阅读说明：本技术 一种造血干细胞的采集装置 (Hematopoietic stem cell collecting device ) 是由 牟瑞龙 于 2019-10-10 设计创作，主要内容包括：本发明公开了一种造血干细胞的采集装置,包括针芯、敲击座、针体,所述针芯的外侧活动套设有针外筒,针外筒的底部与针芯之间活动连接有第一密封圈,针外筒的内侧通过若干个轴承轴接有两根转轴,转轴的中心固定连接有轮子,轮子的外侧固定连接有若干个环形排列的棘齿,轮子的两端分别连接有胶轮,胶轮的外侧与针芯互相接触,针外筒上还活动插设有两个第三套管,第三套管的外侧固定连接有半球体,半球体位于针外筒的外侧,第三套管的外侧套设有挡块,挡块与针外筒的内壁之间连接有第二弹簧,第三套管的内部通过第三弹簧活动插设有插杆,插杆的外侧固定连接有楔形块,本发明能够改进现有技术的不足,具有更好的减震效果。(The invention discloses a hematopoietic stem cell collecting device, which comprises a needle core, a knocking seat and a needle body, wherein the outer side of the needle core is movably sleeved with an outer needle cylinder, a first sealing ring is movably connected between the bottom of the outer needle cylinder and the needle core, the inner side of the outer needle cylinder is connected with two rotating shafts through a plurality of bearings, the center of each rotating shaft is fixedly connected with a wheel, the outer side of each wheel is fixedly connected with a plurality of ratchets which are arranged in an annular mode, two ends of each wheel are respectively connected with a rubber wheel, the outer side of each rubber wheel is mutually contacted with the needle core, two third sleeves are movably inserted on the outer needle cylinder, the outer sides of the third sleeves are fixedly connected with hemispheres, the hemispheres are positioned on the outer side of the outer needle cylinder, the outer sides of the third sleeves are sleeved with stop blocks, second springs are connected between the stop blocks and the inner wall of the outer needle cylinder, insertion rods are, the invention can improve the defects of the prior art and has better shock absorption effect.)

1. The utility model provides a collection system of hemopoietic stem cell, includes nook closing member (2), nook closing member (2) top fixedly connected with strikes seat (1), nook closing member (2) bottom fixedly connected with needle body (11), its characterized in that: the outer side of the needle core (2) is movably sleeved with a needle outer cylinder (3), a first sealing ring (12) is movably connected between the bottom of the needle outer cylinder (3) and the needle core (2), the inner side of the needle outer cylinder (3) is connected with two rotating shafts (19) through a plurality of bearings (18), the two rotating shafts (19) are parallel to each other and are mutually symmetrical by taking the axis of the needle outer cylinder (3) as the center, the center of the rotating shafts (19) is fixedly connected with a wheel (20), the outer side of the wheel (20) is fixedly connected with a plurality of ratchets (21) which are annularly arranged, two ends of the wheel (20) are respectively connected with a rubber wheel (16), the outer side of the rubber wheel (16) is mutually contacted with the needle core (2), two third sleeve pipes (28) which are mutually symmetrical are movably inserted on the needle outer cylinder (3), the outer side of each third sleeve pipe (28) is fixedly connected with a hemispheroid (24), and the, the outside cover of third sleeve pipe (28) is equipped with dog (22), is connected with second spring (23) between the inner wall of dog (22) and needle urceolus (3), and the inside of third sleeve pipe (28) is equipped with inserted bar (26) through third spring (25) activity is inserted, and the outside fixedly connected with wedge (27) of inserted bar (26), wedge (27) and ratchet (21) selective contact.

2. The hematopoietic stem cell collection device according to claim 1, wherein: the outer side of the needle outer cylinder (3) is movably sleeved with a first sleeve (7), the top of the first sleeve (7) is fixedly connected with a ferrule (6), a gap (15) is formed in the inner side of the ferrule (6), and a hemisphere (24) is selectively located in the gap.

3. The hematopoietic stem cell collection device according to claim 2, wherein: the outer side of the needle outer cylinder (3) is fixedly sleeved with a fixing ring (4), and a first spring (5) is connected between the fixing ring (4) and the ferrule (6).

4. The hematopoietic stem cell collection device according to claim 2, wherein: the outside of rubber tyer (16) is seted up cambered surface shape's recess (29), and the outside and nook closing member (2) interference fit of recess (29), wheel (20) and nook closing member (2) clearance fit.

5. The hematopoietic stem cell collection device according to claim 4, wherein: the surface of recess (29) is provided with a plurality of bead (30) that are parallel to each other, and the contained angle between the axis of bead (30) and nook closing member (2) is 15, is connected with a plurality of strengthening rib (31) between adjacent bead (30).

6. The hematopoietic stem cell collection device according to claim 5, wherein: an air bag (32) is arranged in the rib (30), and a bracket (33) is connected between the air bag (32) and the top surface of the rib (30).

Technical Field

The invention relates to a medical apparatus, in particular to a hematopoietic stem cell collecting device.

Background

Hematopoietic stem cells are a group of primitive pluripotent stem cells existing in hematopoietic tissues, and can be differentiated into various blood cells, and also into neurons, oligodendrocytes, astrocytes, skeletal muscle cells, cardiac muscle cells, liver cells, and the like, and are one of the most important cells in the human body. Hematopoietic stem cell transplantation refers to the intravenous infusion of normal human hematopoietic stem cells into patients to reestablish the hematopoietic function and immune function of the patients, so as to achieve the purpose of treating certain diseases. There are three major sources of hematopoietic stem cells: bone marrow hematopoietic stem cells, peripheral hematopoietic stem cells, and cord blood hematopoietic stem cells. The existing hematopoietic stem cell collection mode adopts a flow type hemocyte separator to collect peripheral blood hematopoietic stem cells, but the device has high price, large volume and difficult popularization. Chinese utility model patent CN 206607233U discloses a hematopoietic stem cell collecting device. When the collecting device with the structure is operated, the vibration generated during knocking is weakened through the shock absorption pad, the bump and the rubber ring, but the shock absorption mode is general, and the pain of a collected person is caused by the fact that the needle head still possibly rebounds due to elasticity after knocking, so that the application range of the collecting device is limited.

Disclosure of Invention

The invention aims to provide a hematopoietic stem cell collecting device, which can solve the defects of the prior art and has better shock absorption effect.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows.

A hematopoietic stem cell collecting device comprises a needle core, wherein the top of the needle core is fixedly connected with a knocking seat, the bottom of the needle core is fixedly connected with a needle body, the outer side of the needle core is movably sleeved with a needle outer cylinder, a first sealing ring is movably connected between the bottom of the needle outer cylinder and the needle core, the inner side of the needle outer cylinder is connected with two rotating shafts through a plurality of bearings in a shaft coupling mode, the two rotating shafts are parallel to each other and mutually symmetrical by taking the axis of the needle outer cylinder as the center, the center of the rotating shafts is fixedly connected with a wheel, the outer side of the wheel is fixedly connected with a plurality of ratchets which are arranged in an annular mode, two ends of the wheel are respectively connected with rubber wheels, the outer side of each rubber wheel is mutually contacted with the needle core, two third sleeve pipes which are mutually symmetrical to each other are also movably inserted on the needle outer cylinder, the outer side of each third sleeve pipe is, an inserting rod is movably inserted in the third sleeve through a third spring, a wedge block is fixedly connected to the outer side of the inserting rod, and the wedge block is selectively contacted with the ratchet.

Preferably, the first sleeve is movably sleeved on the outer side of the needle outer cylinder, the top of the first sleeve is fixedly connected with a ferrule, a gap is formed in the inner side of the ferrule, and the hemisphere is selectively located in the gap.

Preferably, the outer side of the needle outer cylinder is fixedly sleeved with a fixing ring, and a first spring is connected between the fixing ring and the ferrule.

Preferably, the outer side of the rubber wheel is provided with an arc-shaped concave part, the outer side of the concave part is in interference fit with the needle core, and the wheel is in clearance fit with the needle core.

Preferably, the surface of the concave part is provided with a plurality of mutually parallel convex ribs, the included angle between each convex rib and the axis of the needle core is 15 degrees, and a plurality of reinforcing ribs are connected between adjacent convex ribs.

Preferably, the air bag is arranged in the rib, and the bracket is connected between the air bag and the top surface of the rib.

Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the invention relates to a device for collecting hematopoietic stem cells, which has a collecting mode consistent with the collecting mode of the prior art, wherein a needle body is arranged at a puncture part to beat a knocking seat to insert a needle so as to enable the needle core to move downwards during the extraction by puncturing and extracting bone substances with intensive hematopoietic stem cells such as sternum or ilium, a needle outer cylinder, a rubber wheel and a first sealing ring thereof are used for limiting the needle core and ensuring the precision and the stability of the needle insertion, a bearing and a rotating shaft are used for supporting and fixing a wheel which is used for supporting two rubber wheels which can clamp the needle core from the upper part and rotate along with the ascending and descending of the needle core, and furthermore, a second spring and a stop block can enable the hemispheroids to be kept in a state of always being positioned outside the needle outer cylinder, when in use, the two hemispheroids are pressed into the needle outer cylinder so that an insertion rod and a wedge block movably inserted on a third sleeve are mutually contacted with a ratchet, and the wedge block and the, make the wheel can be when the nook closing member descends, the wheel rotates and makes ratchet extrusion wedge, make the third spring withdrawal, the wheel can normally rotate along with the nook closing member, but when the nook closing member rose, the wheel was blockked by wedge and ratchet, can not remove along with the nook closing member, thereby enable wheel and rubber tyer and carry out an ascending spacing locking effect to the nook closing member, thereby promote the shock attenuation effect, can prevent the nook closing member rebound, when knocking seat and needle body, can further prevent that the nook closing member kick-backs and cause patient's misery. First sleeve pipe and lasso can slide from top to bottom, and when it slided the top, the hemisphere can be extruded in the inboard clearance of lasso, makes the hemisphere retract into the needle urceolus to it is more convenient to make control. The fixed ring and the first spring can ensure that the gap can extrude the hemisphere all the time due to the elasticity of the first spring, and when the needle core is required to ascend, only the ferrule needs to be pressed down, so that the hemisphere is popped out of the needle outer cylinder. The interference fit structure of recess and nook closing member prevents nook closing member and rubber tyer from skidding from promoting the frictional force between recess and the nook closing member. Through set up the bead in the concave recess, can effectively improve the stability of rubber tyer and nook closing member roll contact process.

Drawings

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line b of FIG. 1 in accordance with an embodiment of the present invention.

FIG. 3 is an enlarged view of a portion A of FIG. 2 according to an embodiment of the present invention.

Fig. 4 is a block diagram of a wedge and ratchet according to an embodiment of the present invention.

Fig. 5 is a bottom view of an embodiment of the present invention.

FIG. 6 is a block diagram of a lug in accordance with an embodiment of the present invention.

In the figure: 1. knocking the seat; 2. a needle core; 3. an outer needle barrel; 4. a stationary ring; 5. a first spring; 6. a ferrule; 7. a first sleeve; 8. a blocking block; 9. a piston; 10. a suction cup; 11. a needle body; 12. a first seal ring; 13. a second seal ring; 14. a second sleeve; 15. a gap; 16. a rubber wheel; 17. a first bracket; 18. a bearing; 19. a rotating shaft; 20. a wheel; 21. a ratchet; 22. a stopper; 23. a second spring; 24. a hemisphere; 25. a third spring; 26. inserting a rod; 27. a wedge block; 28. a third sleeve; 29. a recessed portion; 30. a rib; 31. reinforcing ribs 32, air bags; 33. a bracket.

Detailed Description

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.

Referring to fig. 1-6, a specific embodiment of the present invention includes a needle core 2, a knocking seat 1 is fixedly connected to the top of the needle core 2, a needle body 11 is fixedly connected to the bottom of the needle core 2, an outer needle cylinder 3 is movably sleeved on the outer side of the needle core 2, two rotating shafts 19 are coupled to the inner side of the outer needle cylinder 3 through a plurality of bearings 18, the two rotating shafts 19 are parallel to each other and symmetrical to each other with the axis of the outer needle cylinder 3 as the center, a wheel 20 is fixedly connected to the center of the rotating shafts 19, a plurality of annularly arranged ratchets 21 are fixedly connected to the outer side of the wheel 20, rubber wheels 16 are respectively connected to both ends of the wheel 20, the outer side of the rubber wheels 16 is in contact with the needle core 2, two third sleeve pipes 28 which are symmetrical to each other are movably inserted on the outer needle cylinder 3, a hemisphere 24 is fixedly connected to the outer side of the third sleeve pipes, a second spring 23 is connected between the stopper 22 and the inner wall of the needle outer cylinder 3, an insertion rod 26 is movably inserted in the third sleeve 28 through a third spring 25, a wedge block 27 is fixedly connected to the outer side of the insertion rod 26, and the wedge block 27 is selectively contacted with the ratchet 21. The invention relates to a collection device of hematopoietic stem cells, which has a collection mode consistent with the collection mode of the prior art, and is characterized in that a needle body 11 is arranged at a puncture part to beat a knocking seat 1 to insert a needle so as to enable a needle core 2 to move downwards when the collection device is punctured and extracted from bone with dense hematopoietic stem cells such as sternum or ilium, a needle outer cylinder 3, a rubber wheel 16 and a first sealing ring 12 thereof are used for limiting the needle core 2 and ensuring the precision and the stability of the needle insertion, a bearing 18 and a rotating shaft 19 are used for supporting and fixing the wheel 20, the wheel 20 is used for supporting two rubber wheels 16, the rubber wheels 16 can clamp the needle core 2 from the upper part and rotate along with the ascending and descending of the needle core 2, furthermore, a second spring 23 and a stop block 22 can enable the hemisphere 24 to be kept in a state of always keeping the hemisphere 24 at the outer side of the needle outer cylinder 3, when the collection device is used, the two hemispheroids 24 are pressed into the needle outer cylinder 3, an insertion rod 26 and a wedge block, the wedge block 27 and the ratchet 21 are shaped and structured, so that when the needle core 2 descends, the wheel 20 rotates to enable the ratchet 21 to extrude the wedge block 27, the third spring 25 retracts, the wheel 20 can normally rotate along with the needle core 2, but when the needle core 2 ascends, the wheel 20 is blocked by the wedge block 27 and the ratchet 21 and cannot move along with the needle core 2, and therefore the wheel 20 and the rubber wheel 16 can perform an upward limiting locking effect on the needle core 2, the damping effect is improved, the needle core 2 can be prevented from moving upwards, and when a knocking seat and the needle body 11 are knocked, the pain of a patient caused by rebounding of the needle core 2 can be further prevented. The outer side of the needle outer cylinder 3 is movably sleeved with a first sleeve 7, the top of the first sleeve 7 is fixedly connected with a ferrule 6, a gap 15 is formed in the inner side of the ferrule 6, and a hemisphere 24 is selectively located in the gap. The first sleeve 7 and the ferrule 6 can slide up and down, and when the first sleeve slides to the top, the gap 15 on the inner side of the ferrule 6 can extrude the hemisphere 24, so that the hemisphere 24 retracts into the needle outer cylinder 3, and the control is more convenient. The outer side of the needle outer cylinder 3 is fixedly sleeved with a fixed ring 4, and a first spring 5 is connected between the fixed ring 4 and the ferrule 6. The fixed ring 4 and the first spring 5 can ensure that the elastic force of the first spring 5 can always ensure that the gap 15 can extrude the hemispheroid 24, and when the needle core 2 is required to ascend, only the ferrule 6 needs to be pressed down, so that the hemispheroid 24 is ejected out of the needle outer cylinder 3. The outer side of the rubber wheel 16 is provided with an arc-shaped concave part 29, the outer side of the concave part 29 is in interference fit with the needle core 2, and the wheel 20 is in clearance fit with the needle core 2. The interference fit structure of the recessed portion 29 and the core 2 prevents the core 2 from slipping with the rubber roller 16 from lifting the friction force between the recessed portion 29 and the core 2. The surface of the concave part 29 is provided with a plurality of mutually parallel ribs 30, the included angle between each rib 30 and the axis of the needle core 2 is 15 degrees, and a plurality of reinforcing ribs 31 are connected between adjacent ribs 30. An air bag 32 is arranged in the rib 30, and a bracket 33 is connected between the air bag 32 and the top surface of the rib 30. Bead 30 can effectively improve the stability of rubber tyer 16 and nook closing member 2 rolling contact process, and gasbag 32 is used for improving the buffer capacity of bead 30 to vibrations, because gasbag 32 can lead to the vertical support ability decline of bead 30, through setting up bracket 33, can effectively reduce the loss of the vertical holding power of bead 30.

In addition, the bottom of the needle outer cylinder 3 is fixedly connected with a second sleeve 14 through a plurality of first supports 17 which are arranged in an annular manner, the outer side of the bottom of the second sleeve 14 is fixedly connected with a sucking disc 10, an annular piston 9 is movably arranged between the second sleeve 14 and the needle outer cylinder 3, a second sealing ring 13 is fixedly connected below the piston 9, the upper part of the piston 9 is fixedly connected with a first sleeve 7, and the top of the second sleeve 14 is also fixedly connected with a blocking block 8. by the device, when the ferrule 6 is moved downwards, the piston 9 can be driven to descend through the first sleeve 7, when the structure is used, the structure is placed on the body of a patient, the sucking disc 10 and the first sealing ring 12 are contacted with the skin of the patient, when the ferrule 6 is loosened, the ferrule 6 drives the piston 9 to move upwards under the action of the first spring 5, so that a negative pressure is generated in a space between the second sleeve 14 and the needle outer cylinder 3, and the medical nursing cup is adsorbed on the skin of a patient through the sucking disc 10 and the first sealing ring 12, so that a certain fixing effect can be achieved, and a better shock absorption effect is achieved.

The knocking seat, the needle core, the needle outer cylinder and other devices used in the invention are fully disclosed in the patent documents cited in the background technology, belong to the mature prior art, and the specific structures are not described in detail.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.