CN213129600U

CN213129600U - Bone puncture needle

Info

Publication number: CN213129600U
Application number: CN202021067155.4U
Authority: CN
Inventors: 洪攀
Original assignee: Shaoxing Peoples Hospital
Current assignee: Shaoxing Peoples Hospital
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-05-07
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses an osteosynthesis needle, including the needle body, the needle cover, install the locating part at needle cover middle part outer wall, spacing regulating part of fixing on needle cover middle part and locating part, the needle body includes interconnect's nook closing member and needle handle, the needle cover includes interconnect's pin sheath and needle body cap, the needle sheath laminating passes regulating part upper portion, needle handle part stretch into in the needle body cap and with needle body cap spiro union, the needle core laminates in proper order and passes needle body cap and pin sheath, the sunken spacing groove that forms concave ring groove and a pair of and concave ring groove intercommunication of needle body cap up end, the regulating part includes location portion, location portion includes the many pairs of locating piece of interval locating location portion annular outer wall, location portion passes the horizontal part block that the locating part stretched into concave ring groove and locating part between two pairs of locating pieces, stretch into a plurality of pairs of locating piece and. The utility model discloses the application of force of being convenient for makes things convenient for clinical operation, and is applicable to different fat and thin patients' the marrow demand of taking out, guarantees the accuracy of puncture.

Description

Bone puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a bone puncture needle.

Background

Bone marrow puncture is a commonly used diagnosis and treatment method in hematology, and various components in bone marrow and morphological changes and composition changes of cells can be seen through bone perforation, so that specific causes of diseases can be diagnosed. The conventional method is to use a bone needle to puncture and extract bone marrow after local anesthesia of a patient. The bottom area of a needle handle of the existing bone puncture needle is small, so that the problem that the needle head is difficult to penetrate into bone marrow by applying force during operation exists; in addition, as the number of obese patients increases, the current bone penetrating needles are unable to penetrate bone to effectively extract bone marrow due to the short exposed needle head portion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a bone puncture needle, the application of force of being convenient for makes things convenient for clinical operation, and is applicable to different fat and thin patients' the bone marrow demand of taking out.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a bone puncture needle, includes needle body, needle cover, installs locating part, the spacing regulating part of fixing on needle cover middle part and locating part at needle cover middle part outer wall, the needle body includes interconnect's nook closing member and needle handle, the needle cover includes interconnect's pin sheath and needle body cap, the needle sheath laminating passes regulating part upper portion, needle handle part stretch into in the needle body cap and with needle body cap spiro union, the nook closing member is in proper order passed needle body cap and pin sheath, the sunken spacing groove that forms the concave ring groove and a pair of and concave ring groove intercommunication of needle body cap up end, the regulating part includes location portion, location portion includes many pairs of locating pieces of interval located location portion annular outer wall, location portion passes the horizontal part block that the locating part stretched into concave ring groove and locating part between two pairs of locating pieces, stretches into a plurality of pairs of needle body cap locating piece and spacing groove block.

The front end face of the needle sheath is obliquely arranged, and the front end face of the needle core is flush with the front end face of the needle sheath.

The outer diameter of the tail part of the needle handle exposed out of the needle sleeve is 2-3 times of the outer diameter of the needle body cap.

The horizontal part of the limiting part is provided with a pair of through holes for the positioning block to pass through, and when the positioning part is clamped with the limiting part, the projections of the positioning block and the through holes on the horizontal plane are not overlapped.

The utility model has the advantages that: the force application of the bone puncture needle is more convenient by widening the bottom of the needle handle, so that the clinical operation is convenient; the circumference spacing connection of needle cover and regulating part is realized through the block setting of spacing groove and locating piece, the upper and lower spacing connection of locating part and regulating part is realized through the block setting of locating part horizontal part and locating piece to can come rotatory locating part in order to adjust the needle sheath and the nook closing member part that expose in the locating part through unscrewing the hexagon socket head cap jackscrew, and then make the bone puncture needle be applicable to different fat thin patient's the bone marrow demand of taking out, guarantee the accuracy of puncture, structural design is simple, and it is convenient to adjust, has practical value.

Drawings

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

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a top view of the limiting member of the present invention;

fig. 4 is a top view of the needle guard of the present invention.

In the figure: the needle body 1, the stylet 11, the needle handle 12, the needle cover 2, the needle sheath 21, the needle body cap 22, the concave ring groove 23, the limiting groove 24, the convex column 25, the limiting piece 3, the perforation 31, the adjusting piece 4, the handle part 41, the positioning part 42, the positioning block 43, the front force piece 44 and the inner hexagonal jackscrew 5.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 4, an osteosynthesis needle comprises a needle body 1, a needle sheath 2, a limiting member 3 mounted on the outer wall of the middle part of the needle sheath 2, and an adjusting member 4 fixed on the middle part of the needle sheath 2 and the limiting member 3 in a limiting manner, wherein the specific mounting mode of the limiting member 3 is as follows: the annular side part of the limiting part 3 is provided with a transverse thread through hole, an inner hexagonal jackscrew 5 is screwed in the thread through hole, and the limiting part 3 is fixed on the upper part of the needle body cap 22 by screwing the inner hexagonal jackscrew 5.

The needle body 1 includes interconnect's nook closing member 11 and needle handle 12, the needle cover 2 includes interconnect's nook closing member 21 and needle body cap 22, the attachment of nook closing member 21 passes regulating part 4 upper portion, needle handle 12 part stretch into in the needle body cap 22 and with needle body cap 22 spiro union, the attachment of nook closing member 11 in proper order passes needle body cap 22 and nook closing member 21, the sunken spacing groove 24 that forms concave ring groove 23 and a pair of and concave ring groove 23 intercommunication of needle body cap 22 up end, regulating part 4 includes location portion 42, location portion 42 is the cylindrical structure, location portion 42 includes the interval and locates the many pairs of locating piece 43 of location portion 42 annular outer wall, location portion 42 passes locating part 3 and stretches into concave ring groove 23 and the horizontal part block of locating part 3 between two pairs of locating piece 43, realizes that locating part 3 is spacing from top to bottom to regulating part 4 through above-mentioned mode, stretches into a plurality of pairs of needle body cap 22 locating piece 43 and spacing groove, the circumferential limiting and fixing of the needle sleeve 2 to the adjusting part 4 are realized through the above mode. The needle sheath 21 and the needle core 11 exposed out of the adjusting part 4 are needles, so that the adjusting part 4 and the needle sleeve 2 can be connected more stably when the needles are shortest, the thickness of the positioning block 43 at the lowest end can be thickened, and the clamping area is increased. The setting of regulating part 4 is used for adjusting syringe needle length, makes the bone puncture needle be applicable to different fat thin patients, when puncturing the operation to thin person, adjusts the length of syringe needle to regulating part 4 protects the syringe needle, can avoid bending because of using for a long time or exerting oneself too big messenger's syringe needle, guarantees the accuracy of puncture.

The upper center of the needle body cap 22 is provided with a convex column 25 through which the needle core 11 passes, the needle sheath 21 is connected with the front end surface of the convex column 25, a concave ring groove 23 is arranged between the convex column 25 and the outer side of the needle body cap 22, the arrangement of the convex column 25 can ensure the firmness of the needle core 11 during puncture, and the needle core 11 is prevented from being bent or broken.

The front end surface of the needle sheath 21 is obliquely arranged, and the front end surface of the needle core 11 is flush with the front end surface of the needle sheath 21.

The outer diameter of the tail part of the needle handle 12 exposed out of the needle sleeve 2 is 2-3 times of the outer diameter of the needle body cap 22, so that the operation and force application are convenient.

The horizontal portion of the limiting member 3 is provided with a pair of through holes 31 for the positioning block 43 to pass through, the longitudinal section of the limiting member 3 is in an inverted U shape, the horizontal portion of the limiting member 3 is not provided with an opening hole for the positioning portion 42 to pass through, the through holes 31 are arranged on two sides of the opening hole and communicated with the opening hole, and when the positioning portion 42 is clamped with the limiting member 3, the projections of the positioning block 43 and the through holes 31 on the horizontal plane are not overlapped.

The adjusting part 4 further comprises a handle part 41 connected with the front end of the positioning part 42 and a front force sheet 44 arranged at the front end of the handle part 41, the handle part 41 is used for applying force during puncture, the firmness of the needle sheath 21 during puncture force application can be ensured, the needle sheath 21 is prevented from being bent or broken, and anti-skid grains can be arranged on the outer wall of the handle part 41, so that the slipping caused by the sweating of the hand in the operation process is avoided, and the accuracy of puncture is improved; the front force piece 44 can avoid serious consequences caused by forward slipping of the hand due to excessive force when the adjusting part 4 is held by the hand for puncturing.

When the length of the needle head is adjusted, the hexagon socket head cap screws 5 are firstly unscrewed to enable the limiting pieces 3 to rotate circumferentially, the limiting pieces 3 are rotated to enable the through holes 31 and the positioning blocks 43 to be located on the same vertical line, then the adjusting pieces 4 are pulled to required positions, meanwhile, the horizontal portions of the limiting pieces 3 are guaranteed to be clamped between the pair of positioning blocks 43, then the limiting pieces 3 are rotated to enable the through holes 31 and the positioning blocks 43 to be not overlapped in projection on the horizontal plane, and finally the hexagon socket head cap screws 5 are screwed down.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an orthopedics needle, includes needle body (1), needle cover (2), installs locating part (3) at needle cover (2) middle part outer wall, spacing regulating part (4) of fixing on needle cover (2) middle part and locating part (3), its characterized in that: needle body (1) including interconnect's nook closing member (11) and needle handle (12), needle cover (2) including interconnect's pin sheath (21) and needle body cap (22), pin sheath (21) laminating passes regulating part (4) upper portion, needle handle (12) part stretch into in needle body cap (22) and with needle body cap (22) spiro union, needle core (11) laminate in proper order and pass needle body cap (22) and pin sheath (21), needle body cap (22) up end is sunken to form concave ring groove (23) and a pair of spacing groove (24) that communicate with concave ring groove (23), regulating part (4) include location portion (42), location portion (42) are including the many pairs of locating piece (43) of interval locating location portion (42) annular outer wall, location portion (42) pass locating part (3) and stretch into concave ring groove (23) and the horizontal part block of locating part (3) between two pairs of locating piece (43), a plurality of pairs of positioning blocks (43) extending into the needle body cap (22) are clamped with the limiting grooves (24).

2. The bone-piercing needle of claim 1, wherein: the front end face of the needle sheath (21) is obliquely arranged, and the front end face of the needle core (11) is flush with the front end face of the needle sheath (21).

3. The bone-piercing needle of claim 1, wherein: the outer diameter of the tail part of the needle handle (12) exposed out of the needle sleeve (2) is 2-3 times of the outer diameter of the needle body cap (22).

4. The bone-piercing needle of claim 1, wherein: the horizontal part of the limiting piece (3) is provided with a pair of through holes (31) for the positioning block (43) to pass through, and when the positioning part (42) is clamped with the limiting piece (3), the projections of the positioning block (43) and the through holes (31) on the horizontal plane are not overlapped.