CN214511272U - Sacculus expansion syringe needle suitable for digestion scope submucosal tunnel technique - Google Patents

Abstract

The utility model discloses a sacculus expansion syringe needle suitable for tunnel technique under alimentary canal mucosa, the safety syringe comprises a syringe needle, the honeycomb duct, outer sheath pipe, the honeycomb duct head end is located to the syringe needle, it is intraductal that the honeycomb duct is located outer sheath pipe head portion outer wall is equipped with a plurality of recesses along circumference, be equipped with the film sacculus in the recess, be equipped with the medium passageway in the outer sheath pipe lateral wall, medium passageway intercommunication film sacculus, outer sheath pipe head end is equipped with the guide head, the guide head is from the duckbilled type of head to tail size crescent, guide head inner chamber afterbody is equipped with guide channel, outer sheath pipe afterbody is equipped with the handle, be equipped with the spacing portion of realizing limit function in the handle. The utility model discloses can effectively, establish the tunnel fast safely.

Description

Sacculus expansion syringe needle suitable for digestion scope submucosal tunnel technique

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a sacculus expansion syringe needle suitable for tunnel technique under digestion scope mucosa.

Background

The digestive endoscopy tunnel technology is a new technology for endoscopic minimally invasive treatment appearing in recent years, tumor resection is carried out inside and outside the tunnel by establishing a submucosal tunnel, the operation wound is small, the safety is high, and the digestive endoscopy tunnel technology is widely applied to diagnosis and treatment of digestive tract diseases.

The clinical application of the tunneling technique in minimally invasive treatment can be divided into the following steps according to anatomical levels: 1. mucosal layer side treatment: for the treatment of early esophageal cancer and precancerous lesions, such as endoscopic submucosal tunneling resection (ESTD); 2. submucosa and muscularis propria side treatment: can be used for treating achalasia of cardia and esophageal submucosa tumor, such as POEM and endoscopic tunneling tumor resection STER; 3. auxiliary diagnosis and treatment of esophageal lesion: procedures performed through the tunnel through the esophageal adventitia to the pleural cavity or mediastinum.

The current steps for establishing a tunnel are: positioning, marking, injecting, precutting the entrance of the tunnel, longitudinally stripping the mucosa through an entrance mucosa incision knife, establishing a submucosal tunnel, and excising the lesion under the direct view of an endoscope through the tunnel. It has the following disadvantages: 1. due to the fact that the tunnel is long, mucosa is lifted through repeated injection, and perforation is easily caused by high-frequency electrotome separation; 2. it takes a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sacculus expansion syringe needle suitable for tunnel technique under digestion scope mucosa can effectively, safely establish the tunnel fast.

In order to achieve the purpose, the utility model adopts the following technical proposal to realize:

the utility model discloses a balloon dilatation injection needle suitable for the technology of a digestive endoscopy submucosal tunnel, which comprises a needle head, a guide pipe and an outer sheath pipe, wherein the needle head is arranged at the head end of the guide pipe, the guide pipe is arranged in the outer sheath pipe,

the outer wall of the head part of the outer sheath tube is circumferentially provided with a plurality of grooves, thin film balloons are arranged in the grooves, the side wall of the outer sheath tube is internally provided with a medium channel, the medium channel is communicated with the thin film balloons, the head end of the outer sheath tube is provided with a guide head, the guide head is in a duckbill shape with gradually increased size from head to tail, and the tail part of the inner cavity of the guide head is provided with a guide channel;

the tail of the outer sheath tube is provided with a handle, a limiting part is arranged in the handle, the limiting part is communicated with the tail end of the flow guide tube, the handle is provided with a front positioning hole and a rear positioning hole along the axial direction, the side wall of the limiting part is provided with a convex point, the front positioning hole and the rear positioning hole are matched with the convex point, the bottom of the convex point is provided with a spring piece, the front positioning hole and the rear positioning hole are internally provided with a button, and the handle is provided with a medium interface.

Preferably, the distance between the front positioning hole and the rear positioning hole is more than or equal to the length of the needle head.

Preferably, the spring plate is made of plastic.

Preferably, the outer surface of the guide head is provided with an antibacterial layer.

Preferably, the size of the guide channel gradually increases from the head to the tail, and the inner diameter of the tail end of the guide channel is smaller than the outer diameter of the head end of the guide pipe.

Preferably, a plurality of membrane balloon tails are in communication.

Preferably, the tail end of the limiting part is communicated with the injection port.

Preferably, the bumps are hemispherical.

Preferably, the guide tube is in clearance fit with the outer sheath tube.

Preferably, the outer diameter of the head end of the limiting part is larger than the inner diameter of the outer sheath.

The utility model has the advantages that:

the utility model discloses a mucosa can be propped open after the inflation of film sacculus, can set up the tunnel fast effectively, safely, reduces the incidence of complications such as hemorrhage, perforation, shortens operation time, and the wound is little, alleviates patient's misery. .

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view taken along the direction A in FIG. 1;

FIG. 3 is an enlarged schematic view of position B of FIG. 1;

FIG. 4 is an enlarged schematic view of position C of FIG. 1;

fig. 5 is a top view of the guide head.

In the figure: 1-needle head, 2-honeycomb duct, 3-outer sheath tube, 4-film saccule, 5-medium channel, 6-guide head, 7-guide channel, 8-handle, 9-limiting part, 10-front positioning hole, 11-rear positioning hole, 12-button, 13-salient point, 14-spring piece, 15-medium interface and 16-injection interface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in figures 1-5, the utility model comprises a needle head 1, a flow guide tube 2, an outer sheath tube 3, the needle head 1 is arranged at the head end of the flow guide tube 2, the flow guide tube 2 is arranged in the outer sheath tube 3, the flow guide tube 2 is in clearance fit with the outer sheath tube 3,

the outer wall of the head of the outer sheath tube 3 is circumferentially provided with a plurality of grooves, film balloons 4 are arranged in the grooves, the tails of the film balloons 4 are communicated, the side wall of the outer sheath tube 3 is internally provided with a medium channel 5, the medium channel 5 is communicated with the film balloons 4, the head end of the outer sheath tube 3 is provided with a guide head 6, the guide head 6 is of a duckbill shape with gradually increased size from head to tail, the outer surface of the guide head 6 is provided with a bacteria inhibiting layer, the tail part of the inner cavity of the guide head 6 is provided with a guide channel 7, the size of the guide channel 7 is gradually increased from head to tail, and the inner diameter of the tail end of the guide channel 7 is smaller than the outer diameter of the head end of the flow guide tube 2;

the tail of the outer sheath tube 3 is provided with a handle 8, a limiting part 9 is arranged in the handle 8, the outer diameter of the head end of the limiting part 9 is larger than the inner diameter of the outer sheath tube 3, the limiting part 9 is communicated with the tail end of the guide tube 2, the tail end of the limiting part 9 is communicated with the injection interface 16, the handle 8 is provided with a front positioning hole 10 and a rear positioning hole 11 along the axial direction, the distance between the front positioning hole 10 and the rear positioning hole 11 is larger than or equal to the length of the needle head 1, the side wall of the limiting part 9 is provided with a convex point 13, the front positioning hole 10 and the rear positioning hole 11 are matched with the convex point 13, the convex point 13 is hemispherical, the bottom of the convex point 13 is provided with a spring piece 14, the spring piece 14 is made of plastic, the front positioning hole 10 and the rear positioning hole 11 are internally provided with a button 12, and the handle 8 is provided with a medium interface 15.

Use the utility model discloses an operating procedure does: positioning, marking, injecting, pre-incision, injecting to lift mucosa and blunt separating the mucosa, expanding the film saccule 4, establishing a tunnel, cutting off pathological changes, safe use, simple operation, effectively shortening the operation time,

the duckbilled guide head 6 can be conveniently sent to the mucosa after pre-cutting,

the guide channel 7 can facilitate the extension of the needle 1, and the guide channel 7 can limit the flow guide tube 2,

when the needle head 1 is extended, the button 12 is hidden down, the convex point 13 can be pushed out from the front positioning hole 10 or the rear positioning hole 11, the limiting part 9 is convenient to slide, meanwhile, the button 12 protrudes outwards for the convex point 13 completing the clamping action, the function of indication can be achieved,

be equipped with a plurality of recesses at 3 outer walls of sheath pipe, be equipped with film sacculus 4 in the recess, effectively protect film sacculus 4 when this device is visited, reduce the risk of film sacculus 4 damage.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims (10)

1. The utility model provides a sacculus expansion syringe needle suitable for tunnel technique under digestion endoscope mucosa which characterized in that: comprises a needle head (1), a flow guide pipe (2) and an outer sheath pipe (3), wherein the needle head (1) is arranged at the head end of the flow guide pipe (2), the flow guide pipe (2) is arranged in the outer sheath pipe (3),

a plurality of grooves are formed in the outer wall of the head of the outer sheathing canal (3) along the circumferential direction, a film balloon (4) is arranged in each groove, a medium channel (5) is arranged in the side wall of the outer sheathing canal (3), the medium channel (5) is communicated with the film balloon (4), a guide head (6) is arranged at the head end of the outer sheathing canal (3), the guide head (6) is of a duckbill shape with gradually increasing size from head to tail, and a guide channel (7) is arranged at the tail part of the inner cavity of the guide head (6);

the tail of the outer sheath tube (3) is provided with a handle (8), a limiting part (9) is arranged in the handle (8), the limiting part (9) is communicated with the tail end of the guide tube (2), the handle (8) is provided with a front positioning hole (10) and a rear positioning hole (11) along the axial direction, the side wall of the limiting part (9) is provided with a convex point (13), the front positioning hole (10) and the rear positioning hole (11) are matched with the convex point (13), the bottom of the convex point (13) is provided with a spring leaf (14), the front positioning hole (10) and the rear positioning hole (11) are internally provided with a button (12), and the handle (8) is provided with a medium interface (15).

2. A needle according to claim 1, characterized in that: the distance between the front positioning hole (10) and the rear positioning hole (11) is more than or equal to the length of the needle head (1).

3. A needle according to claim 1, characterized in that: the spring piece (14) is made of plastic.

4. A needle according to claim 1, characterized in that: the outer surface of the guide head (6) is provided with an antibacterial layer.

5. A needle according to claim 1, characterized in that: the size of the guide channel (7) gradually increases from head to tail, and the inner diameter of the tail end of the guide channel (7) is smaller than the outer diameter of the head end of the guide pipe (2).

6. A needle according to claim 1, characterized in that: the tail parts of the film balloons (4) are communicated.

7. A needle according to claim 1, characterized in that: the tail end of the limiting part (9) is communicated with an injection interface (16).

8. A needle according to claim 1, characterized in that: the salient points (13) are hemispherical.

9. A needle according to claim 1, characterized in that: the guide pipe (2) is in clearance fit with the outer sheath pipe (3).

10. A needle according to claim 1, characterized in that: the outer diameter of the head end of the limiting part (9) is larger than the inner diameter of the outer sheath tube (3).

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