CN204352319U - Endoscopic surgery spray line - Google Patents

Abstract

The utility model provides a spraying tube for endoscopic surgery, which includes a handle, an outer tube, a nozzle and a nozzle cover. The handle and the nozzle are respectively connected to two ends of the outer tube. The nozzle is a hollow structure with an open end and communicates with the outer tube. There are a number of diversion holes on the side of the head end of the nozzle, and a diversion groove on the end surface of the nozzle. The diversion groove includes an arc groove located in the center of the end face of the nozzle and several guide grooves whose sides are tangent to the arc groove. It is connected with the circular arc groove, and the medicine liquid introduced into the circular arc groove through several guide grooves flows in the same direction in the circular arc groove; the nozzle cover is a hollow structure with an open end, and the end of the nozzle cover is sleeved on the nozzle. There is a gap between the inner wall of the end side and the outer wall of the side of the nozzle, the gap forms a spray cavity, the spray cavity communicates with the introduction groove and the flow guide hole, and the end surface of the nozzle cover has a nozzle hole corresponding to the position of the arc groove. The spray pipe does not need to be installed with a riser, the resistance of the liquid medicine is greatly reduced, and the formed spray is more uniform and spirally sprayed out.

Description

Endoscopic surgery spray tube

technical field

The utility model belongs to the field of medical equipment, in particular to a spray pipe.

Background technique

The spray tube is a commonly used medical device in endoscopic surgery. It is used to remove body fluids, mucus, etc. on the lesion tissue to avoid affecting the endoscopic field of view. The device has the advantages of convenient operation and low price, and is widely used in endoscopic clinics and operations.

The spray pipe in the prior art includes a handle, an outer pipe, a nozzle and a riser installed in the nozzle. The most common riser is made of a number of stainless steel wires that are artificially twisted and pressed into the nozzle. Rinse to the nozzle, and the liquid medicine will produce flushing or spraying effect through the diversion of the riser. This kind of riser will easily cause the pipeline blockage in the nozzle, and the spraying range and angle will be limited, which will affect the effect of spraying or flushing; the other The riser is a spiral riser, that is, there are several spiral pipelines on the riser. The spraying range and angle of the riser are precise, and the operation is easy and controllable.

However, the above-mentioned spraying pipes all adopt the structure that the riser is installed in the nozzle. With this structure, the nozzle has a great resistance to the liquid medicine when the liquid passes through the nozzle, which will cause the sprayed mist beads to be uneven, thereby affecting the spraying effect. Effect.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiency of the spray core in the prior art that has relatively large resistance to the liquid medicine, and to provide a spray tube for endoscopic surgery, which has small resistance to the liquid medicine and can spiral mist beads, and The sprayed mist beads are uniform.

The technical solution adopted by the utility model to solve the technical problem is: a spray tube for endoscopic surgery, including a handle, an outer tube, a nozzle and a nozzle cover, the handle and the nozzle are respectively connected to the two ends of the outer tube, and the nozzle It is a hollow structure with an open end and communicates with the outer pipe. A number of diversion holes are provided on the side of the head of the nozzle (the head of the nozzle is located outside the outer pipe), and a diversion groove is provided on the end surface of the nozzle. , the guide groove includes an arc groove located at the center of the end face of the nozzle and several introduction grooves whose sides are tangent to the arc groove. The liquid medicine introduced into the arc groove flows in the same direction in the arc groove; the nozzle cover is a hollow structure with an open end, and the end of the nozzle cover is sleeved on the nozzle, and the inner wall of the side of the head end and the outer wall of the side of the nozzle There is a gap between them, and the gap forms a spray chamber, and the spray chamber communicates with the introduction groove and the guide hole, and the end surface of the nozzle cover has a spray hole corresponding to the position of the arc groove. The utility model utilizes the guide groove and the arc groove to cooperate to import the liquid medicine from the lead groove, because one side of the lead groove is tangent to the arc groove, and the medicine liquid introduced by each lead groove has the same flow direction in the arc groove, so When the liquid medicine collides in the circular arc groove, it will form mist beads, which will be sprayed in a spiral shape when sprayed out.

Further, in order to improve the fastness of the connection between the handle and the spray head and the outer tube, the joints of the handle, the spray head and the outer tube are all provided with inverted tooth structures.

As a preference, the connection between the handle and the outer tube requires relatively high requirements. In order to further improve the fastness of the connection between the handle and the outer tube, a sheath tube is also provided at the joint between the handle and the outer tube, and the sheath tube is coated on the The outside of the outer tube that connects to the handle.

Preferably, in order to simplify the structure, the number of the introduction grooves is two, and they are arranged parallel to each other. It should be noted that the number of guide grooves is more than two, and it is also applicable to the present invention, as long as one side of each guide groove is tangent to the arc groove, and the liquid medicine introduced into the arc groove through the several guide grooves The flow direction in the circular arc groove is consistent, but due to the small size of the nozzle, it is inconvenient to process. In order to simplify the structure, the number of introduction grooves is set to two, and they are arranged parallel to each other.

Further, in order to simplify the structure and facilitate installation, the outer wall of the head end of the nozzle is stepped, and the diameter of the lower part is large, and the diameter of the inner wall of the nozzle cover is the same as the diameter of the lower part of the head end of the nozzle; It is also suitable for this application, but because the parts of the spray pipe are relatively small, the processing of this structure is inconvenient.

Preferably, in order to make the formed mist be sprayed smoothly from the spray hole, the spray hole is conical, shrinking from inside to outside, and its maximum diameter is larger than the diameter of the arc groove.

The beneficial effect of the utility model is that the sprinkler pipe of the utility model does not need to be installed with a spray core, the resistance of the liquid medicine is greatly reduced in the process of passing through the nozzle, and the formed spray is more uniform and spirally sprayed out.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of the assembly of the nozzle, the nozzle cover and the outer pipe;

Figure 3 is a top view of the nozzle;

In the figure: 1. nozzle cover, 11. nozzle hole, 2. nozzle, 21. diversion hole, 22. spray cavity, 23. diversion groove, 231. guide groove, 232. arc groove, 24. inverted tooth, 3. Outer tube, 4. Sheath tube, 5. Handle

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

Example 1

As shown in Figures 1 to 3, the spray tube for endoscopic surgery of the present invention includes a handle 5, an outer tube 3, a nozzle 2 and a nozzle cover 1, and the handle 5 and the nozzle 2 are respectively connected to the two ends of the outer tube 3. The connection between the handle 5 and the nozzle 2 and the outer tube 3 is provided with a structure of inverted teeth 24, and the connection between the handle 5 and the outer tube 3 is also provided with a sheath tube 4, and the sheath tube 4 covers Outside the outer tube 3 connected to the handle 5, the spray head 2 is a hollow structure with an open end and communicates with the outer tube 3;

Two guide holes 21 are provided on the side of the head end of the nozzle 2, and a guide groove 23 is provided on the end surface of the nozzle 2, and the guide groove 23 includes an arc groove located at the center of the end surface of the nozzle 2 232 and two introduction grooves 231 whose sides are tangent to the arc groove 232, and the two introduction grooves 231 are arranged in parallel, the introduction groove 231 communicates with the arc groove 232, and passes through the several The medicinal solution introduced into the arc groove 232 by the introduction groove 231 flows in the same direction in the arc groove 232;

The nozzle cover 1 is a hollow structure with an open end, and the end of the nozzle cover 1 is sleeved on the nozzle 2. The specific sleeve structure is that the outer wall of the head end of the nozzle 2 is stepped, and the diameter of the lower part is large. The diameter of the inner wall of the nozzle cover 1 is the same as the diameter of the lower part of the head end of the nozzle 2. The inner wall of the nozzle cover 1 is closely attached to the lower outer wall of the head end of the nozzle 2. There is a gap between the inner wall of the head end side and the outer wall of the nozzle 2 side. The gap forms Spray cavity 22, said spray cavity 22 communicates with guide groove 231 and diversion hole 21, said spray head cover 1 end surface has a spray hole 11 corresponding to the position of arc groove 232, specifically said spray hole 11 is a cone The shape is contracted from the inside to the outside, and its maximum diameter is larger than the diameter of the arc groove 232 .

The working principle of the above-mentioned spraying pipe is as follows. After the device is installed, the medicinal liquid is introduced into the nozzle 2 through the inlet on the handle 5 through the outer pipe 3, then flows into the spray chamber 22 through the diversion hole 21, and then flows into the circular nozzle 231 through the guide groove 231. The arc grooves 232 , the medicine liquid introduced by each introduction groove 231 flow in the same direction in the arc grooves 232 , when a collision occurs, a spiral spray will be generated, and finally sprayed out through the spray holes 11 .

Claims (6)

1. an endoscopic surgery spray line, it is characterized in that: comprise handle (5), outer tube (3), shower nozzle (2) and nozzle set (1), described handle (5) and shower nozzle (2) are connected to the two ends of outer tube (3), described shower nozzle (2) is open-ended hollow structure, and be communicated with outer tube (3), the head end side of described shower nozzle (2) offers some pod apertures (21), described shower nozzle (2) end face offers guiding gutter (23), described guiding gutter (23) comprises the arc groove (232) and some limits that are positioned at shower nozzle (2) end face center and the tangent lead-in groove (231) of arc groove (232), described lead-in groove (231) is communicated with arc groove (232), and flow to unanimously in arc groove (232) through the medicinal liquid of described some lead-in grooves (231) importing arc groove (232), described nozzle set (1) is open-ended hollow structure, the end of described nozzle set (1) is socketed on shower nozzle (2), between the outer wall of the inwall of its head end side and shower nozzle (2) side, there is gap, this gap forms spray chamber (22), described spray chamber (22) is communicated with lead-in groove (231) and pod apertures (21), and described nozzle set (1) end face has the spray orifice (11) corresponding with arc groove (232) position.

2. endoscopic surgery spray line according to claim 1, is characterized in that: described handle (5) and shower nozzle (2) are provided with pawl (24) structure with the junction of outer tube (3).

3. endoscopic surgery spray line according to claim 1 and 2, it is characterized in that: described handle (5) and outer tube (3) junction are also provided with protecting pipe (4), and described protecting pipe (4) is coated on the outside of the outer tube (3) be connected with handle (5).

4. endoscopic surgery spray line according to claim 1, is characterized in that: described lead-in groove (231) quantity is two, and arranged in parallel.

5. endoscopic surgery spray line according to claim 1, it is characterized in that: described shower nozzle (2) head end outer wall is stepped, lower diameter is large, and described nozzle set (1) inner diameter is identical with the lower diameter of shower nozzle (2) head end.

6. endoscopic surgery spray line according to claim 1, is characterized in that: described spray orifice (11) is taper, become contraction-like from inside to outside, and its maximum gauge is greater than the diameter of described arc groove (232).