CN112842404B - Puncture needle for urological department - Google Patents

Abstract

The invention discloses a puncture needle for urology department, which is characterized in that an outer injection tube is arranged in the middle of one end of an outer sleeve, the middle of one end of the outer sleeve protrudes towards the direction of the outer injection tube, a pair of support plates are hinged to one end of the outer sleeve through a connecting shaft and are arc-shaped plates, a plurality of through holes are axially formed in the outer wall of the outer injection tube and penetrate through the outer injection tube, one end of an inner rotating core is arranged in the outer sleeve, the middle of one end of the inner rotating core protrudes towards the direction of the outer injection tube and is attached to the outer sleeve, a plurality of guide rings are axially arranged on the outer wall of the inner rotating core, and a plurality of guide grooves corresponding to the guide rings are formed in the inner wall of the outer sleeve.

Description

A puncture needle for urology

technical field

The invention relates to a puncture needle for urology, relates to a puncture needle capable of extracting human tissue fluid, and belongs to the field of medical instruments. In particular, it relates to a 90-degree rotation of the inner rotor core and the ball, and cooperates with a set of through holes on the outer injection tube and four liquid storage channels inside the inner rotor core to extract various human tissue fluids without multiple punctures. Avoid puncture needles that cause wound enlargement by repeated punctures.

Background technique

The puncture needle is a medical device for sampling and injecting tissue from various organs such as the kidney, liver, lung, breast, thyroid, prostate, pancreas, testis, uterus, ovary, and body surface in minimally invasive surgery. The function of the needle is single. When the puncture needle is used to extract the interstitial fluid, the injection of the drug cannot be performed at the same time, and it needs to be replaced back and forth. pain.

The notification number CN111904563A discloses a tumor puncture needle, which includes a puncture needle tube and a needle barrel, a support rod is fixedly sleeved on the outer surface of the needle barrel, and a sealing cover is fixedly embedded on the surface of one end of the needle barrel. The inner movable connection of the syringe is equipped with a piston rod, one end of the piston rod is fixedly connected with a handle, the surface of the handle is fixedly connected with a collar, and the other end of the syringe is fixedly connected with an infusion plate, The inside of the syringe is fixedly connected with a puncture needle tube, the surface of the syringe is fixedly connected with a liquid collection pipe, and the inside of the syringe is fixedly sleeved and installed with a stop ring on the surface of the piston rod. The puncture needle Although the extraction of interstitial fluid and the injection of medicament can be performed at the same time, the user needs to use another set of injection tubes for injection with the other hand when performing medicament injection, which is cumbersome and inconvenient to operate.

Contents of the invention

In order to improve the above situation, a urological puncture needle of the present invention provides a 90° rotation of the inner rotating core and the ball, and cooperates with a group of through holes on the outer injection tube and four liquid storages inside the inner rotating core. The channel extracts a variety of human tissue fluids without multiple punctures, avoiding puncture needles that cause wound expansion due to repeated punctures.

A puncture needle for urology of the present invention is realized in the following way: a puncture needle for urology of the present invention is composed of a support device, a main body steering device and a limit device, and the support device is composed of an outer sleeve, a support plate, an outer injection tube, a through The outer injection tube is placed in the middle of one end of the outer sleeve, and the middle of one end of the outer sleeve protrudes toward the direction of the outer injection tube. A pair of support plates are hinged and placed on one end of the outer sleeve through the connecting shaft. The support plate is an arc-shaped plate, and the outer wall of the outer injection pipe is provided with a plurality of through holes in the axial direction, and the through holes run through the outer injection pipe. One end of the inner rotating core is placed inside the outer casing, and the middle part of one end of the inner rotating core protrudes toward the direction of the outer injection pipe. The outer wall of the inner rotating core is equipped with a plurality of guide rings in the axial direction, and the inner wall of the outer sleeve is provided with a plurality of guide grooves corresponding to the guide rings. The number of the guide rings There are at least three. The inner injection tube is placed inside the outer injection tube and connected to the inner rotor core. There are four liquid storage channels at equal angles on the inner rotor core. The liquid storage channels extend along the axial direction of the inner rotor core. And correspondingly extend to the swivel, one end of the push rod is placed inside the liquid storage channel, the piston is placed on one end of the push rod, the other end of the push rod extends through the swivel to the outside of the outer casing, and the pressure plate is placed on the other side of the push rod On one end, there is an injection channel corresponding to the liquid storage channel on one end surface of the inner rotating core, the injection channel extends through the inner rotating core to the end of the inner injection tube, and the swivel is placed on the other end of the inner rotating core , and is located outside the outer sleeve, the limit ring frame is placed on the other end of the outer sleeve, and the corresponding sleeve is placed on the swivel, the limit ring frame is provided with a relief groove, and the limit ring frame is A pair of finger collars are provided, and the limit device is composed of a card ball, a spring, a main limit groove and an auxiliary limit groove. There is an auxiliary limiting groove corresponding to the main limiting groove. The card ball is placed inside the auxiliary limiting groove and is correspondingly engaged with the main limiting groove. One end of the spring is placed on the card ball, and the other end of the spring is placed on the On the groove wall of the auxiliary limiting groove, the main limiting groove is an arc-shaped groove.

Beneficial effect

1. It has multiple functions, and can simultaneously extract interstitial fluid and inject multiple groups of different medicines to avoid unnecessary pain caused by repeated punctures.

2. It can provide stable support for body parts of different shapes to ensure the stability of puncture and easy operation.

Three, the structure is simple, convenient and practical.

Four, low cost, easy to promote.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of a urology puncture needle of the present invention;

Fig. 2 is a structural schematic diagram of a puncture needle for urology of the present invention;

Fig. 3 is a schematic diagram of the structure of the inner rotating core of a urological puncture needle according to the present invention, which only shows the structure of the connection between the inner rotating core and the inner sleeve;

Fig. 4 is a structural schematic diagram of a puncture needle outer sleeve for urology of the present invention;

Fig. 5 is a schematic structural view of the inner cannula of a urological puncture needle of the present invention;

In the attached picture

Among them are: pressure plate (1), push rod (2), swivel (3), finger collar (4), outer sleeve (5), support plate (6), outer injection tube (7), through hole (8) ), connecting shaft (9), limit ring frame (10), inner injection tube (11), liquid storage channel (12), inner rotor core (13), guide ring (14), piston (15), injection channel (16), snap ball (17), spring (18), main limit slot (19), auxiliary limit slot (20)

Detailed ways:

A puncture needle for urology of the present invention is achieved in the following way: a puncture needle for urology of the present invention is composed of a support device, a main body steering device and a limit device, and the support device is composed of an outer sleeve (5), a support plate (6) , an outer injection tube (7), a through hole (8) and a connecting shaft (9), the outer injection tube (7) is placed in the middle of one end of the outer casing (5), and the middle of one end of the outer casing (5) faces outward The direction of the injection tube (7) protrudes, and a pair of support plates (6) are hingedly placed on one end of the outer casing (5) through a connecting shaft (9). The support plates (6) are arc-shaped plates, and the outer injection tube The outer wall of (7) is provided with a plurality of through holes (8) along the axial direction, and the said through holes (8) run through the outer injection pipe (7). ring (3), finger collar (4), limit ring frame (10), inner injection tube (11), liquid storage channel (12), inner rotor core (13), guide ring (14), piston (15 ) and the injection channel (16), one end of the inner rotating core (13) is placed inside the outer casing (5), and the middle part of one end of the inner rotating core (13) protrudes toward the direction of the outer injection pipe (7), and The outer casing (5) fits together, and the outer wall of the inner rotating core (13) is axially provided with a plurality of guide rings (14), and the inner wall of the outer casing (5) is provided with a plurality of guide rings (14). Corresponding to the guide groove, the number of the guide rings (14) is at least three, the inner injection tube (11) is placed inside the outer injection tube (7), and is connected with the inner rotary core (13), and the inner rotary core (13) There are four liquid storage channels (12) at the upper angle. The liquid storage channels (12) extend along the axial direction of the inner rotating core (13) and extend to the swivel (3) correspondingly. The push rod (2 ) is placed inside the liquid storage channel (12), the piston (15) is placed on one end of the push rod (2), and the other end of the push rod (2) passes through the swivel (3) and extends to the outer sleeve (5) Externally, the pressing plate (1) is placed on the other end of the push rod (2), and an injection channel (16) corresponding to the liquid storage channel (12) is opened on one end surface of the inner rotating core (13), and the injection channel ( 16) Extend through the inner rotating core (13) to the end of the inner injection tube (11), the swivel (3) is placed on the other end of the inner rotating core (13), and is located outside the outer casing (5), The limit ring frame (10) is placed on the other end of the outer sleeve (5), and the corresponding sleeve is placed on the swivel (3). A pair of finger collars (4) are arranged on the position ring frame (10), and the position-limiting device is made up of snap beads (17), springs (18), main position-limiting grooves (19) and auxiliary position-limiting grooves (20). The outer wall of the rotating core (13) is provided with four main limiting grooves (19) at equal angles, and the inner wall of the outer sleeve (5) is provided with auxiliary limiting grooves (20) corresponding to the main limiting grooves (19). ), the clamping ball (17) is placed inside the auxiliary limiting groove (20), and is correspondingly engaged with the main limiting groove (19), and one end of the spring (18) is placed on the clamping bead (17), and the spring (18 ) is placed on the groove wall of the auxiliary limiting groove (20), and the main limiting groove (19) for arc grooves.

When in use, hold the puncture needle through the finger collar (4) on the outer cannula (5), and move the swivel ring (3) through the relief groove on the limit ring frame (10), thereby driving the inner rotation The core (13) rotates, and the inner rotating core (13) drives the inner injection tube (11) to rotate inside the outer injection tube (7). When the inner rotating core (13) rotates, the clamping ball (17) is squeezed, The snap ball (17) enters into the auxiliary limiting groove (20) to squeeze the spring (18). Since the four main limiting grooves (19) are circumferentially arranged, two adjacent main limiting grooves (19) ) is 90°, so that when the inner rotating core (13) rotates 90° each time, the main limiting groove (19) on the inner rotating core (13) and the auxiliary limiting groove on the outer sleeve (5) Corresponding to the groove (20), the spring (18) resets and pushes the card ball (17) to engage with the main limit groove (19) correspondingly, and blocks the inner rotating core (13), so that the four injection channels (16 ) communicate with the through hole (8) in turn, cooperate with the pressure plate (1), the push rod (2) and the piston (15), so that the extraction of various tissue fluids and the injection of different medicines can be carried out at the same time, so that the inner rotating core (13) cooperate with the ball to rotate 90°, cooperate with a group of through holes (8) on the outer injection tube (7) and four liquid storage channels (12) inside the inner rotating core (13) to treat various human tissue fluids. Extraction without multiple punctures, avoiding wound expansion caused by repeated punctures;

The spacer ring frame (10) is provided with a design of a step-off groove, and the swivel (3) can be moved through the step-off groove, thereby ensuring that the limiter ring frame (10) can move the swivel ring (3). In the case of a limit, avoid affecting the rotation of the swivel (3);

The design of a pair of finger collars (4) is arranged on the limit ring frame (10), which can make it more convenient for the user to hold the puncture needle, and can improve the stability during use and avoid the user's unstable grip;

The main limiting groove (19) is designed as an arc-shaped groove, which can guide the balls in an arc shape to avoid jamming between the ball and the main limiting groove (19) when the inner rotor (13) is rotated;

The support plate (6) is designed as a curved plate, and with the hinged structure between the support plate (6) and the outer casing (5), the angle between the two sets of support plates (6) can be freely adjusted to adapt to Fitting needs of different body parts to form a stable support;

The through hole (8) runs through the design of the outer injection tube (7), and cooperates with the inner injection channel (16) to form communication, and the four injection channels (16) communicate with the injection channel (16) in this way, so as to treat different interstitial fluids. to extract;

The middle part of one end of the outer sleeve (5) is designed to bulge outward in the direction of the injection tube (7). When the outer injection tube (7) is inserted into the human body to inject the human body, the protrusion at the middle part of the outer sleeve (5) can Support the skin of the human body to prevent bacteria from contaminating the wound site of the human body;

The number of the guide rings (14) is designed to be at least three, and the outer casing (5) and the inner rotor core (13) can be better engaged and fixed together by the guide rings (14) matching the guide grooves, so as to avoid their fall off;

The matching design of the inner rotating core (13) and the balls, the arc between the four balls is 90°, when the inner rotating core (13) rotates, the balls are squeezed, and the ball compression spring (18) enters the In the auxiliary limiting groove (20), when the inner rotating core (13) rotates 90°, the main limiting groove (19) on the inner rotating core (13) and the auxiliary limiting groove (20) on the adjacent side are in phase. Corresponding to the connection, the spring (18) resets and pushes the ball to engage in the main limit groove (19), so as to limit the engagement of the inner rotor core (13), and cooperate with the through hole (8) and the injection channel (16) Extraction of different tissue fluids;

The inner rotor core (13) and the ball are matched to perform a 90° rotation, and a set of through holes (8) on the outer injection tube (7) and the four liquid storage channels (12) inside the inner rotor core (13) are matched. A variety of human tissue fluids are extracted without multiple punctures, and the purpose of avoiding wound expansion caused by repeated punctures.

Claims (9)

1. A puncture needle for urology department is characterized in that: the main body steering device comprises a pressing plate, a push rod, a rotating ring, a finger ring, a limiting ring frame, an inner injection pipe, a liquid storage channel, an inner rotating core, a guide ring, a piston and an injection channel, wherein one end of the inner rotating core is arranged in the outer sleeve, the middle part of one end of the inner rotating core protrudes towards the direction of the outer injection pipe and is jointed with the outer sleeve, a plurality of guide rings are arranged on the outer wall of the inner rotating core along the axial direction, a plurality of guide grooves corresponding to the guide rings are arranged on the inner wall of the outer sleeve, the inner injection tube is arranged in the outer injection tube and connected with the inner rotary core, four liquid storage channels are arranged on the inner rotary core at equal angles, the liquid storage channels extend along the axial direction of the inner rotary core and correspondingly extend to the rotary ring, one end of a push rod is arranged in the liquid storage channels, a piston is arranged at one end of the push rod, the other end of the push rod passes through the rotary ring and extends to the outside of the outer sleeve, a pressing plate is arranged at the other end of the push rod, injection channels which correspond to the liquid storage channels one by one are arranged on one end face of the inner rotary core, the injection channels pass through the inner rotary core and extend to the end part of the inner injection tube, the rotary ring is arranged at the other end of the inner rotary core and is positioned outside the outer sleeve, a limit ring is arranged at the other end of the outer sleeve and correspondingly sleeved on the rotary ring, a abdicating groove is arranged on the limit ring frame, a pair of finger-ring rings is arranged on the limit ring frame, and the limit device consists of a clamping bead, a spring, a main limit groove and an auxiliary limit groove, the first-class angle of outer wall of internal rotation core is opened there are four main spacing grooves, and it has the assistance spacing groove with the corresponding intercommunication of main spacing groove to open on the inner wall of outer tube, and the card pearl is arranged in and is assisted the spacing inslot portion, and with the corresponding block of main spacing groove, on the card pearl was arranged in to the one end of spring, the other end of spring was arranged in and is assisted on the cell wall of spacing groove.

2. The urological puncture needle according to claim 1, wherein the inner rotating core and the ball are matched to rotate 90 °, and a plurality of body tissues are extracted by matching with a group of through holes on the outer injection tube and four liquid storage channels inside the inner rotating core, so that multiple punctures are not needed, and the wound expansion caused by repeated punctures is avoided.

3. The urological puncture needle according to claim 2, wherein the inner rotating core and the balls are matched, the radian among the four balls is 90 degrees, when the inner rotating core rotates, the balls are extruded, the ball compression spring enters the auxiliary limiting groove, after the inner rotating core rotates for 90 degrees, the main limiting groove on the inner rotating core is correspondingly communicated with the auxiliary limiting groove on the adjacent side, the spring resets to push the balls to be correspondingly clamped in the main limiting groove, so that the inner rotating core is clamped in a limiting manner, and different tissue fluids are extracted by matching the through hole and the injection channel.

4. A urological puncture needle according to claim 1, characterized in that the number of guide rings is at least three.

5. A puncture needle for urology according to claim 1 wherein the middle of one end of the outer sleeve is convex towards the outer syringe.

6. The puncture needle for urology department according to claim 5, characterized in that when the outer syringe is inserted into the human body to inject into the human body, the protrusion in the middle of one end of the outer sleeve can support the skin of the human body, avoiding bacteria to pollute the wound of the human body.

7. A urological puncture needle according to claim 1, characterized in that the through-hole runs through the outer syringe and is designed to communicate with the inner injection channel, whereby four injection channels communicate with the injection channel for the extraction of different tissue fluids.

8. The urological puncture needle according to claim 1, wherein the main limiting groove is an arc-shaped groove, and the ball is guided in an arc shape to prevent the ball from being caught by the main limiting groove when the inner rotary core is rotated.

9. A urological puncture needle according to claim 1, characterized in that the support plate is an arc-shaped plate.

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