular through hole coaxially arranged with the screw rod 6 , and the diameter of the circular through hole is larger than the diameter of the screw rod 6 .

[0042] A shell cylinder 9 is fixed on the outer peripheral wall of the storage bin 1 and is placed coaxially. The inner diameter of the shell cylinder 9 is larger than the outer diameter of the storage bin 1. A sliding rod 10 is fixed inside the shell cylinder 9 and is placed coaxially with the screw rod 6. The sliding rod 10 is located outside the storage bin 1, and the sliding rods 10 all pass through the pressure plate 7 and are slidably connected thereto.

[0043] The screw rod 6 is located inside the shell barrel 9. A rotating shaft placed coaxially is fixed to the end of the screw rod 6 away from the storage bin 1. The rotating shaft passes through the shell barrel 9 and is rotatably connected thereto. A turning handle 11 is fixed to the other end of the rotating shaft.

[0044] The peripheral wall of the turning handle 11 is provided with evenly distributed anti-skid grooves.

[0045] A pair of symmetrically placed strip grooves 91 are opened on the peripheral wall of the shell cylinder 9, and ear plates 12 are fixed at both ends of the push plate 5. The ear plates 12 correspond to the strip grooves 91 one by one, and the ear plates 12 are slidably connected to the corresponding strip grooves 91. The ends of the ear plates 12 away from the push plate 5 are bent away from the storage bin 1.

[0046] The slide bars 10 are sleeved with springs 13 , which are located on the side of the push plate 5 close to the storage bin 1 , and both ends of the springs 13 are fixed to the push plate 5 and the shell tube 9 , respectively, so that the springs 13 are always in a compressed state.

[0047] The following is a further description of a bone marrow collection device capable of quantitative aspiration provided by the present invention in conjunction with the accompanying drawings and implementation examples.

[0048] A bone marrow collection device capable of quantitative aspiration, comprising:

[0049] Storage bin 1, which is in the shape of a hollow cylindrical shell and is used to store the collected bone marrow;

[0050] The needle 2 is coaxially arranged with the storage chamber 1, and the end of the needle 2 away from the needle tip extends into the storage chamber;

[0051] The piston 3 is slidably connected to the storage bin 1, and the peripheral wall of the piston 3 is tightly fitted with the inner wall of the storage bin 1. A pair of push rods 4 are fixed to the end of the piston 3 away from the needle 2. The other ends of the push rods 4 pass through the storage bin 1 and are slidably connected thereto. The ends of the push rods 4 away from the piston 3 are fixed to the push plates 5.

[0052] The screw rod 6 is rotatably connected to the end of the storage bin 1 away from the needle 2, the screw rod 6 and the storage bin 1 are coaxially arranged, and a threaded pressing plate 7 is sleeved on the screw rod 6, and the pressing plate 7 is located on the side of the push plate 5 away from the storage bin 1;

[0053] Before collecting bone marrow, the push plate 5 is pushed manually, and the push rod 4 and the piston 3 are driven to move the piston 3 to the end of the storage bin 1 close to the needle 2; then, the screw 6 is rotated and the pressing plate 7 is limited to prevent it from rotating, so that the pressing plate 7 rotates with the screw 6 for threaded transmission. By controlling and adjusting the distance between the pressing plate 7 and the storage bin 1, the distance of the push plate 5, the push rod 4 and the piston 3 when extracting bone marrow is controlled, thereby controlling the amount of bone marrow extracted, and achieving the purpose of quantitative bone marrow collection.

[0054] A locking bin 8 is fixedly mounted on one end of the storage bin 1 close to the needle 2, and the needle 2 is detachably connected to the locking bin 8; the needle 2 is locked by the locking bin 8 to prevent the needle 2 from accidentally loosening or falling off.

[0055] The push plate 5 is provided with a round through hole coaxially arranged with the screw rod 6 , and the diameter of the round through hole is larger than the diameter of the screw rod 6 , so as to avoid the screw rod 6 interfering with the movement of the push plate 5 .

[0056] In order to improve the guiding property of the pressure plate 7 during its movement and prevent the pressure plate 7 from rotating synchronously with the screw 6 when the screw 6 rotates, a shell cylinder 9 placed coaxially is fixed on the outer peripheral wall of the storage bin 1. The inner diameter of the shell cylinder 9 is larger than the outer diameter of the storage bin 1. A sliding rod 10 placed coaxially with the screw 6 is fixed in the shell cylinder 9. The sliding rod 10 is located on the outside of the storage bin 1. The sliding rods 10 all pass through the pressure plate 7 and are slidably connected thereto. The two sliding rods 10 are used to limit the pressure plate 7, thereby improving the guiding property of the pressure plate 7 during its movement, so that it can rotate with the screw 6 for threaded transmission.

[0057] In order to facilitate the rotation of the screw 6, the screw 6 is located inside the shell barrel 9, and a coaxially placed rotating shaft is fixed to the end of the screw 6 away from the storage bin 1. The rotating shaft passes through the shell barrel 9 and is rotatably connected thereto, and a turning handle 11 is fixed to the other end of the rotating shaft; by rotating the turning handle 11, the turning handle 11 drives the rotating shaft and the screw 6, thereby achieving the purpose of facilitating the rotation of the screw 6.

[0058] The peripheral wall of the turning handle 11 is provided with evenly distributed anti-skid grooves; the provision of the anti-skid grooves can reduce the occurrence of slipping when the turning handle 11 is turned.

[0059] In order to facilitate pushing the push plate 5, a pair of symmetrically placed strip grooves 91 are opened on the peripheral wall of the shell tube 9, and ear plates 12 are fixed at both ends of the push plate 5. The ear plates 12 correspond to the strip grooves 91 one by one, and the ear plates 12 are slidably connected to the corresponding strip grooves 91. The ends of the ear plates 12 away from the push plate 5 are bent away from the storage bin 1. The user can press on the two ear plates 12 with two fingers and push the ear plates 12, so that the push plate 5 is driven to move through the ear plates 12.

[0060] In order to facilitate automatic extraction of bone marrow, a spring 13 is sleeved on the slide bar 10. The spring 13 is located on the side of the push plate 5 close to the storage bin 1. Both ends of the spring 13 are fixed to the push plate 5 and the shell tube 9 respectively, and the spring 13 is always in a compressed state; before the needle 2 is inserted into the human body, the ear plate 12 is pushed to drive the push plate 5, the push rod 4, and the piston 3, so that the piston 3 moves to one end close to the needle 2, and then the needle 2 is inserted into the human body. After the needle 2 is drawn into place, the fingers squeeze the ear plate 12, and the spring 13 pushes the push plate 5 away from the storage bin 1 under the elastic force of the spring 13 to extract the bone marrow. When extracting, there is no need to manually pull the push plate 5 manually. The user can always keep a grip on the device, which can avoid the shaking of the needle 2 caused by manually pulling the push plate 5 to move; it is convenient for one-handed operation, and it can also reduce the secondary damage to the patient during the collection process.

[0061] Preferably, when discharging the bone marrow in the storage bin 1, the handle 11 can be rotated to drive the rotating shaft and the screw 6 in sequence, the screw 6 drives the pressure plate 7, the pressure plate 7 pushes the push plate 5, the push rod 4 and the piston 3, and cooperates with the elastic force of the spring 13 to achieve quantitative discharge of the bone marrow fluid in the storage bin 1.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure may have various changes and improvements, and these changes and improvements fall within the scope of the present disclosure to be protected.

Claims

1. A bone marrow collection device capable of quantitative aspiration, characterized in that: include: A storage bin (1), the storage bin (1) is in the shape of a hollow cylindrical shell, and the storage bin (1) is used to store the collected bone marrow; A needle (2), the needle (2) and the storage chamber (1) are coaxially arranged, and an end of the needle (2) away from the needle tip extends into the storage chamber; A piston (3), the piston (3) is slidably connected to the interior of the storage bin (1), and the peripheral wall of the piston (3) is tightly fitted to the inner wall of the storage bin (1), a pair of push rods (4) are fixed to the end of the piston (3) away from the needle (2), the other ends of the push rods (4) pass through the storage bin (1) and are slidably connected thereto, and the ends of the push rods (4) away from the piston (3) are fixed to the push plates (5); The screw rod (6) is rotatably connected to one end of the storage bin (1) away from the needle head (2), the screw rod (6) and the storage bin (1) are coaxially arranged, a threaded pressure plate (7) is sleeved on the screw rod (6), and the pressure plate (7) is located on the side of the push plate (5) away from the storage bin (1).

2. A bone marrow collection device capable of quantitative aspiration according to claim 1, characterized in that: A locking bin (8) is fixedly mounted on one end of the storage bin (1) close to the needle (2), and the needle (2) is detachably connected to the locking bin (8).

3. A bone marrow collection device capable of quantitative aspiration according to claim 2, characterized in that: The push plate (5) is provided with a circular through hole coaxially arranged with the screw rod (6), and the diameter of the circular through hole is larger than the diameter of the screw rod (6).

4. A bone marrow collection device capable of quantitative aspiration according to claim 3, characterized in that: A shell cylinder (9) is fixed on the outer peripheral wall of the storage bin (1) and is arranged coaxially. The inner diameter of the shell cylinder (9) is larger than the outer diameter of the storage bin (1). A sliding rod (10) is fixed in the shell cylinder (9) and is arranged coaxially with the screw rod (6). The sliding rod (10) is located on the outer side of the storage bin (1). The sliding rod (10) passes through the pressure plate (7) and is slidably connected thereto.

5. A bone marrow collection device capable of quantitative aspiration according to claim 4, characterized in that: The screw rod (6) is located inside the shell barrel (9). A rotating shaft placed coaxially is fixed to the end of the screw rod (6) away from the storage bin (1). The rotating shaft passes through the shell barrel (9) and is rotatably connected thereto. A turning handle (11) is fixed to the other end of the rotating shaft.

6. A bone marrow collection device capable of quantitative aspiration according to claim 5, characterized in that: The peripheral wall of the turning handle (11) is provided with evenly distributed anti-skid grooves.

7. A bone marrow collection device capable of quantitative aspiration according to claim 6, characterized in that: A pair of symmetrically placed strip grooves (91) are provided on the peripheral wall of the shell cylinder (9), and ear plates (12) are fixed at both ends of the push plate (5). The ear plates (12) correspond to the strip grooves (91) one by one, and the ear plates (12) are slidably connected to the corresponding strip grooves (91), and the ends of the ear plates (12) away from the push plate (5) are bent toward the end away from the storage bin (1).

8. A bone marrow collection device capable of quantitative aspiration according to claim 7, characterized in that: The slide bars (10) are sleeved with springs (13), which are located on the side of the push plate (5) close to the storage bin (1). Both ends of the springs (13) are respectively fixed to the push plate (5) and the shell cylinder (9), and the springs (13) are always in a compressed state.

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