CN115177331B - Pneumoperitoneum needle with automatic puncture success reminding function - Google Patents

Abstract

The application discloses a pneumoperitoneum needle with a puncture success automatic reminding function, which comprises a puncture tube and an air injection tube positioned in the puncture tube, wherein the end part of the puncture tube is in a spike shape, the end part of the air injection tube is hemispherical, one end of the air injection tube is provided with an air injection hole, the other end of the air injection tube is connected with an end block, a first inner cavity communicated with the air injection tube is arranged in the end block, the first inner cavity is connected with an air inlet tube, and a valve is arranged at the air inlet tube; the end part of the puncture tube, which is close to the end part block, is connected with a friction abutting block abutting against the outer side wall of the gas injection tube through a spring plate, and the spring plate is also provided with a locking bolt for locking the relative positions of the puncture tube and the gas injection tube. The pneumoperitoneum needle of the application enables doctors to more conveniently perform puncture operation.

Description

A Veress Needle with Automatic Reminder Function for Successful Puncture

Technical Field

The present application relates to the field of medical devices, and in particular to a pneumoperitoneum needle with an automatic reminder function of successful puncture.

Background Art

The pneumoperitoneum needle is a medical device for abdominal puncture, which is composed of a puncture tube and an insufflation tube. A general pneumoperitoneum needle has a spring inside. When puncturing the abdominal wall, the insufflation needle retracts into the puncture needle when encountering resistance. The tip of the puncture needle can puncture the patient's abdomen. When the puncture tube pierces the peritoneum and enters the abdominal cavity, the resistance disappears, and the insufflation tube pops out under the action of the spring, making the front end of the pneumoperitoneum needle blunt, which can avoid puncturing the abdominal organs. However, since the end of the insufflation tube is thicker, sometimes when the puncture tube is slightly punctured, the puncture port is too small and the insufflation tube is thicker. If it does not cooperate well with the spring, the insufflation tube may not pop out in time, resulting in the need to continue the puncture, and the operation of continuing the puncture may damage the patient's organs.

Summary of the invention

Purpose of the invention: This application aims to overcome the defects of the prior art and provide a pneumoperitoneum needle with an automatic reminder function of successful puncture.

Technical solution: A pneumoperitoneum needle with an automatic reminder function for successful puncture, comprising a puncture tube and an air injection tube located inside the puncture tube, wherein the end of the puncture tube is in a spike shape, and the end of the air injection tube is in a hemispherical shape, one end of the air injection tube has an air injection hole, and the other end is connected to an end block, wherein the end block has a first inner cavity connected to the air injection tube, the first inner cavity is connected to an air inlet pipe, and the air inlet pipe has a valve; the end of the puncture tube close to the end block is connected to a friction abutment block abutting the outer wall of the air injection tube through a spring sheet, and the spring sheet also has a locking bolt for locking the relative positions of the puncture tube and the air injection tube.

Furthermore, the locking bolt includes a stud and a knob fixed to the stud, and the spring sheet has a threaded hole matched with the stud; the spring sheet has a strip-shaped buffer groove.

Optionally, the strip-shaped buffer grooves may be replaced with strip-shaped notches.

Therefore, the buffer groove plays a role similar to that of the strip notch, making the spring sheet have better elasticity, driving the friction abutment block to abut against the gas injection tube, so that the gas injection tube and the puncture tube can be relatively moved only under the action of external force.

Furthermore, an anti-slip sleeve surrounding the puncture tube is fixed to the outer wall of the puncture tube; a strip-shaped limiting rib is fixed to the outer wall of the air injection tube, and the inner wall of the puncture tube has a strip-shaped limiting groove that cooperates with the limiting rib, and there are two limiting ribs and two limiting grooves, and the two correspond one to one; a side limiting plate is also fixed to the outer wall of the air injection tube, and the end of the side limiting plate can abut against one end of the puncture tube close to the end block.

This makes the puncture needle more convenient to hold, and the distance that the insufflation tube and the puncture tube can slide relative to each other is limited, thereby preventing damage to the patient's organs due to operating errors.

Furthermore, the gas injection pipe has a first strip groove, the bottom end of the first strip groove has a connecting support plate, and the top end extends to the end block, the end block is installed with a light emitting and receiving device, the connecting support plate is installed with a wedge-shaped reflection block, the wedge-shaped reflection block has a reflection slope, the inner side wall of the gas injection pipe is connected to a strip surrounding plate surrounding the first strip groove; the outer side wall of the gas injection pipe has a second strip groove, the top end of the second strip groove is closed, and the bottom end is open, a sliding plate that can slide along the second strip groove and will not fall off the second strip groove is inserted in the second strip groove, the bottom end of the sliding plate is arc-shaped, the top end of the sliding plate and the top end of the second strip groove are connected with a spring, the inner side surface of the sliding plate has a mirror reflection area, the first strip groove and the second strip groove are connected by a light-transmitting hole, the light emitted by the light emitting and receiving device can propagate in the first strip groove, be reflected by the reflection slope, then be reflected by the mirror reflection area, then be reflected by the reflection slope, and then be received by the light emitting and receiving device to measure the light intensity.

Furthermore, the first strip-shaped through groove has a strip-shaped side opening; and the angle between the reflective inclined surface and the surface connected to the support plate is 45 degrees.

Furthermore, a third strip groove is provided in the second strip groove, the bottom end of the third strip groove is open, the sliding plate covers the third strip groove to form an air permeable channel in the third strip groove, and the surrounding plate has an air permeable hole connected to the third strip groove; a second inner cavity is provided in the end block, the second inner cavity is not connected to the first inner cavity, an air pressure sensor is installed in the second inner cavity, and a connecting channel connecting the third strip groove and the second inner cavity is provided in the side wall of the gas injection pipe.

Furthermore, two of the springs are connected between the top of the sliding plate and the top of the second strip groove; the second strip groove is divided into a first part close to the end block and a second part connected to the first part and away from the end block, the side of the first part close to the circumferential surface of the gas injection pipe is closed, and the side of the second part close to the circumferential surface of the gas injection pipe is open.

Therefore, the first part of the second strip-shaped groove is closed at its outer side, so that the sliding plate can be better limited.

Furthermore, the friction abutment block is a rubber block; the outer diameter of the gas injection tube is equal to the inner diameter of the puncture tube.

Furthermore, the inner side of the sliding plate abuts against the side wall of the second strip-shaped groove away from the circumferential surface of the gas injection pipe.

Furthermore, the light-transmitting hole divides the third strip-shaped groove into two sections, and the two sections of the third strip-shaped groove are both connected to the light-transmitting hole.

Furthermore, the gas injection hole of the gas injection pipe is opposite to the second strip groove.

The limiting convex rib and the limiting groove are used to prevent the air injection tube and the puncture tube from rotating relative to each other.

Furthermore, there are two side limiting plates.

In some other embodiments, a third strip groove is provided in the second strip groove, the bottom end of the third strip groove is open, the top end of the third strip groove is flush with the top end of the second strip groove, the sliding plate blocks the third strip groove to form an air permeable passage in the third strip groove, and the surrounding plate has an air hole connected to the third strip groove; the end block has a second inner cavity, the second inner cavity is not connected to the first inner cavity, an air pressure sensor is installed in the second inner cavity, and the gas injection pipe has a connecting pipe connecting the third strip groove and the second inner cavity.

Furthermore, the connecting pipe passes through the first strip-shaped groove.

Furthermore, the connecting pipe is a metal hard pipe.

Furthermore, the top of the third strip-shaped groove is flush with the top of the second strip-shaped groove.

Furthermore, the inner side surface of the sliding plate is black except for the mirror reflection area.

Furthermore, the light emitting and receiving device includes a laser emitter and a light intensity detector.

Furthermore, the light emitting and receiving device includes a laser emitter, a semi-transparent and semi-reflective mirror and a light intensity detector.

Furthermore, the light emitted by the laser emitter can propagate in the first strip groove through the semi-transparent and semi-reflective mirror, be reflected by the reflecting bevel, then be reflected by the mirror reflection area, then be reflected by the reflecting bevel, then be reflected by the semi-transparent and semi-reflective mirror and be received by the light intensity detector.

Beneficial effects: The pneumoperitoneum needle of the present application can achieve effective puncture of the patient's abdominal cavity, and has the function of reminding the doctor during the puncture process, and can reduce damage to the patient's organs, and the reminder function is targeted at more complex situations.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of a Veress needle;

FIG2 is a schematic diagram showing the sliding plate being retracted into the puncture tube when the Veress needle is performing puncture;

FIG3 is a schematic diagram of the sliding plate extending out of the puncture tube when the puncture tube breaks through;

FIG4 is a schematic diagram of inserting the insufflation tube into the affected abdomen after successful puncture;

FIG5 is a schematic diagram of the exploded components of the Veress needle from a first viewing angle;

FIG6 is a schematic diagram of the exploded components of the Veress needle from a second viewing angle;

FIG7 is a schematic diagram of the gas injection pipe from the first perspective;

FIG8 is a schematic diagram of the gas injection tube from a second viewing angle, in which the gas injection tube is cut open for clarity;

FIG9 is a schematic diagram of the gas injection tube from a third perspective, in which the gas injection tube is cut open for clarity;

Figure 10 is a schematic diagram of a sliding plate;

FIG11 is a schematic diagram of a gas injection tube in some other embodiments;

FIG. 12 is a schematic diagram of the optical path of the optical transmitting and receiving device.

DETAILED DESCRIPTION

Figures: 1 puncture tube; 1.1 anti-slip sleeve; 1.2 spring piece; 1.3 buffer groove; 1.4 friction abutment block; 1.5 locking bolt; 1.6 limiting groove; 2 air injection pipe; 2.1 end block; 2.2 air inlet pipe; 2.3 valve; 2.4 side limiting plate; 2.5 limiting rib; 2.6 air injection hole; 2.7 second strip groove; 2.7.1 top of second strip groove; 2.8 third strip groove; 2.9 light transmission hole; 2.10 wedge-shaped reflection block; 2.11 connecting pipe; 2.12 air permeable hole; 2.13 first strip groove; 2.13.1 strip surrounding plate; 2.13.2 connecting support plate; 2.13.3 side opening of first groove; 2.14 connecting channel; 2.15 light transmitting and receiving device; 2.15.1 laser transmitter; 2.15.2 1.1.1.2 1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 1.1.7 1.1.8 1.1.9 1.2.10 1.2.11 1.2.12 1.2.13 1.2.14 1.2.15 1.2 ...

The following is a specific description in conjunction with the accompanying drawings: A pneumoperitoneum needle with an automatic reminder function for successful puncture, comprising a puncture tube 1 and an air injection tube 2 located in the puncture tube 1, wherein the end of the puncture tube 1 is in the shape of a spike, and the end of the air injection tube 2 is in the shape of a hemisphere, one end of the air injection tube 2 has an air injection hole 2.6, and the other end is connected to an end block 2.1, wherein the end block 2.1 has a first inner cavity connected to the air injection tube, the first inner cavity is connected to an air inlet pipe 2.2, and the air inlet pipe 2.2 has a valve 2.3; the end of the puncture tube 1 close to the end block 2.1 is connected to a friction abutment block 1.4 abutting the outer wall of the air injection tube 2 through a spring sheet 1.2, and the spring sheet 1.2 also has a locking bolt 1.5 for locking the relative positions of the puncture tube 1 and the air injection tube 2. The locking bolt 1.5 includes a stud and a knob fixed to the stud, and the spring sheet 1.2 has a threaded hole matched with the stud; the spring sheet 1.2 has a strip-shaped buffer groove 1.3. The outer wall of the puncture tube 1 is fixed with an anti-slip sleeve 1.1 surrounding the puncture tube 1; the outer wall of the gas injection tube 2 is fixed with a strip-shaped limiting rib 2.5, and the inner wall of the puncture tube 1 has a strip-shaped limiting groove 1.6 matched with the limiting rib 2.5, and the limiting rib and the limiting groove 1.6 are both two, and the two correspond to each other; the outer wall of the gas injection tube 2 is also fixed with a side limiting plate 2.4, and the end of the side limiting plate 2.4 can abut against one end of the puncture tube 1 close to the end block 2.1.

The gas injection pipe 2 has a first strip groove 2.13, the bottom end of the first strip groove 2.13 has a connecting support plate 2.13.2, and the top end extends to the end block, the end block 2.1 is installed with a light emitting and receiving device 2.15, the connecting support plate 2.13.2 is installed with a wedge-shaped reflection block 2.10, the wedge-shaped reflection block 2.10 has a reflection slope, the inner side wall of the gas injection pipe 2 is connected with a strip surrounding plate 2.13.1 surrounding the first strip groove; the outer side wall of the gas injection pipe 2 has a second strip groove 2.7, the top end of the second strip groove 2.7 is closed, and the bottom end is open, the second strip groove 2.7 is inserted with a sliding plate 3 that can slide along the second strip groove 2.7 and will not fall off the second strip groove, the bottom end of the sliding plate 3 is arc-shaped, the top of the sliding plate 3 and the second strip groove A spring 3.1 is connected to the top of the sliding plate 3. The inner side of the sliding plate 3 has a mirror reflection area 3.2. The first strip groove 2.13 and the second strip groove 2.7 are connected through a light-transmitting hole 2.9. The light emitted by the light emitting and receiving device 2.15 can propagate in the first strip groove 2.13, be reflected by the reflecting bevel, be reflected by the mirror reflection area 3.2, be reflected by the reflecting bevel, and finally be received by the light emitting and receiving device 2.15 to measure the light intensity.

The first strip-shaped through groove 2.13 has a strip-shaped side opening 2.13.3; the angle between the reflecting slope and the surface of the connecting support plate 2.13.2 is 45 degrees. The second strip-shaped groove 2.7 has a third strip-shaped groove 2.8, the bottom end of the third strip-shaped groove 2.8 is open, the sliding plate 3 blocks the third strip-shaped groove 2.8 to form a ventilation channel in the third strip-shaped groove 2.8, and the surrounding plate 2.13.1 has a ventilation hole 2.12 connected to the third strip-shaped groove 2.8; the end block 2.1 has a second inner cavity, the second inner cavity is not connected to the first inner cavity, and an air pressure sensor is installed in the second inner cavity. The side wall of the gas injection pipe 2 has a connecting channel connecting the third strip-shaped groove 2.8 and the second inner cavity. Two springs 3.1 are connected between the top of the sliding plate 3 and the top of the second strip groove 2.7; the second strip groove 2.7 is divided into a first part close to the end block 2.1 and a second part connected to the first part and away from the end block 2.1, the side of the first part close to the circumferential surface of the gas injection tube 2 is closed, and the side of the second part close to the circumferential surface of the gas injection tube 2 is open. The friction abutment block 1.4 is a rubber block; the outer diameter of the gas injection tube 2 is equal to the inner diameter of the puncture tube 1. The inner side of the sliding plate 3 abuts against the side wall of the second strip groove 2.7 away from the circumferential surface of the gas injection tube. The light-transmitting hole 2.9 divides the third strip groove 2.7 into two sections, and the two sections of the third strip groove 2.8 are both connected to the light-transmitting hole 2.9.

As shown in the figure, the pneumoperitoneum needle of the present application mainly implements puncture of the abdomen by a puncture tube, and implements gas injection by a gas injection tube. Detection and reminder are implemented by a light emitting and receiving device (the detection optical path of the light emitting and receiving device is shown in Figure 12) and a pressure sensor.

During the specific operation, first, as shown in Figure 1-2, the relative positions of the gas injection tube and the puncture tube are locked, and the end of the gas injection tube is located in the puncture tube, so as to facilitate the puncture of the sharp end of the puncture tube. During the puncture process, as shown in Figure 1-2, the sliding plate will compress the spring and shrink above the sharp end of the puncture tube due to the obstruction of the human body's flesh, and at this time, the light of the light emitting and receiving device will hit the mirror reflection area, so that the reflected light signal is strong. When the puncture tube breaks through, at this time, because the sliding plate is relatively thin (its end is arc-shaped and will not damage human tissue), it will achieve almost simultaneous breakthrough with the sharp end of the puncture tube, and under the action of the spring, as shown in Figure 3, it extends from the bottom of the puncture tube and is inserted into the abdomen. At this time, due to the downward movement of the sliding plate, the light of the light emitting and receiving device cannot hit the mirror reflection area, so that the light intensity measurement value is greatly reduced, thereby reminding the user that the puncture has been achieved (the air pressure sensor and the light emitting and receiving device are both connected to corresponding prompt units, such as displays, etc.). At this time, loosen the locking bolt (when the locking bolt is locked, the gas injection tube and the puncture tube cannot slide against each other; when the locking bolt is loosened, due to the existence of the friction abutment block, a certain external force is also required to achieve the relative sliding of the puncture tube and the gas injection tube), move the gas injection tube slightly downward, and perform gas injection (the air inlet pipe is connected to the external air supply unit). At this time, if the measured value of the air pressure sensor changes very little, it means that the gas injection tube has been connected to the patient's abdominal cavity and gas injection has been successfully achieved. If the air pressure of the air pressure sensor rises rapidly during the initial gas injection, but after the gas injection is stopped, the measured value decreases rapidly, indicating that the gas injection hole is not connected to the patient's abdominal cavity, but is blocked by the abdominal meat, but the bottom end of the third groove is already connected to the patient's abdominal cavity. Since the third groove is small, there is no time to release the gas at the initial stage of gas injection, resulting in an increase in air pressure. However, after the gas injection is stopped, the accumulated gas can be slowly released from the third groove, so that the air pressure measurement value decreases. At this time, the puncture is still successful. You only need to move the gas injection tube downward appropriately so that the gas injection hole is connected to the patient's abdominal cavity and gas can be injected again. If the air pressure measurement value at the beginning of gas injection increases, and the air pressure does not decrease for a long time after stopping gas injection (the probability of this happening is small), it means that the third groove is not connected to the patient's abdominal cavity, indicating that the puncture is not completely successful, and the sliding plate is just misplaced due to other reasons. At this time, it is necessary to check whether the surgical instrument is normal, and check whether the patient's body is different from that of ordinary people, and then re-perform the puncture operation.

Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims (7)

1. The pneumoperitoneum needle with the automatic puncture success reminding function is characterized by comprising a puncture tube and an air injection tube positioned in the puncture tube, wherein the end part of the puncture tube is in a spike shape, the end part of the air injection tube is hemispherical, one end of the air injection tube is provided with an air injection hole, the other end of the air injection tube is connected with an end block, a first inner cavity communicated with the air injection tube is arranged in the end block, the first inner cavity is connected with an air inlet tube, and a valve is arranged at the air inlet tube; the end part of the puncture tube, which is close to the end part block, is connected with a friction abutting block capable of abutting against the outer side wall of the gas injection tube through a spring plate, and a locking bolt for locking the relative positions of the puncture tube and the gas injection tube is also arranged at the spring plate; the gas injection pipe is provided with a first strip-shaped groove, the bottom end of the first strip-shaped groove is provided with a connecting support plate, the top end of the first strip-shaped groove extends to the end block, the end block is provided with a light emitting and receiving device, the connecting support plate is provided with a wedge-shaped reflecting block, the wedge-shaped reflecting block is provided with a reflecting inclined plane, and the inner side wall of the gas injection pipe is connected with a strip-shaped enclosing plate surrounding the first strip-shaped groove; the outer side wall of the gas injection pipe is provided with a second strip-shaped groove, the top end of the second strip-shaped groove is closed, the bottom end of the second strip-shaped groove is open, a sliding plate which can slide along the second strip-shaped groove and cannot fall off from the second strip-shaped groove is inserted into the second strip-shaped groove, the bottom end of the sliding plate is arc-shaped, the top end of the sliding plate and the top end of the second strip-shaped groove are connected with springs, the inner side surface of the sliding plate is provided with a specular reflection area, the first strip-shaped groove and the second strip-shaped groove are communicated through a light transmission hole, light rays emitted by the light emitting and receiving device can propagate in the first strip-shaped groove, are reflected by the reflection inclined surface, reflected by the specular reflection area, reflected by the reflection inclined surface and received by the light emitting and receiving device, and the light intensity is measured; the first strip-shaped groove is provided with a strip-shaped side opening; the included angle between the reflecting inclined plane and the surface of the connecting support plate is 45 degrees; the second strip-shaped groove is internally provided with a third strip-shaped groove, the bottom end of the third strip-shaped groove is open, the sliding plate shields the third strip-shaped groove from forming a ventilation channel in the third strip-shaped groove, and the surrounding plate is provided with ventilation holes communicated with the third strip-shaped groove; the end block is internally provided with a second inner cavity which is not communicated with the first inner cavity, the second inner cavity is internally provided with a gas pressure sensor, and the side wall of the gas injection pipe is internally provided with a connecting channel which is communicated with a third strip-shaped groove and the second inner cavity.

2. The pneumoperitoneum needle with the automatic puncture success reminding function according to claim 1, wherein the locking bolt comprises a stud and a knob fixed with the stud, and a threaded hole matched with the stud is formed in the elastic piece; the elastic sheet is provided with a strip-shaped buffer groove.

3. The pneumoperitoneum needle with automatic puncture success reminding function according to claim 1, wherein an anti-slip sleeve surrounding the puncture tube is fixed on the outer side wall of the puncture tube; the outer side wall of the gas injection pipe is fixedly provided with a strip-shaped limiting convex rib, the inner side wall of the puncture pipe is provided with a strip-shaped limiting groove matched with the limiting convex rib, and the number of the limiting convex ribs and the limiting grooves are two and are in one-to-one correspondence; the lateral wall department of annotating the trachea still is fixed with the side limiting plate, the tip of side limiting plate can the butt puncture pipe be close to the one end of tip piece.

4. The pneumoperitoneum needle with automatic reminding function of successful puncture according to claim 1, wherein two springs are connected between the top end of the sliding plate and the top end of the second bar-shaped groove; the second strip-shaped groove is divided into a first part close to the end block and a second part connected with the first part and far away from the end block, the side face of the first part close to the circumferential surface of the gas injection pipe is closed, and the side face of the second part close to the circumferential surface of the gas injection pipe is opened.

5. The pneumoperitoneum needle with automatic puncture success reminding function according to claim 1, wherein the friction abutting block is a rubber block; the outer diameter of the gas injection pipe is equal to the inner diameter of the puncture pipe.

6. The pneumoperitoneum needle with automatic puncture reminding function according to claim 1, wherein the inner side of the sliding plate abuts against the side wall of the second strip-shaped groove far away from the circumferential surface of the gas injection tube.

7. The pneumoperitoneum needle with automatic puncture reminding function according to claim 1, wherein the light hole divides the third strip-shaped groove into two sections, and the two sections of the third strip-shaped groove are communicated with the light hole.