CN220495061U - Puncture needle sleeve structure - Google Patents

Abstract

The utility model provides a puncture needle sleeve structure, and belongs to the technical field of puncture needles. The utility model comprises a tube body and a base fixedly connected to the top end of the tube body, wherein a puncture cavity is formed in the tube body and the base, an annular cavity is formed in the tube body, a plurality of grooves communicated with the interior of the annular cavity are formed in the outer side wall of the tube body, an elastic membrane for covering the grooves is fixedly connected to the inner wall of the grooves, a fixing seat is fixedly connected to the outer side wall of the base, a fixing groove is formed in the side wall of the fixing seat, an air bag is arranged in the fixing groove, the interior of the air bag is communicated with the interior of the annular cavity through a guide pipe, and a pressing piece for compressing the air bag is further arranged on the fixing seat. According to the utility model, after the elastic membrane is inflated after the elastic membrane is penetrated into subcutaneous tissue of a human body, the resistance of movement of the tube body can be increased, the possibility of slipping of the tube body is effectively reduced, suture fixation is not needed, and the surgical auxiliary wound is reduced.

Description

Puncture needle sleeve structure

Technical Field

The utility model relates to the field of puncture needles, in particular to a puncture needle sleeve structure.

Background

In the minimally invasive endoscopic surgery, a device called a cannula puncture needle is used, and the device is used for puncturing and providing a passage for surgical instruments and endoscopes, but in the actual use process, as the outer wall of the puncture needle cannula is smooth, and the laparoscopic instruments are repeatedly moved in and out, the puncture needle cannula is always pushed out or loosened and then is carried out along with the instruments, so that the puncture cannula needs to be repeatedly punctured, the puncture pair is damaged, and the surgical time is wasted.

In view of this, it is common to fix or add a rubber ring to the cannula with a suture and stitch the rubber ring to the skin around the patient's puncture, which is cumbersome to handle and increases the trauma to the patient.

How to develop a puncture needle cannula structure to improve these problems becomes a urgent problem to be solved by those skilled in the art.

Disclosure of Invention

In order to make up for the defects, the utility model provides a puncture needle sleeve structure, which aims to solve the problems that the outer wall of the puncture needle sleeve is smooth and is easy to slip off a human body in the using process after puncture.

The utility model is realized in the following way:

the utility model provides a puncture needle sleeve structure which comprises a tube body and a base fixedly connected to the top end of the tube body, wherein a puncture cavity is formed in the tube body and the inside of the base, an annular cavity is formed in the tube body, a plurality of grooves communicated with the inside of the annular cavity are formed in the outer side wall of the tube body, an elastic membrane for covering the grooves is fixedly connected to the inner wall of the grooves, a fixing seat is fixedly connected to the outer side wall of the base, a fixing groove is formed in the side wall of the fixing seat, an air bag is arranged in the fixing groove, the inside of the air bag is communicated with the inside of the annular cavity through a guide pipe, and a pressing piece for compressing the air bag is further arranged on the fixing seat.

Preferably, the fastening piece comprises a pressing plate rotatably connected to the inner side wall of the fixing groove through a pin shaft, and the pressing plate is located on one side, away from the base, of the air bag.

Preferably, the buckle for fixing the pressing plate is fixedly arranged on the inner side wall of the fixing groove, the pressing plate is fixed by the buckle, so that the compression state of the pressing plate to the air bag is maintained, the air bag is prevented from automatically rebounding to cause the natural shrinkage of the expanded elastic film, and the operation is released.

Preferably, the plurality of grooves are uniformly distributed along the axial direction of the pipe body.

Preferably, the conduit is disposed inside the base.

Preferably, the bottom of body is provided with the chamfer on inclined plane, and the setting of chamfer on inclined plane makes the bottom of body be the toper setting, increases the sharp degree of body bottom, and when the body puncture human skin, the chamfer on inclined plane can reduce the resistance when puncture.

The beneficial effects of the utility model are as follows: through the cooperation between body, annular chamber, recess, elastic membrane, fixing base, gasbag, pipe and the fastener, the body is after penetrating human subcutaneous tissue, through pressing the clamp plate, compress the gasbag, force the inside gas of gasbag to be discharged into annular chamber in, can make the elastic membrane outward expansion protrusion of connection on the recess inner wall for there are a plurality of bulge point body outer wall, bulge point and human subcutaneous tissue extrusion contact, increased the resistance that the body removed, effectively reduced the possibility of body slippage, need not to carry out the suture fixed, reduce the vice wound of operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a structure of a cannula of a puncture needle according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an air bag of a cannula structure of a puncture needle according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a lancet cannula structure provided in accordance with an embodiment of the present utility model;

FIG. 4 is an enlarged view of portion A of FIG. 3 of a needle cannula configuration according to an embodiment of the present utility model;

fig. 5 is a schematic view showing an elastic membrane of a puncture needle cannula structure according to an embodiment of the present utility model in an expanded state.

In the figure: 1. a tube body; 2. a base; 3. a puncture cavity; 4. an annular cavity; 5. a groove; 6. an elastic film; 7. a fixing seat; 8. a fixing groove; 9. an air bag; 10. a conduit; 11. a pressing plate; 12. a pin shaft; 13. a buckle; 14. chamfering the inclined plane.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-3, a puncture needle sleeve structure comprises a tube body 1 and a base 2 fixedly connected to the top end of the tube body 1, wherein a puncture cavity 3 is formed in the tube body 1 and the base 2. The puncture needle iron core can puncture human tissue through the puncture cavity 3.

Referring to fig. 1-5, an annular cavity 4 is formed in the pipe body 1, a plurality of grooves 5 communicated with the interior of the annular cavity 4 are formed in the outer side wall of the pipe body 1, and the grooves 5 are uniformly distributed along the axial direction of the pipe body 1. Fixedly connected with is used for covering elastic membrane 6 (elastic membrane 6 and the inner wall sealing connection all around of recess 5) of recess 5 on the inner wall of recess 5, fixedly connected with fixing base 7 on the lateral wall of base 2, has seted up fixed slot 8 on the lateral wall of fixing base 7, and the inside of fixed slot 8 is provided with gasbag 9, and the inside of gasbag 9 is linked together with the inside of annular chamber 4 through pipe 10, and pipe 10 sets up the inside at base 2. The fixing seat 7 is also provided with a fastening piece for compressing the air bag 9. The fastening piece comprises a pressing plate 11 which is rotatably connected to the inner side wall of the fixed groove 8 through a pin shaft 12, and the pressing plate 11 is positioned on one side of the air bag 9 away from the base 2. Through compressing gasbag 9, can be with gasbag 9 inside gaseous impressing into annular chamber 4 through pipe 10, under the effect of atmospheric pressure, further make the elastic membrane 6 in the recess 5 outwards expand the protrusion, after pipe body 1 pierces human subcutaneous tissue, increase the resistance of pipe body 1 outer wall and the relative motion of human subcutaneous tissue, reduce the possibility of pipe body 1 later stage slippage.

Referring to fig. 1-3, the bottom end of the tube body 1 is provided with a beveled chamfer 14. The setting of inclined plane chamfer 14 makes the bottom of body 1 be the toper setting, and the bottom diameter is less than the upper end diameter, increases the sharp degree of body 1 bottom, and when body 1 puncture human skin, inclined plane chamfer 14 can reduce the resistance when puncture, makes body 1 puncture human subcutaneous tissue more easily.

Referring to fig. 1 to 3 and 5, a buckle 13 for fixing the pressing plate 11 is fixedly provided on the inner sidewall of the fixing groove 8. When the pressing plate 11 is pressed to compress the air bag 9, the pressing plate 11 can be fixed through the buckle 13, so that the compression state of the pressing plate 11 to the air bag 9 is maintained, the air bag 9 is prevented from automatically rebounding to cause the expanded elastic membrane 6 to naturally shrink, the pressing plate 11 is not required to be pressed all the time by manpower, and the operation is released.

The buckle 13 may be, but not limited to, a dot-shaped protrusion as shown in the drawings, or may be a pin or a screw to fix the pressing plate 11.

The operating principle of the puncture needle sleeve structure is as follows: when the tube body 1 is penetrated into the skin, the elastic membrane 6 is in a contracted state, the surface of the tube body 1 is not bulged, and the penetration mode of the tube body 1 is not abnormal with that of a normal puncture needle sleeve. After the tube body 1 penetrates into human tissue, the pressing plate 11 is pressed to compress the air bag 9, so that the air inside the air bag 9 is forced to be discharged into the annular cavity 4.

Because the inside of recess 5 is linked together with the inside of annular chamber 4, under the effect of atmospheric pressure, can make the elastic membrane 6 that connects on recess 5 inner wall outwards expand the protrusion (as shown in fig. 5) for there are a plurality of bulge points that are formed by protruding elastic membrane 6 on body 1 outer wall, and bulge point and human subcutaneous tissue extrusion contact, the resistance that can increase body 1 and remove, thereby effectively reduce the possibility of body 1 slippage, and body 1's fixed mode is simple swift and has not vice wound, and is comparatively practical.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The utility model provides a puncture needle sleeve structure, includes body (1) and fixed connection base (2) on body (1) top, puncture chamber (3) have been offered jointly to the inside of body (1) and base (2), a serial communication port, annular chamber (4) have been offered to the inside lateral wall of body (1), offer on the lateral wall of body (1) a plurality of recess (5) that are linked together with annular chamber (4) inside, fixedly connected with is used for covering elastic membrane (6) of recess (5) on the inner wall of recess (5), fixedly connected with fixing base (7) on the lateral wall of base (2), fixed slot (8) have been offered on the lateral wall of fixing base (7), the inside of fixed slot (8) is provided with gasbag (9), the inside of gasbag (9) is linked together with the inside of annular chamber (4) through pipe (10), still be provided with the fastener that is used for compressing gasbag (9) on fixing base (7).

2. A puncture needle cannula arrangement according to claim 1, characterized in that the fastening means comprise a pressure plate (11) rotatably connected to the inner side wall of the holding groove (8) by means of a pin (12), which pressure plate (11) is located at the side of the balloon (9) remote from the base (2).

3. A puncture needle cannula structure according to claim 2, characterized in that the inner side wall of the fixing groove (8) is fixedly provided with a buckle (13) for fixing the pressing plate (11).

4. A needle cannula construction according to claim 1, characterized in that a plurality of said grooves (5) are evenly distributed along the axial direction of the tube body (1).

5. A needle cannula arrangement according to claim 1, characterized in that the catheter (10) is arranged inside the base (2).

6. A puncture needle cannula structure according to claim 1, characterized in that the bottom end of the tube body (1) is provided with a bevel chamfer (14).