CN108201654B

CN108201654B - Multipurpose spraying conduit

Info

Publication number: CN108201654B
Application number: CN201810264939.7A
Authority: CN
Inventors: 邹莹莹; 王莉慧; 金兵兵; 黄颖
Original assignee: Southern Hospital Southern Medical University
Current assignee: Southern Hospital Southern Medical University
Priority date: 2018-03-28
Filing date: 2018-03-28
Publication date: 2023-10-13
Anticipated expiration: 2038-03-28
Also published as: CN108201654A

Abstract

The invention discloses a multipurpose spraying conduit, which comprises an inner pipe, wherein two ends of the inner pipe are respectively connected with a spray head and a first liquid injection port, and the spray head is provided with a first spray hole; the spray head is characterized by further comprising a shell which is arranged outside the inner tube and in clearance arrangement with the inner tube, wherein one end, close to the spray head, of the shell is provided with a second annular spray hole, the side wall of the other end of the shell is provided with a second liquid injection port, the first liquid injection port is positioned outside the shell, the clearance arrangement between the outer side wall of the spray head and the inner side wall of the shell forms the second annular spray hole, and the clearance width of the second spray hole is larger than the aperture of the first spray hole. The multipurpose spraying catheter provided by the invention can spray liquid medicine with thinner concentration and emulsion with higher viscosity, and can not be blocked.

Description

Multipurpose spraying conduit

Technical Field

The invention relates to the field of medical spraying catheters, in particular to a multipurpose spraying catheter.

Background

The spraying catheter adopted at the current stage is a spraying catheter of olympus, the spraying catheter mainly has the functions of dyeing, locally spraying medicines or locally flushing, the clinical esophagus is often subjected to iodine dyeing by adopting the spraying catheter, the local lesion of the stomach is dyed by adopting methylene blue or indigo carmine, or the spraying catheter is used for locally spraying mucous membrane protective agents such as Jiesvele, or physiological saline needs to be flushed when the mucous which affects the observation locally.

However, when the original Olympus spray catheter has an outer plastic catheter with a diameter of 2mm and the liquid medicine can only come out from a metal hole with a diameter of 0.5 mm, the spraying of a liquid with high viscosity like Jiesville emulsion liquid medicine is difficult. When the liquid with thinner concentration needs to be sprayed, the sprayed water resembles a trapezoid water mist, and uneven spraying can occur in pathological change dyeing.

In addition, the original Olympus spray catheter is a single-layer plastic catheter, so that the hardness supporting force is insufficient when the original Olympus spray catheter passes through an endoscopic biopsy hole, and a metal guide wire is needed to be fixedly supported.

Disclosure of Invention

The invention aims to provide a multipurpose spraying catheter which can spray liquid medicine with thinner concentration and emulsion with higher viscosity, can spray the emulsion with higher viscosity without blocking, and solves the technical problems of single function, poor adaptability and easy blocking of the traditional spraying catheter.

In order to achieve the above purpose, the invention provides a multipurpose spray conduit, which comprises an inner pipe, wherein two ends of the inner pipe are respectively connected with a spray head and a first liquid injection port, and the spray head is provided with a first spray hole; the spray head is characterized by further comprising a shell which is arranged outside the inner tube and in clearance arrangement with the inner tube, wherein one end, close to the spray head, of the shell is provided with a second annular spray hole, the side wall of the other end of the shell is provided with a second liquid injection port, the first liquid injection port is positioned outside the shell, the clearance arrangement between the outer side wall of the spray head and the inner side wall of the shell forms the second annular spray hole, and the clearance width of the second spray hole is larger than the aperture of the first spray hole.

As a further improvement of the invention, the spray head is of a hollow cylindrical structure, one end of the spray head is communicated with the inner pipe, the other end of the spray head is of a closed structure, the number of the first spray holes is a plurality of spray heads and are uniformly distributed around the side wall of the spray head, and a structure capable of relatively moving along the axial direction of the inner pipe and enabling the spray head to extend out of or retract into one end of the outer shell is arranged between the inner pipe and the outer shell.

As a further improvement of the invention, an inner sleeve and a metal tube are sequentially connected between the first liquid injection port and the inner tube along the liquid flow direction, the input end of the inner sleeve is positioned at the outer side of the shell, and the output end of the inner sleeve and the metal tube are positioned at the inner side of the shell.

As a further improvement of the invention, a limiting mechanism capable of limiting the moving distance of the side wall of the output end of the inner sleeve and the inner wall of the shell is arranged between the side wall of the output end of the inner sleeve and the inner wall of the shell.

As a further improvement of the invention, the second spray hole is oriented at an angle of 5-20 degrees to the extending direction of the inner tube.

As a further improvement of the invention, the number of the second spray holes is one, and the inner pipe, the spray head and the second spray holes are arranged on the same central line.

As a further improvement of the invention, the outer casing comprises an outer sleeve and an outer cap which are connected with each other, the outer sleeve is positioned between the outer cap and the second spray hole, and the second liquid injection port is arranged on the side wall of the outer cap.

As a further improvement of the invention, the cross section size of the outer cap is larger than the pipe diameter of the outer sleeve, and the outer diameter of the outer sleeve is 2.7-4.0mm.

As a further improvement of the invention, the outer diameter of the inner pipe is 0.7-1.3mm, the outer diameter of the spray head is 1-2mm, the length of the spray head is 5-7mm, and the aperture of the first spray hole is 0.3-0.6mm.

As a further improvement of the invention, both the inner tube and the outer shell are transparent structures.

Advantageous effects

Compared with the prior art, the multipurpose spraying catheter has the advantages that:

1. since the gap width of the second spray hole is larger than the aperture of the first spray hole, the liquid passing capability between the inner tube and the outer shell is better than that in the inner tube. When the liquid medicine with thinner concentration needs to be sprayed, the liquid medicine is pressed into the inner tube from the first liquid injection port by the injector, and the liquid medicine is sprayed out from the first spray hole on the spray head; when the emulsion-shaped liquid medicine needs to be sprayed, the liquid medicine is pressed into the cavity between the inner pipe and the outer shell from the second liquid injection port by the injector, and the liquid medicine is sprayed out from the second spray hole, because the second spray hole is annular, the liquid medicine is sprayed out and then converged into water drop-shaped emulsion after being sprayed out, the emulsion-shaped liquid medicine has better trafficability when being extruded, can be used for liquid medicine with thinner concentration, can be used for liquid medicine with higher viscosity such as emulsion-shaped liquid medicine, has wide application range, does not need to develop two spray pipes with different specifications, and reduces development cost;

2. the number of the first spray holes is multiple and the first spray holes are uniformly distributed around the side wall of the spray head, so that the liquid medicine is in an annular diffusion shape when sprayed, and the spraying distribution is more uniform; in order to avoid blocking the first spray hole when the inner wall of the shell sprays, the spray head can move along with the inner tube and extend out from one end of the shell. When the liquid medicine with thinner concentration needs to be sprayed, the spray head extends out from one end of the shell, and when the emulsion-shaped liquid medicine needs to be sprayed, the spray head locks one end of the shell and forms an annular second spray hole, so that the operation is simple;

3. the metal tube is used for reducing the total length of the inner tube, and even if the inner tube is a plastic hose, the metal tube can ensure that the inner tube cannot excessively deform in the moving process as far as possible;

4. the limiting mechanism can prevent the movement of the inner tube and the outer shell from exceeding a set range, so that the sealing performance of the joint of the inner tube and the outer shell is prevented from being damaged, and the normal use of the spray catheter is ensured;

5. the inner tube and the outer shell are transparent structures, so that a person can conveniently see the flowing condition of the liquid in the inner tube, and the working state of the spray tube can be judged conveniently;

6. the included angle between the direction of the second spray hole and the extending direction of the inner tube is 5-20 degrees, so that the maximum area at the outlet of the second spray hole is increased, and the resistance of the emulsion-shaped liquid medicine in spraying is reduced;

7. the plastic inner pipe and the outer sleeve are nested together, so that the double-layer pipeline has better supporting effect on hardness, and external force supporting by a metal guide wire is not needed.

The invention will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a multipurpose spray catheter in use;

FIG. 2 is a second schematic view of the use of the multipurpose spray catheter.

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings.

Examples

The specific embodiment of the invention is shown in fig. 1 and 2, and the multipurpose spray catheter comprises an inner pipe 1, wherein two ends of the inner pipe 1 are respectively connected with a spray head 2 and a first liquid injection port 4, and a first spray hole 21 is arranged on the spray head 2; the novel shower nozzle further comprises a housing 5 which is arranged outside the inner pipe 1 and in clearance arrangement with the inner pipe, a second annular spray hole 7 is formed in one end, close to the shower nozzle 2, of the housing 5, a second liquid injection port 6 is formed in the side wall of the other end of the housing 5, the first liquid injection port 4 is located outside the housing 5, the clearance arrangement between the outer side wall of the shower nozzle 2 and the inner side wall of the housing 5 forms the second annular spray hole 7, and the clearance width of the second spray hole 7 is larger than the aperture of the first spray hole 21. The distance between the outer wall of the inner tube 1 and the inner wall of the outer sleeve 51 is also larger than the aperture of the first spray hole 21, so that the emulsion-shaped liquid medicine can pass through conveniently.

The outer casing 5 comprises an outer sleeve 51 and an outer cap 52 which are connected with each other, the outer sleeve 51 is positioned between the outer cap 52 and the second spray hole 7, and the second liquid injection port 6 is arranged on the side wall of the outer cap 52.

The spray head 2 is of a hollow cylindrical structure, one end of the spray head 2 is communicated with the inner tube 1, the other end of the spray head is of a closed structure, the number of the first spray holes 21 is multiple, the spray head is uniformly distributed around the side wall of the spray head 2, and a structure capable of relatively moving along the axial direction of the inner tube 1 and enabling the spray head 2 to extend out of or retract into one end of the outer sleeve 51 is arranged between the inner tube 1 and the outer shell 5.

The first liquid injection port 4 and the inner tube 1 are sequentially connected with the inner sleeve 3 and the metal tube 9 along the liquid flow direction, the input end of the inner sleeve 3 is positioned at the outer side of the shell 5, and the output end of the inner sleeve 3 and the metal tube 9 are positioned at the inner side of the shell 5. The metal tube 9 is sleeved with the inner tube 1.

The inner tube 1 is a plastic hose, and the inner sleeve 3 and the outer shell 5 are both made of hard plastics.

A limiting mechanism 8 capable of limiting the moving distance of the side wall of the output end of the inner sleeve 3 and the inner wall of the outer shell 5 is arranged between the side wall of the output end of the inner sleeve and the inner wall of the outer shell.

The limit mechanism 8 includes a slider 81, a first blocking portion 82, and a second blocking portion 83. In this embodiment, the sliding block 81 is disposed on the side wall of the output end of the inner sleeve 3, the first blocking portion 82 and the second blocking portion 83 are both disposed on the inner side wall of the outer cap 52, the arrangement direction of the first blocking portion 82 and the second blocking portion 83 is parallel to the moving direction of the inner tube 1, and the sliding block 81 is located between the first blocking portion 82 and the second blocking portion 83. The first blocking portion 82 and the second blocking portion 83 serve to limit the moving range of the slider 81.

The second nozzle holes 7 may be oriented in the same direction as the extension direction of the inner tube 1. However, in order to make the emulsion-like chemical liquid be ejected from the second nozzle 7 more smoothly, the angle between the direction of the second nozzle 7 and the extending direction of the inner tube 1 is set to be 5-20 °, so that the maximum area at the outlet of the second nozzle 7 is increased, and the resistance of the emulsion-like chemical liquid in ejection is reduced. Specifically, in the present embodiment, the second nozzle hole 7 is oriented at an angle ranging from 10 ° to the extending direction of the inner tube 1.

The number of the second spray holes 7 is one, and the inner pipe 1, the spray head 2, the second spray holes 7 and the outer sleeve 51 are arranged on the same central line.

The cross section size of the outer cap 52 is larger than the pipe diameter of the outer sleeve 51, and the outer diameter of the outer sleeve 51 is 2.7-4.0mm. In this embodiment, the outer diameter of the outer sleeve 51 is 2.7mm, and the inner diameter of the outer sleeve 51 is 2.5mm.

The outer diameter of the inner pipe 1 is 0.7-1.3mm, the outer diameter of the spray head 2 is 0.8-1.4mm, the length of the spray head 2 is 5-7mm, and the aperture of the first spray hole 21 is 0.3-0.6mm. In this embodiment, the outer diameter of the inner tube 1 is 0.9mm, the inner diameter of the inner tube 1 is 0.7mm, the outer diameter of the nozzle 2 is 1.0mm, the length of the nozzle 2 is 6mm, and the aperture of the first nozzle hole 21 is 0.4mm. Therefore, the minimum gap width of the second nozzle hole 7 is 0.75mm, which is greater than the aperture of the first nozzle hole 21 by 0.4mm. The distance between the outer wall of the inner tube 1 and the inner wall of the outer sleeve 51 is 0.8mm and is also larger than the aperture of the first spray hole 21 by 0.4mm.

The inner tube 1 and the outer shell 5 are transparent structures.

The inner sleeve 3 passes through the outer cap 52 with a seal therebetween.

When the spray nozzle is used, when the spray nozzle needs to spray the liquid medicine with thinner concentration, the inner sleeve 3 is pushed to expose the spray head 2 from one end of the outer sleeve 51, the liquid medicine is pressed into the inner tube 1 from the first liquid injection port 4 by a syringe, and the liquid medicine is sprayed from the first spray hole 21 on the side wall of the spray head 2 to form annular spray. When the emulsion-shaped liquid medicine needs to be sprayed, the inner sleeve 3 is pulled to retract the spray head 2 to the inner side of one end of the outer sleeve 51, the liquid medicine is pressed into a cavity between the inner tube 1 and the outer shell 5 from the second liquid injection port 6 by using a syringe, and the liquid medicine is sprayed from the second spray hole 7. When the emulsion medicine is injected, a 2-5ml syringe is preferably used.

In the above embodiment, when the first nozzle hole 21 on the nozzle 2 is not disposed on the side wall thereof, but disposed at the end of the nozzle 2, the inner tube 1 and the housing 5 may be relatively fixed, the nozzle 2 is disposed inside one end of the housing 5 and can operate without extending, and the first nozzle hole 21 is not interfered by the side wall of the housing 5.

The invention has been described in connection with the preferred embodiments, but the invention is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the invention.

Claims

1. The multipurpose spraying conduit comprises an inner pipe (1), and is characterized in that two ends of the inner pipe (1) are respectively connected with a spray head (2) and a first liquid injection port (4), and a first spray hole (21) is formed in the spray head (2); the spray head comprises an inner pipe (1) and is characterized by further comprising a shell (5) which is arranged outside the inner pipe (1) and is in clearance arrangement with the inner pipe, one end, close to the spray head (2), of the shell (5) is provided with a second annular spray hole (7), the other end side wall of the shell (5) is provided with a second liquid injection port (6), the first liquid injection port (4) is positioned outside the shell (5), a clearance arrangement is formed between the outer side wall of the spray head (2) and the inner side wall of the shell (5) to form the second annular spray hole (7), and the clearance width of the second spray hole (7) is larger than the aperture of the first spray hole (21); the spray head (2) is of a hollow cylindrical structure, one end of the spray head is communicated with the inner tube (1), the other end of the spray head is of a closed structure, the number of the first spray holes (21) is multiple and is uniformly distributed around the side wall of the spray head (2), and a structure capable of relatively moving along the axial direction of the inner tube (1) and enabling the spray head (2) to extend out of or retract into one end of the outer shell (5) is arranged between the inner tube (1) and the outer shell (5); an inner sleeve (3) and a metal tube (9) are sequentially connected between the first liquid injection port (4) and the inner tube (1) along the liquid flow direction, the input end of the inner sleeve (3) is positioned at the outer side of the shell (5), and the output end of the inner sleeve (3) and the metal tube (9) are positioned at the inner side of the shell (5); a limiting mechanism (8) capable of limiting the moving distance of the two limiting mechanisms is arranged between the side wall of the output end of the inner sleeve (3) and the inner wall of the outer shell (5), and the limiting mechanism (8) comprises a sliding block (81), a first blocking portion (82) and a second blocking portion (83).

2. A multipurpose spray conduit according to claim 1, characterized in that the second nozzle orifice (7) is oriented at an angle of 5-20 ° to the extension direction of the inner tube (1).

3. A multipurpose spray conduit according to claim 1 or 2, characterized in that the number of second spray holes (7) is one, the inner tube (1), the spray head (2) and the second spray holes (7) being arranged on the same centre line.

4. A multipurpose spray catheter according to claim 1 or 2, characterized in that the housing (5) comprises an outer sleeve (51) and an outer cap (52) connected to each other, the outer sleeve (51) being located between the outer cap (52) and the second nozzle orifice (7), the second nozzle orifice (6) being provided on a side wall of the outer cap (52).

5. A multipurpose spray catheter according to claim 4, characterized in that the cross-sectional size of the outer cap (52) is larger than the tube diameter of the outer sleeve (51), the outer diameter of the outer sleeve (51) being 2.7-4.0mm.

6. A multipurpose spray conduit according to claim 1 or 2, characterized in that the outer diameter of the inner tube (1) is 0.7-1.3mm, the outer diameter of the spray head (2) is 1-2mm, the length of the spray head (2) is 5-7mm, and the aperture of the first spray orifice (21) is 0.3-0.6mm.

7. A multipurpose spray conduit according to claim 1 or 2, characterized in that the inner tube (1) and the outer shell (5) are both transparent structures.