CN210871921U

CN210871921U - Improved bone marrow puncture needle

Info

Publication number: CN210871921U
Application number: CN201920217908.6U
Authority: CN
Inventors: 吴晓勇; 安仕刚; 王云龙
Original assignee: Guiyang College of Traditional Chinese Medicine
Current assignee: Guiyang College of Traditional Chinese Medicine
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-06-30
Anticipated expiration: 2029-02-15

Abstract

An improved marrow puncture needle, the utility model relates to the technical field of medical appliances; the lower end of the needle head is inserted in the fixed tube, the upper end of the needle head passes through the center of the stress disc and then is arranged on the same horizontal plane with the upper surface of the stress disc, the left and right ends of the lower surface of the stress disc are fixed with upper limit plates, the lower parts of the upper limit plates on the left and right sides are respectively provided with a limit post and a screw rod, the lower ends of the limit post and the screw rod are respectively inserted on the lower limit plates on the left and right sides of the fixed tube, the inner side wall of the lower limit plate on the right side is fixedly connected with a screw nut on the screw rod, the upper end of the screw rod is screwed with the right end of the U-shaped rod through a bearing, the left end of the U-shaped rod is fixed at the upper end of the limit post, the lower limit plates on the two ends of the fixed tube are respectively inserted with the limit post and the screw rod, the screw rod drives the limit post to move, the, low manufacturing cost and the like.

Description

Improved bone marrow puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to follow-on marrow puncture needle.

Background

Conventional marrow pjncture needle is similar with ordinary medical pjncture needle, the leading features is including one be used for with for example needle file and a cast needle body that the cylinder is connected, fixed connection between needle file and the needle body, cavity in the needle file is used for the needle body and for example the intercommunication between the cylinder, and current pjncture needle can not be according to the difference of patient's physique, the length that the pjncture needle pierced is controlled, the doctor is when the operation, the length overlength that this pjncture needle pierced just appears easily carelessly, cause the injury to the patient, and the security that has reduceed the pjncture needle, treat to improve urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a simple structure, reasonable in design, convenient to use's improved generation's marrow pjncture needle inserts respectively on the lower limiting plate on the fixed pipe both ends and is equipped with spacing post and lead screw, and the lead screw drives spacing post and removes, adjusts its upper end to need the position that reduces on to can carry on spacingly to the length that the puncture needle descends.

In order to achieve the above object, the utility model adopts the following technical scheme: the needle comprises a fixed tube, a needle head, a stress disc, a first lead screw and a limiting column, wherein the lower end of the needle head is inserted in the fixed tube, the lower end of the needle head and the lower end of the fixed tube are arranged in the same horizontal plane, the upper end of the needle head penetrates through the center of the stress disc and is arranged in the same horizontal plane as the upper surface of the stress disc, the stress disc is suspended above the fixed tube, upper limiting plates are fixed at the left end and the right end of the lower surface of the stress disc, the limiting column and the first lead screw are respectively arranged below the upper limiting plates at the left side and the right side, the lower ends of the limiting column and the first lead screw are respectively inserted on the lower limiting plates at the left side and the right side of the fixed tube, the lower limiting plates are respectively fixed on the side walls at the two sides of the fixed tube, the inner side wall of the lower limiting plate at the right side is fixedly connected with a nut on the first lead screw, the limiting column is suspended in the lower limiting plate on the left side.

Furthermore, fixing seats are fixed on the left side and the right side of the lower end of the fixing pipe, a plurality of suckers are distributed on the lower surface of each fixing seat at equal intervals, and the lower surfaces of the suckers and the lower end of the fixing pipe are arranged on the same horizontal plane.

Furthermore, a scale layer is arranged on the left side wall of the limiting column.

Furthermore, the upper end of the needle head is screwed with a connecting rod through a bearing, the right end of the connecting rod is fixed on a screw on a second lead screw, the lower end of the second lead screw is inserted into the connecting pipe and fixed through a bolt, the lower end of the connecting pipe penetrates through the base and then is sleeved on an output shaft of the motor and fixed through the bolt, and the motor is fixed in the base and connected with an external power supply.

Furthermore, the connecting rod comprises a first rod and a second rod, and the first rod is inserted into the second rod and fixed through a bolt.

Further, the motor is connected with a control switch, and the control switch is fixed at the upper end of the limiting column.

After the structure is adopted, the utility model discloses beneficial effect does: a follow-on marrow pjncture needle, insert respectively on the lower limiting plate on the fixed pipe both ends and be equipped with spacing post and lead screw, the lead screw drives spacing post and removes, adjusts its upper end on the position that needs reduce to can carry on spacingly to the length that the puncture needle descends, the utility model has the advantages of simple structure sets up rationally, the cost of manufacture is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Description of reference numerals:

the device comprises a fixed tube 1, a needle 2, a stress disc 3, a first screw rod 4, a limiting column 5, an upper limiting plate 6, a lower limiting plate 7, a U-shaped rod 8, a fixed seat 9, a sucker 10, a scale layer 11, a connecting rod 12, a first rod 12-1, a second rod 12-2, a second screw rod 13, a connecting pipe 14, a motor 15, a base 16 and a control switch 17.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to fig. 3, the technical solution adopted by the present embodiment is: the needle comprises a fixed tube 1, a needle head 2, a stress disc 3, a first lead screw 4 and a limiting column 5, wherein the lower end of the needle head 2 is inserted in the fixed tube 1, the lower end of the needle head and the lower end of the fixed tube 1 are arranged in the same horizontal plane, the upper end of the needle head 2 passes through the center of the stress disc 3 and is arranged in the same horizontal plane as the upper surface of the stress disc 3, the stress disc 3 is suspended above the fixed tube 1, upper limiting plates 6 are welded and fixed at the left end and the right end of the lower surface of the stress disc 3, the limiting column 5 and the first lead screw 4 are respectively arranged below the upper limiting plates 6 at the left side and the right side, the lower ends of the limiting column 5 and the first lead screw 4 are respectively inserted on the lower limiting plates 7 at the left side and the right side of the fixed tube 1, the lower limiting plates 7 are respectively welded and fixed on the side walls at the two sides of the fixed tube 1, the inner side wall of the lower limiting plate 7 at the right side is welded, the bearing sleeve is arranged on the first screw rod 4, the inner ring of the bearing sleeve is welded and fixed with the first screw rod 4, the outer ring of the bearing sleeve is welded and fixed with the U-shaped plate 8, the left end of the U-shaped rod is welded and fixed at the upper end of the limiting column 5, and the limiting column 5 is suspended in the lower limiting plate 7 on the left side.

Further, all welded fastening has fixing base 9 on the left and right sides of fixed pipe 1 lower extreme, and several sucking discs 10 are distributed to equidistance on the lower surface of this fixing base 9, and the lower surface of this sucking disc 10 is same horizontal plane setting with the lower extreme of fixed pipe 1, and accessible sucking disc 10 will fix fixed pipe 1 on one's body at the patient to convenient puncture.

Furthermore, a scale layer 11 is carved on the left side wall of the limiting column 5, and the height of the limiting column 5 can be adjusted according to the scale layer 11.

Further, the upper end of the needle head 2 is screwed with a connecting rod 12 through a bearing, the bearing sleeve is arranged at the upper end of the needle head 2, the inner ring of the bearing sleeve is welded and fixed with the needle head 2, the outer ring of the bearing sleeve is welded and fixed with the left end of the connecting rod 12, the right end of the connecting rod 12 is welded and fixed on a nut on a second lead screw 13, the lower end of the second lead screw 13 is inserted into a connecting pipe 14 and fixed through a bolt, after the lower end of the connecting pipe 14 penetrates through a base 16, the lower end of the connecting pipe 14 is sleeved on an output shaft of a motor 15 and fixed through the bolt, the motor 15 is fixed in a base 16 through the bolt and connected with an external power supply, the connecting pipe 14 can be driven to rotate by the motor 15, the connecting pipe 14 drives the second lead screw 13 to rotate, the.

Further, the connecting rod 12 is composed of a first rod 12-1 and a second rod 12-2, and the first rod 12-1 is inserted into the second rod 12-2 and fixed through bolts.

Further, the motor 15 is connected with a control switch 17 through a lead, the control switch 17 is fixed at the upper end of the limiting column 5 through a bolt, and when the upper limiting plate 6 moves downwards to touch the control switch 17, the motor 15 can be turned off through the control switch 17.

The working principle of the specific embodiment is as follows: when in use, the base 16 is placed at the head of a sickbed, the bolt on the connecting rod 12 is loosened, the fixing seat 9 is pulled towards the direction of a patient, the sucking disc 10 below the fixing seat is sucked at the position where bone marrow is required to be extracted, the bolt on the connecting rod 12 is screwed down after the fixing is well done, the first lead screw 4 is rotated according to different physiques of the patient, the first lead screw 4 drives the U-shaped rod 8 to move downwards through the nut on the first lead screw 4, the U-shaped rod 8 drives the limiting column 5 to move downwards so as to adjust the limiting column 5 to the required position, then the stress disc 3 is pressed by hand, the motor 15 is started, the motor 15 drives the connecting pipe 14 to rotate, the connecting pipe 14 drives the second lead screw 13 to rotate, the second lead screw 13 drives the connecting rod 12 to move through the nut on the second lead screw 13, the left end of the connecting rod 12 drives the needle head 2 to move downwards, the lower end of the needle head 2, when the upper limit plate 6 touches the control switch 17, the motor 15 is turned off through the control switch 17, and the downward pressing is stopped, at this time, the puncture needle reaches the required position.

After adopting above-mentioned structure, this embodiment beneficial effect does:

1. the lower limiting plates 7 on the two ends of the fixed tube 1 are respectively inserted with a limiting column 5 and a screw rod, the screw rod drives the limiting column 5 to move, and the upper end of the screw rod is adjusted to the position to be lowered, so that the descending length of the puncture needle can be limited;

2. the upper end of the needle head 2 is screwed with a connecting rod 12 through a bearing, the other end of the connecting rod 12 is fixedly connected with a nut on a second lead screw 13, and the lower end of the second lead screw 13 is connected with a motor 15 through a connecting pipe 14, so that the motor 15 can drive the connecting rod 12 to move up and down through the lead screw, and the connecting rod 12 drives the needle head 2 to move down, thereby saving the labor intensity of medical staff.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. An improved bone marrow puncture needle is characterized in that: the needle comprises a fixed tube (1), a needle head (2), a stress disc (3), a first lead screw (4) and a limiting plate (5), wherein the lower end of the needle head (2) is inserted into the fixed tube (1), the lower end of the needle head and the lower end of the fixed tube (1) are arranged on the same horizontal plane, the upper end of the needle head (2) penetrates through the center of the stress disc (3) and then is arranged on the same horizontal plane as the upper surface of the stress disc (3), the stress disc (3) is suspended above the fixed tube (1), the left end and the right end of the lower surface of the stress disc (3) are respectively fixed with the upper limiting plate (6), the limiting plate (5) and the first lead screw (4) are respectively arranged below the upper limiting plates (6) on the left side and the right side, the lower ends of the limiting plate (5) and the first lead screw (4) are respectively inserted on the lower limiting plates (7) on the left side and the right side of the fixed tube (1), the lower limiting plates (7), the inner side wall of the lower limiting plate (7) on the right side is fixedly connected with a nut on a first screw rod (4), the upper end of the first screw rod (4) is connected with the right end of a U-shaped rod (8) through a bearing in a rotating mode, the left end of the U-shaped rod is fixed at the upper end of a limiting column (5), and the limiting column (5) is suspended in the lower limiting plate (7) on the left side.

2. An improved bone marrow puncture needle according to claim 1, wherein: all be fixed with fixing base (9) on the left and right sides of fixed pipe (1) lower extreme, a plurality of sucking disc (10) of equidistance distribution on the lower surface of this fixing base (9), the lower surface of this sucking disc (10) and the lower extreme of fixed pipe (1) are same horizontal plane setting.

3. An improved bone marrow puncture needle according to claim 1, wherein: and a scale layer (11) is arranged on the left side wall of the limiting column (5).

4. An improved bone marrow puncture needle according to claim 1, wherein: the upper end of the needle head (2) is connected with a connecting rod (12) in a screwed mode through a bearing, the right end of the connecting rod (12) is fixed to a nut on a second screw rod (13), the lower end of the second screw rod (13) is inserted into a connecting pipe (14) and fixed through a bolt, the lower end of the connecting pipe (14) penetrates through a base (16) and then is sleeved on an output shaft of a motor (15), the motor (15) is fixed in the base (16) through the bolt, and the motor is connected with an external power source.

5. An improved bone marrow puncture needle according to claim 4, wherein: the connecting rod (12) is composed of a first rod (12-1) and a second rod (12-2), and the first rod (12-1) is inserted into the second rod (12-2) and fixed through bolts.

6. An improved bone marrow puncture needle according to claim 4, wherein: the motor (15) is connected with a control switch (17), and the control switch (17) is fixed at the upper end of the limiting column (5).