CN213552193U - Puncture needle - Google Patents

Abstract

The utility model discloses a puncture needle, include: a needle tube; the needle seat is arranged at the rear end of the needle tube; the needle wing, the needle wing has front and back, the front is towards the place ahead, the front is equipped with first anti-skidding structure, the needle wing still is equipped with the link, the link with the outside of needle file is connected and is makeed the needle wing can turn over backward. The utility model, because the needle wing protrudes out of the needle seat, the outer side of the needle seat is connected with the connecting end of the needle wing, the hand of the medical staff is propped against the back of the needle wing, and the needle seat is prevented from loosening from the hand of the medical staff; when medical personnel took the pjncture needle and extract the action, with the needle wing of turning over backward, medical personnel's hand is held between the fingers on the positive first anti-skidding structure of needle wing, and the needle file is come loose from medical personnel's hand to the end, and medical personnel take the pjncture needle and carry out the puncture operation and be more stable. The utility model can be applied to the medical appliance technology.

Description

Puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a puncture needle.

Background

The needle seat of the puncture needle is cylindrical, and when the puncture needle is used, a medical worker needs to hold the needle seat by hand to perform puncture operation. However, the needle seat of the existing puncture needle is small in size, so that medical staff can easily get off the needle seat when taking the needle seat to puncture, the puncture needle is deviated, and the patient is injured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a puncture needle to solve one or more technical problems in the prior art and at least provide a beneficial selection or creation condition.

The technical scheme adopted for solving the technical problems is as follows:

a puncture needle, comprising:

a needle tube;

the needle seat is arranged at the rear end of the needle tube;

the needle wing, the needle wing has front and back, the front is towards the place ahead, the front is equipped with first anti-skidding structure, the needle wing still is equipped with the link, the link with the outside of needle file is connected and is makeed the needle wing can turn over backward.

The utility model has the advantages that: the outer side of the needle seat is connected with the connecting end of the needle wing, when the medical staff takes the puncture needle to insert, the medical staff pushes the needle seat forwards by hands, the hand of the medical staff is abutted against the back surface of the needle wing, the needle seat is prevented from sliding relative to the hand of the medical staff, and the needle seat is prevented from being loosened from the hand of the medical staff; when medical personnel took the pjncture needle to extract the action, turn over the needle wing backward with the hand, the outside of the lateral surface of needle file is turned over in the front of needle wing, medical personnel's hand is held between the fingers on the positive first anti-skidding structure of needle wing, medical personnel extracts the pjncture needle backward, first anti-skidding structure increases medical personnel's hand and the frictional force of needle wing, thereby avoid needle wing and medical personnel's hand to take place the relative slip, prevent that the needle file from taking off from medical personnel's hand, medical personnel take the pjncture needle to carry out the puncture operation and are more stable.

As a further improvement of the technical scheme, a second anti-slip structure is arranged on the outer side surface of the needle seat.

Be equipped with second anti-skidding structure on the needle file, when medical personnel took the needle file, second anti-skidding structure increased medical personnel's hand and the frictional force of needle file to avoid medical personnel's hand and needle file to take place relative slip, prevent that the needle file from taking off from medical personnel's hand pine.

As a further improvement of the above technical solution, the second anti-slip structure includes at least two protruding strips protruding from the outer side surface of the needle seat, and all the protruding strips are sequentially distributed on the outer side surface of the needle seat at intervals along the front-back direction.

Second anti-skidding structure is for setting up a plurality of sand grips on the needle file lateral surface, all sand grips along fore-and-aft direction interval distribution in proper order on the lateral surface of needle file, a plurality of sand grips make the lateral surface of needle file form unevenness's rough surface, medical personnel's hand is held between the fingers on the lateral surface of needle file, make along the ascending frictional force increase of fore-and-aft direction between the lateral surface of needle file and medical personnel's the hand, thereby avoid medical personnel's hand and needle file to take place the relative slip, prevent that the needle file from taking off from medical personnel's hand pine.

As a further improvement of the above technical solution, the first anti-slip structure includes at least two protruding blocks protruding from the front surface, and all the protruding blocks are sequentially arranged outward along the radial direction of the needle tube.

First anti-skidding structure is for setting up a plurality of lugs on the needle wing is positive, all lugs are outwards arranged along the radial of needle tubing in proper order, a plurality of lugs make the front of needle wing form unevenness's rough surface, medical personnel turn over the needle wing backward with the hand, the outside of the lateral surface of needle wing is rolled over to the front of needle wing, medical personnel's hand is held between the fingers in the front of needle wing, the lug makes the frictional force increase along the fore-and-aft direction between the front of needle wing and medical personnel's the hand, thereby avoid medical personnel's hand and needle wing to take place the relative slip, prevent that the needle file from taking off from medical personnel's hand pine.

As a further improvement of the above technical scheme, a connecting seat is arranged at the front end of the needle seat, the connecting seat protrudes forwards, the needle tube is arranged on the front side surface of the connecting seat, the needle tube extends forwards, the puncture needle further comprises a protective cap, the protective cap is hollow inside, the rear end of the protective cap is open, the rear end of the protective cap is sleeved on the connecting seat, the protective cap is arranged around the periphery of the needle tube, and the inner wall of the protective cap is in transition fit with the outer side surface of the connecting seat.

The front end of the needle seat is provided with a connecting seat, the needle tube is arranged on the front side face of the connecting seat, the protective cap is sleeved on the outer side face of the connecting seat, the inner wall of the protective cap is in transition fit with the outer side face of the connecting seat, the protective cap is used for surrounding protection of the needle tube, and the needle tube is prevented from being exposed.

As a further improvement of the technical scheme, a groove is arranged on the outer side surface of the connecting seat and surrounds the periphery of the connecting seat for one circle.

The recess is around the periphery round of connecting seat, and the recess makes the connecting seat lateral surface form the concave-convex surface, and when the protective cap cover was located on the connecting seat, along the frictional force increase of fore-and-aft direction between protective cap and the connecting seat, the protective cap was prevented from taking off from the connecting seat pine.

As a further improvement of the above technical solution, a holding portion is provided at the front portion of the needle base, the cross-sectional area of the holding portion gradually increases from the rear to the front, and the holding portion is provided at the rear side of the needle wing.

A holding part is arranged between the front part of the needle seat and the back surface of the needle wing, a medical worker holds the holding part with a hand to perform puncture operation, the medical worker pushes the needle seat forwards with the hand, the cross section area of the holding part is gradually increased from back to front, so that the contact surface between the holding part and the hand of the medical worker is gradually inclined with the thrust direction, the thrust of the hand of the medical worker to the holding part is gradually changed into pressure, the friction force between the hand of the medical worker and the holding part is increased, the needle seat and the hand of the medical worker are prevented from sliding relatively, and the needle seat is prevented from being loosened from the hand of the medical worker; the appearance of the holding part is more matched with the holding shape of the hand of the medical staff, so that the medical staff can hold more comfortably.

As a further improvement of the technical scheme, the rear end of the needle seat is provided with a connecting part, the connecting part is cylindrical, and the outer side wall of the connecting part is provided with an external thread.

Be equipped with the external screw thread on the lateral wall of the connecting portion of needle file rear end, the external screw thread is used for connecting the syringe for the syringe is inseparabler with being connected of needle file, and threaded connection is more stable.

As a further improvement of the technical scheme, a cavity is arranged in the needle base, the rear end of the cavity is open, the front end of the cavity is of a conical structure with a large rear part and a small front part, and the front end of the cavity is communicated with the needle tube.

The rear end of a cavity in the needle base is communicated with the injector, the front end of the cavity is communicated with the needle tube, the front end of the cavity is of a conical structure with a large back and a small front, when the puncture needle is used for injecting liquid medicine, the liquid medicine enters the needle tube from back to front along the conical structure, and the conical structure is beneficial to improving the flow rate of the liquid medicine and improving the diffusion speed when the liquid medicine is discharged from the needle tube; when the puncture needle is used for percutaneous catheter intubation, the conical structure is helpful for guiding a guide wire to be inserted into the needle tube from the cavity; when the pjncture needle was used for organizing the sample, the sample was followed the needle tubing and is flowed into in the toper structure, helps slowing down the velocity of flow of sample, and the sample volume is changeed and is controlled, is favorable to the sample more accurate.

As a further improvement of the above technical solution, the needle holder further comprises:

the abutting part is arranged on the outer side wall of the needle seat, the abutting part protrudes outwards, a first abutting surface is arranged on the outer side surface of the abutting part, the connecting end is arranged at the side of the abutting part, a second abutting surface is arranged on the outer side surface of the connecting end, the second abutting surface is opposite to the first abutting surface, the second abutting surface is parallel to the first abutting surface, and the second abutting surface abuts against the first abutting surface;

the hinge is an elastic sheet, and two ends of the hinge are respectively connected with the rear side face of the abutting part and the rear side face of the connecting end.

Be equipped with the butt portion on the lateral wall of needle file, the link sets up in the side of butt portion, and the first butt face of butt portion offsets with the second butt face of link, through the trailing flank of hinged joint butt portion and the trailing flank of link for the needle wing can turn over backward, makes the connection structure of needle wing and needle file simple, easily production.

Drawings

The present invention will be further explained with reference to the drawings and examples;

FIG. 1 is a front view of an embodiment of a lancet provided in the present invention;

FIG. 2 is a cross-sectional view of an embodiment of a lancet provided in the present invention;

FIG. 3 is an enlarged view of A in FIG. 2;

FIG. 4 is a plan view of an embodiment of a puncture needle according to the present invention;

FIG. 5 is a right side view of an embodiment of a lancet provided in the present invention;

FIG. 6 is a cross-sectional view of a lancet provided in accordance with the present invention, with the wings of one embodiment of the lancet turned over rearward;

FIG. 7 is an enlarged view of B in FIG. 6;

fig. 8 is a right side view of the puncture needle of the present invention, in which the needle wing of the embodiment is turned backward.

100. The needle tube comprises a needle tube body, a needle seat 210, a second anti-slip structure 211, a convex strip 220, a connecting seat 221, a groove 230, a holding part 240, a connecting part 250, a cavity 260, an abutting part 261, a first abutting surface 270, a hinge 300, a needle wing 301, a front surface 302, a back surface 303, a connecting end 310, a first anti-slip structure 311, a convex block 320, a second abutting surface 400 and a protective cap.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 8, the puncture needle of the present invention is made in the following embodiments:

the puncture needle comprises a needle tube 100, a needle seat 200 and needle wings 300, wherein the front end of the needle seat 200 is provided with a connecting seat 220, the connecting seat 220 protrudes forwards, the connecting seat 220 is provided with through holes for installing the needle tube 100, the through holes penetrate through the connecting seat 220 along the front and back direction, the needle tube 100 is inserted into the through holes from the front end of the connecting seat 220, so that the needle tube 100 is arranged on the front side surface of the connecting seat 220, the outer side of the connecting seat 220 is provided with two grooves 221, the grooves 221 surround the periphery of the connecting seat 220 for one circle, the two grooves 221 are sequentially arranged on the connecting seat 220 at intervals from front to back, a protective cap 400 is a hollow shell structure, the rear end of the protective cap 400 is open, the rear end of the protective cap 400 is sleeved on the connecting seat 220, the port shape of the protective cap 400 is matched with the appearance of the connecting, so that the assembly of the protective cap 400 and the connection socket 220 is more stable.

The front end of the needle base 200 is provided with a butt part 260, the butt part 260 protrudes to the outside of the needle base 200, the outer side of the butt part 260 is provided with a first butt surface 261, the first butt surface 261 extends along the front-back direction, the connection end 303 of the needle wing 300 is arranged at the side of the butt part 260, the first butt surface 261 faces the connection end 303, the outer side of the connection end 303 opposite to the first butt surface 261 is provided with a second butt surface 320, the second butt surface 320 is opposite to the first butt surface 261, the second butt surface 320 is parallel to the first butt surface 261, the rear side of the butt part 260 of the needle base 200 is provided with a hinge 270, the hinge 270 is an elastic sheet, the two ends of the hinge 270 are respectively connected with the rear side of the butt part 260 and the rear side of the connection end 303, so that the needle wing 300 is hinged on the butt part 260 of the needle base 200, and because the hinge 270, the needle seat 200, the hinge 270 and the needle wing 300 are injection-molded integrally, that is, the needle seat 200, the hinge 270 and the needle wing 300 are injection-molded by the same mold, that is, the hinge 270 is an indentation elastic sheet connecting the needle seat 200 and the needle wing 300, so that the needle wing 300 can be turned backwards, when the needle wing 300 is turned forwards, the second abutting surface 320 of the needle wing 300 abuts against the first abutting surface 261 of the abutting part 260, the abutting part 260 obstructs the needle wing 300 to continue turning forwards, that is, the abutting part 260 restricts the forward turning of the needle wing 300, the number of the needle wings 300 is two, the two needle wings 300 are respectively arranged on two opposite sides of the needle seat 200, the number of the abutting parts 260 is two, and the positions of the two abutting parts 260 correspond to the positions of.

The needle wing 300 is provided with a front surface 301 and a back surface 302, the front surface 301 faces to the front, the back surface 302 faces to the back, the front surface 301 is provided with a first anti-slip structure 310, the first anti-slip structure 310 is a convex block 311, the convex block 311 protrudes forwards, the convex block 311 is provided with a plurality of convex blocks, all the convex blocks 311 are sequentially arranged outwards along the radial direction of the needle tube 100, the front part of the needle base 200 is provided with a holding part 230, the cross section area of the holding part 230 is gradually increased from back to front, so that the holding part 230 forms an inverted cone structure gradually increased forwards, the holding part 230 is arranged at the back of the needle wing 300, the holding part 230 is connected with the back side surface of the abutting part 260, the outer side surface of the needle base 200 is provided with a second anti-slip structure 210, the second anti-slip structure 210 is a convex strip 211, the convex strip 211 is arranged on the outer side surface of the needle base 200, specifically, the convex, the rear end of needle file 200 is equipped with connecting portion 240, the appearance of connecting portion 240 is the cylinder, be equipped with the external screw thread on the lateral wall of connecting portion 240, the external screw thread is used for connecting the syringe, the inside of needle file 200 is equipped with cavity 250, the rear end of cavity 250 runs through needle file 200, the front end of cavity 250 is big-end-in-the-back toper cavity structures, the front end and the needle tubing 100 intercommunication of cavity 250, after the syringe is connected with the connecting portion 240 of needle file 200 rear end, syringe and cavity 250 intercommunication make and form the passageway of intercommunication between needle tubing 100, cavity 250, the syringe.

In some embodiments, the needle holder 200 is connected to the connecting end 303 of the needle wing 300 in various ways, for example, the needle holder 200 is provided with a shaft hole, the extending direction of the shaft hole is perpendicular to the axis of the needle tube 100, the connecting end 303 is provided with a pin shaft, the pin shaft is inserted into the shaft hole, so that the needle wing 300 is hinged to the needle holder 200, the needle wing 300 rotates forwards or backwards, the front side surface of the needle holder 200 is provided with a limiting block, the limiting block extends out of the needle holder 200, when the needle wing 300 rotates to the side of the limiting block, the rear side surface of the limiting block abuts against the front surface 301 of the needle wing 300, the limiting block is used for limiting the forward rotation of the needle wing 300; or the connecting end 303 is connected with the needle base 200 through a hinge, and meanwhile, a limiting block is arranged on the hinge to limit the forward overturning angle of the needle wing 300, so that the needle wing 300 is prevented from overturning to the front of the needle base 200.

In some embodiments, the first anti-slip structure may be an anti-slip mat, such as a rubber mat with high anti-slip performance, a plastic mat with high surface roughness, or the like; or the first anti-skid structure is a rough surface formed by a concave-convex structure; or the first anti-slip structure is a plane provided with an adhesive; of course, the second anti-slip structure may be selected with reference to the first anti-slip structure.

In some embodiments, the connection between the connection socket 220 and the protection cap 400 may be in various forms, for example, the connection socket 220 is a cylinder, an external thread is disposed on an outer sidewall of the connection socket 220, a port of the protection cap 400 is a circular hole, an internal thread is disposed on an inner wall of the port of the protection cap 400, and the connection socket 220 and the protection cap 400 are connected by a thread; or the shape of the connecting seat 220 is matched with the shape of the port of the protective cap 400, the protective cap 400 is sleeved on the connecting seat 220, the inner wall of the port of the protective cap 400 is provided with a buckle, the outer side wall of the connecting seat 220 is provided with a buckle position, and the connecting seat 220 is clamped with the protective cap 400.

In some embodiments, chamber 250 is a cylindrical chamber, the forward end of chamber 250 is not provided with a tapered structure, and needle cannula 100 communicates with the forward end of chamber 250, so that chamber 250 has a simple structure and needle hub 200 is easy to manufacture.

In some embodiments, the front portion of the needle holder 200 is not provided with the holding portion 230, the shape of the needle holder 200 is a columnar structure, when the puncture needle is used for insertion operation, a medical worker pushes the needle holder 200 forward with a hand, and the needle wing 300 is arranged on the front side of the needle holder 200, the hand of the medical worker abuts against the back 302 of the needle wing 300, so that the stable and smooth insertion operation of the puncture needle can be realized, and the needle holder 200 is simple in structure and easy to produce.

In some embodiments, the connecting portion 240 at the rear end of the needle holder 200 is not provided with external threads, the shape of the connecting portion 240 matches the shape of the output port of the syringe, the connecting portion 240 is inserted into the output port of the syringe, and the connecting portion 240 and the output port of the syringe are sealed by a sealing ring; or the outer side wall of the connecting part 240 is provided with a buckling step, the buckling step surrounds the periphery of the connecting part 240 for one circle, the inner wall of the output port of the syringe is provided with a buckling groove, the buckling groove surrounds the inner wall of the output port for one circle, the connecting part 240 is clamped with the output port of the syringe, and the buckling step and the buckling groove form a zigzag sealing structure.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims (10)

1. A puncture needle, characterized in that: the method comprises the following steps:

a needle tube (100);

the needle holder (200), the said needle holder (200) is set up in the rear end of the said syringe (100);

the needle wing (300), the needle wing (300) has front (301) and back (302), front (301) are towards the place ahead, front (301) are equipped with first non-slip structure (310), the needle wing (300) still is equipped with link (303), link (303) with the outside of needle file (200) is connected and is makeed the needle wing (300) can turn over backward.

2. A puncture needle according to claim 1, characterized in that: and a second anti-skid structure (210) is arranged on the outer side surface of the needle seat (200).

3. A puncture needle according to claim 2, characterized in that: the second anti-skid structure (210) comprises convex strips (211), the convex strips (211) protrude out of the outer side surface of the needle seat (200), the number of the convex strips (211) is at least two, and all the convex strips (211) are sequentially distributed on the outer side surface of the needle seat (200) at intervals in the front-back direction.

4. A puncture needle according to claim 1, characterized in that: the first anti-slip structure (310) comprises at least two protruding blocks (311), the protruding blocks (311) protrude out of the front surface (301), and all the protruding blocks (311) are sequentially arranged outwards along the radial direction of the needle tube (100).

5. A puncture needle according to claim 1, characterized in that: the front end of needle file (200) is equipped with connecting seat (220), connecting seat (220) are protruding forward, needle tubing (100) set up in on the leading flank of connecting seat (220), needle tubing (100) extend forward, the pjncture needle still includes protective cap (400), the inside cavity of protective cap (400), the rear end of protective cap (400) is uncovered, the rear end cover of protective cap (400) is located on connecting seat (220), protective cap (400) enclose to be located the periphery of needle tubing (100), the inner wall of protective cap (400) with the lateral surface transition fit of connecting seat (220).

6. A puncture needle according to claim 5, characterized in that: be equipped with recess (221) on the lateral surface of connecting seat (220), recess (221) surround the periphery of connecting seat (220) a circle.

7. A puncture needle according to claim 1, characterized in that: the front part of the needle seat (200) is provided with a holding part (230), the cross-sectional area of the holding part (230) is gradually increased from back to front, and the holding part (230) is arranged on the rear side of the needle wing (300).

8. A puncture needle according to claim 1, characterized in that: the rear end of needle file (200) is equipped with connecting portion (240), the appearance of connecting portion (240) is the cylinder, be equipped with the external screw thread on the lateral wall of connecting portion (240).

9. A puncture needle according to claim 1, characterized in that: the needle holder (200) is internally provided with a cavity (250), the rear end of the cavity (250) is open, the front end of the cavity (250) is of a conical structure with a large back and a small front, and the front end of the cavity (250) is communicated with the needle tube (100).

10. A puncture needle according to claim 1, characterized in that: the needle hub (200) further comprises:

the abutting part (260) is arranged on the outer side wall of the needle seat (200), the abutting part (260) protrudes outwards, a first abutting surface (261) is arranged on the outer side surface of the abutting part (260), the connecting end (303) is arranged on the side of the abutting part (260), a second abutting surface (320) is arranged on the outer side surface of the connecting end (303), the second abutting surface (320) is opposite to the first abutting surface (261), the second abutting surface (320) is parallel to the first abutting surface (261), and the second abutting surface (320) abuts against the first abutting surface (261);

the hinge (270), hinge (270) are the elastic sheet, the both ends of hinge (270) are connected respectively the back side of butt portion (260) with the back side of link (303).

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