CN214761379U

CN214761379U - Double-sleeve puncture needle capable of bending at angle

Info

Publication number: CN214761379U
Application number: CN202120134760.7U
Authority: CN
Inventors: 肖帅; 黄秋林; 方敏; 唐振; 许云华; 唐蓉; 张益玮; 黄佳; 曹辉
Original assignee: First Affiliated Hospital of University of South China
Current assignee: First Affiliated Hospital of University of South China
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-11-19
Anticipated expiration: 2031-01-19

Abstract

A puncture needle head with a double-sleeve and a bendable angle comprises a bent pipe, a protective pipe and a puncture needle head, wherein the bent pipe comprises a first bent pipe and a second bent pipe, an extension plate is arranged at the end part of the first bent pipe, a pin shaft and a clamping strip are fixed on the extension plate, one end of the second bent pipe is fixedly connected with a connector through threads, a fixed column is fixed on the connector, a through hole is formed in the middle of the fixed column, a through hole and a plurality of clamping grooves are formed in the fixed column, the clamping grooves are coaxially arranged, the sizes of the clamping grooves are the same, the pin shaft penetrates into the through hole, the clamping strip is positioned in one of the clamping grooves, a strip-shaped groove is formed in the other end of the second bent pipe, the puncture needle head is slidably connected in the second bent pipe, the puncture needle head comprises a puncture needle head main body, a hose is connected on the puncture needle head main body, and the puncture needle head can avoid accidental injury, safer, can adjust the angle of puncture needle head, and make the puncture needle head more stable.

Description

Double-sleeve puncture needle capable of bending at angle

Technical Field

The utility model relates to a puncture needle head especially relates to a puncture needle head of double sleeve flexible angle.

Background

In the conventional medical service, the blood sample collection and test is a common behavior; blood sampling assay technology is quite mature at present, but at present, most of the blood sampling assay technology is minimally invasive surgery, so that blood vessel puncture cannot be directly carried out by holding an injector like the previous open surgery, the main body of a puncture needle is in vitro, the needle head is in vivo and is inserted vertically, at worst, the needle head of the current puncture outfit is thick, the blood vessels of the internal organs such as portal vein and mesenteric vascular wall which are frequently punctured by people are weak, the intravenous pressure is high, the blood vessels are easy to penetrate through to damage tissues below the blood vessels during puncture, and the blood vessels are directly damaged by the thick needle head to cause hemorrhage.

SUMMERY OF THE UTILITY MODEL

The utility model provides a puncture needle head with double sleeves and bendable angles, which comprises a bent pipe, a protection pipe and a puncture needle head, wherein the bent pipe comprises a first bent pipe and a second bent pipe, the end part of the first bent pipe is provided with an extension plate, the extension plate is fixedly provided with a pin shaft and a clamping strip, one end of the second bent pipe is fixedly connected with a connector through screw threads, the connector is fixedly provided with a fixed column, the middle part of the fixed column is provided with a through hole, the fixed column is provided with a through hole and a plurality of clamping grooves, the clamping grooves are coaxially arranged, the sizes of the clamping grooves are the same, the pin shaft penetrates into the through hole, the clamping strip is positioned in one of the clamping grooves, the other end of the second bent pipe is provided with a strip-shaped groove, the puncture needle head is slidably connected in the second bent pipe, the puncture needle head comprises a puncture needle head main body, and the puncture needle head body is connected with a hose, the hose is worn out through hole and first crooked pipe, puncture needle main part external fixation has the lantern ring, be fixed with the spacing limit that extends on the lantern ring, the spacing limit that extends is worn out the bar groove, spacing being equipped with first screw thread on extending the limit, puncture needle main part one end is passed through spring and connector fixed connection, the crooked outside of tubes of second is equipped with the second screw thread, the inside third screw thread and the fourth screw thread of being equipped with of protection tube, third screw thread and fourth screw thread are reverse, and the screw thread interval of fourth screw thread is greater than the screw thread interval of third screw thread, third screw thread and second screw thread spiro union, fourth screw thread and first screw thread spiro union.

As a further improvement of the above scheme:

preferably, a plurality of strip-shaped grooves are formed in the other end of the second bending pipe.

Preferably, a plurality of the strip-shaped grooves are uniformly distributed.

Preferably, the strip-shaped groove is arranged along the axial direction of the second bending pipe.

Preferably, the card strip is a rectangular strip.

Preferably, both ends all are equipped with the third screw thread in the protection tube, the fourth screw thread is located between two third screw threads.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the blood sampling device is mainly suitable for blood sampling of visceral vessels under a laparoscope, the extending length of the needle head can be adjusted through rotating the protection tube, so that the distance between the operating handle and the needle head is adjusted, the operating habits of different people can be met, and the puncture needle head can be retracted into the second bending tube through rotating the protection tube, so that the accidental injury of the needle head can be avoided, and the blood sampling device is safer;

1. the angle of the puncture needle head can be adjusted by adjusting the angle of the second bending pipe;

2. and puncture syringe needle one end passes through spring and connector fixed connection, and when the protective sheath removed to first crooked pipe direction, the spring had a power of keeping away from first crooked pipe to the puncture syringe needle, and elasticity and the screw thread through the spring are spacing to make the puncture syringe needle more stable, make use the puncture syringe needle can not enlarge the wound owing to the removal of puncture syringe needle.

Drawings

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

FIG. 2 is a structural view of the puncture needle according to the present invention after the puncture needle is screwed out;

FIG. 3 is a structural diagram of the bent tube of the present invention after bending;

fig. 4 is a schematic diagram of the explosion structure of the present invention;

fig. 5 is a cut-away view of the protection tube of the present invention.

In the figure: 1. a first bending tube; 101. an extension plate; 102. clamping the strip; 103. a pin shaft; 2. Fixing a column; 201. a card slot; 202. a through hole; 3. a hose; 4. a connector; 5. a second bending tube; 501. a strip-shaped groove; 502. a second thread; 6. protecting the tube; 601. a third thread; 602. a fourth thread; 7. a puncture needle head; 701. a collar; 702. a first thread; 703. limiting and extending edges; 8. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-5, a double-sleeve puncture needle with a bendable angle comprises a bent tube, a protection tube 6 and a puncture needle 7, wherein the bent tube comprises a first bent tube 1 and a second bent tube 5, an extension plate 101 is arranged at the end of the first bent tube 1, a pin shaft 103 and a clamping strip 102 are fixed on the extension plate 101, one end of the second bent tube 5 is fixedly connected with a connector 4 through a thread, a fixing column 2 is fixed on the connector 4, a through hole is arranged in the middle of the fixing column 2, a through hole 202 and a plurality of clamping grooves 201 are arranged on the fixing column 2, the clamping grooves 201 are coaxially arranged, the clamping grooves 201 are the same in size, the pin shaft 103 penetrates through the through hole 202, the clamping strip 102 is positioned in one of the clamping grooves 201, a strip-shaped groove 501 is arranged at the other end of the second bent tube 5, and the puncture needle 7 is slidably connected in the second bent tube 5, the utility model discloses a flexible pipe, including puncture needle 7, puncture needle 7 includes puncture needle 7 main part, be connected with hose 3 in the puncture needle main part, through hole and first crooked pipe 1 are worn to establish by hose 3, puncture needle 7 main part external fixation has lantern ring 701, be fixed with spacing flange 703 on the lantern ring 701, spacing flange 703 is worn to establish bar groove 501, be equipped with first screw thread 702 on the spacing flange 703, puncture needle 7 main part one end is through spring 8 and connector 4 fixed connection, crooked pipe 5 of second is equipped with second screw thread 502 outward, the inside third screw thread 601 and the fourth screw thread 602 that is equipped with of protection tube 6, third screw thread 601 and fourth screw thread 602 are reverse, and the screw thread interval of fourth screw thread 602 is greater than the screw thread interval of third screw thread 601, third screw thread 601 and second screw thread 502 spiro union, fourth screw thread 602 and first screw thread 702 spiro union.

A plurality of bar-shaped grooves 501 are formed in the other end of the second bending pipe 5.

The plurality of stripe-shaped grooves 501 are uniformly distributed.

The strip-shaped groove 501 is arranged along the axial direction of the second bending pipe 5.

The card strip 102 is a rectangular strip.

Third threads 601 are arranged at two ends in the protection pipe 6, and the fourth threads 602 are arranged between the two third threads 601.

The utility model discloses a theory of operation does: the first bending pipe 1 and the second bending pipe 5 are rotatably connected through the pin shaft 103 and the through hole 202, so that the first bending pipe 1 and the second bending pipe 5 can rotate by a certain angle, when the clamping strip 102 is clamped into the clamping groove 201, the clamping strip 102 is matched with the clamping groove 201 to position the first bending pipe 1 and the second bending pipe 5, the angle can be continuously rotated only when the clamping strip 102 is rotated out of the clamping groove 201 due to large rotating force, and the angle of the puncture needle head 7 can be effectively adjusted by adjusting the angles of the first bending pipe 1 and the second bending pipe 5;

third threads 601 in the protection tube 6 are in threaded connection with second threads 502 outside the second bending tube 5, the protection tube 6 can be moved along the second bending tube 5 by rotating the protection tube 6, fourth threads 602 between the third threads 601 are reversed, and the thread pitch of the fourth threads 602 is larger than that of the third threads 601, so that the puncture needle 7 can move in the opposite direction of the protection tube 6 during the rotation of the protection tube 6, when the protection tube 6 moves in the direction of the first bending tube 1, the puncture needle 7 can move in the direction away from the first bending tube 1, so that the puncture needle 7 extends out of the second bending tube 5, and when the protection tube 6 moves in the direction away from the first bending tube 1, the puncture needle 7 can move in the direction of the first bending tube 1, so that the puncture needle 7 retracts into the second bending tube 5;

and puncture needle 7 one end passes through spring 8 and connector 4 fixed connection, and when the protective sheath removed to first crooked pipe 1 direction, spring 8 had a power of keeping away from first crooked pipe 1 to puncture needle 7, and elasticity and the screw thread through spring 8 are spacing to make puncture needle 7 more stable, make use puncture needle 7 can not enlarge the wound owing to the removal of puncture needle 7.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a two sleeve bendable angle's puncture needle head which characterized in that: the puncture needle comprises a bent tube, a protection tube and a puncture needle head, wherein the bent tube comprises a first bent tube and a second bent tube, an extension plate is arranged at the end of the first bent tube, a pin shaft and a clamping strip are fixed on the extension plate, one end of the second bent tube is fixedly connected with a connector through threads, a fixing column is fixed on the connector, a through hole is formed in the middle of the fixing column, a through hole and a plurality of clamping grooves are formed in the fixing column, the clamping grooves are coaxially arranged and have the same size, the pin shaft penetrates into the through hole, the clamping strip is positioned in one of the clamping grooves, a strip-shaped groove is formed in the other end of the second bent tube, the puncture needle head is slidably connected in the second bent tube and comprises a puncture needle head main body, a hose is connected to the puncture needle head main body, the hose penetrates through the through hole and the first bent tube, and a lantern ring is fixed outside the puncture needle head main body, the novel puncture needle is characterized in that a limiting extending edge is fixed on the lantern ring, the limiting extending edge penetrates through the strip-shaped groove, a first thread is arranged on the limiting extending edge, one end of the puncture needle body is fixedly connected with the connector through a spring, a second thread is arranged outside the second bending tube, a third thread and a fourth thread are arranged inside the protective tube, the third thread and the fourth thread are opposite, the thread distance of the fourth thread is larger than that of the third thread, the third thread and the second thread are in threaded connection, and the fourth thread and the first thread are in threaded connection.

2. A dual barrel bendable angle puncture needle according to claim 1, wherein: and a plurality of strip-shaped grooves are formed in the other end of the second bending pipe.

3. A dual barrel bendable angle puncture needle according to claim 1, wherein: the strip-shaped grooves are uniformly distributed.

4. A dual barrel bendable angle puncture needle according to claim 3, wherein: the strip-shaped groove is arranged along the axial direction of the second bending pipe.

5. A dual barrel bendable angle puncture needle according to claim 4, wherein: the clamping strip is a rectangular strip.

6. A dual barrel bendable angle puncture needle according to claim 1, wherein: and third threads are arranged at two ends in the protective pipe, and the fourth threads are arranged between the two third threads.