CN213129794U

CN213129794U - Anchor type fixed EUS puncture needle

Info

Publication number: CN213129794U
Application number: CN202021397357.5U
Authority: CN
Inventors: 肖斌; 陈国胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-05-07
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a EUS pjncture needle is fixed to anchor formula, include: the wall of the outer pipe is provided with a guy cable channel along the axial direction of the outer pipe, a guy cable penetrates through the guy cable channel, the front end of the guy cable is connected with a fixed anchor, and the guy cable channel is not communicated with an inner hole of the outer pipe; the handle is connected to the rear end of the outer pipe, a sliding ring is arranged on the handle and is in sliding guide fit with the handle, and the rear end of the inhaul cable is connected with the sliding ring; when the sliding ring slides back and forth relative to the handle, the inhaul cable can be pushed and pulled and the fixed anchor is driven to penetrate out of or be retracted into the front end of the inhaul cable channel; the puncture needle is arranged in the outer tube in a penetrating mode along the axial direction, the puncture needle is in clearance fit with the outer tube, a water injection hole along the axial direction is formed in the puncture needle, the front end of the water injection hole extends forwards to the front end of the puncture needle and forms a water injection hole outlet, and the rear end of the water injection hole extends backwards to the rear end of the puncture needle and forms a water injection hole inlet. After the EUS is punctured for the first time to enter the target part, the fixing anchor is pushed out to be clamped into the tissue, the outer tube is fixed, and multiple times of puncturing of the target point are achieved.

Description

Anchor type fixed EUS puncture needle

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to fixed EUS pjncture needle of anchor formula.

Background

Ultrasonic Endoscope (EUS) is a digestive tract examination technology combining endoscope and ultrasound, a miniature high-frequency ultrasonic probe is arranged at the top end of the endoscope, after the endoscope is inserted into a body cavity, when the endoscope directly observes digestive tract mucous membrane lesion, real-time scanning can be carried out by utilizing ultrasound under the endoscope, histological characteristics of the hierarchical structure of the gastrointestinal tract and ultrasound images of surrounding adjacent visceral organs can be obtained, and therefore diagnosis level of the endoscope and ultrasound is further improved.

The conventional ultrasonic endoscope puncture needle is a basic structure of a handle, an outer tube and a needle head, and when the puncture needle is used, an operator pushes the handle and the outer tube in vitro to make the needle head of the puncture needle protrude from the outer tube to perform single or multiple puncture actions under ultrasonic positioning. The positioning of tumor and lesion tissue under the ultrasonic endoscope needs a certain foundation, and after the positioning is successful, an operator often cannot perform repeated target puncture at a target central point due to the gastrointestinal peristalsis and other influences of the patient during the puncture action. The relative influence on the positive rate and the tissue quality.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an anchor type fixed EUS puncture needle.

In order to realize the purpose, the utility model discloses a technical scheme is: an anchor-type fixed EUS puncture needle comprising:

the inner wall of the outer pipe is internally provided with a guy cable channel along the axial direction of the outer pipe, a guy cable penetrates through the guy cable channel, the front end of the guy cable is connected with a fixed anchor, and the guy cable channel is not communicated with the inner hole of the outer pipe;

the handle is connected to the rear end of the outer pipe, a sliding ring is arranged on the handle and is in sliding guide fit with the handle, and the rear end of the inhaul cable is connected with the sliding ring; when the sliding ring slides back and forth relative to the handle, the inhaul cable can be pushed and pulled and the fixed anchor is driven to penetrate out of or be retracted into the front end of the inhaul cable channel;

the puncture needle is axially penetrated in the inner hole of the outer tube, a water injection hole is formed in the puncture needle along the axial direction, the front end of the water injection hole forwards extends to the front end of the puncture needle and forms an outlet of the water injection hole, and the rear end of the water injection hole backwards extends to the rear end of the puncture needle and forms an inlet of the water injection hole; when the puncture needle is pushed and pulled, the puncture needle can move back and forth relative to the outer tube, so that the front end of the puncture needle extends out of or is retracted into the front end of the outer tube.

In order to enhance the anchoring firmness, the number of the stay cable channels is at least 2, the stay cable channels are distributed at intervals around the circumference of the inner hole of the outer tube, and the stay cables correspond to the stay cable channels one to one.

Further, the anchor is straight or curved or some other irregular shape.

Furthermore, in order to facilitate control, the puncture needle handle is further included, a through hole penetrating through the front end face and the rear end face of the puncture needle handle is formed in the puncture needle handle, the handle extends backwards from the rear portion of the puncture needle and is connected with the puncture needle handle, a water injection hole is communicated with the through hole formed in the puncture needle handle in a sealing mode, and the through hole formed in the puncture needle handle is used for inserting a water injection device or a sampling and sucking device.

Furthermore, the puncture needle comprises a needle head positioned at the front end and a needle core rod coaxially connected to the rear end of the needle head, and the surface of the needle core rod is coated with a film coating layer.

Furthermore, the inhaul cable is made of metal or plastic; and/or the material of the fixing anchor is metal or plastic.

Compared with the prior art, the utility model discloses the technological effect who gains does: the utility model discloses an add the cable passageway on the outer tube, wear to establish the cable in the cable passageway, the cable front end is connected the anchor, thereby realize that EUS punctures the first time and gets into the target site after, through the propelling movement cable, push the anchor out the front end of cable passageway and then the anchor card is gone into the tissue, carry out the effective fixed of outer tube, thereby realize the multiple puncture of target point, in order to carry out the sample of multiple tissue at the target point (namely repeated multiple target puncture at a target center), avoid influencing the positive rate; the inner hole of injecing cable passageway and outer tube does not communicate is for making fixed anchor position more accurate, prevents that relative movement between them can cause the influence, has device simple structure, the effectual characteristics of convenient to use.

Drawings

Fig. 1 is a schematic structural view of a fixable EUS puncture needle (anchor not extended) in an embodiment of the present invention.

Fig. 2 is a schematic structural view (anchoring state) of the fixable EUS puncture needle in the embodiment of the present invention.

Fig. 3 is a schematic structural view of a fixable EUS puncture needle (anchor puncture state) in an embodiment of the present invention.

Fig. 4 is a sectional view showing the direction a-a of the needle for fixing the EUS needle in the embodiment of the present invention.

Fig. 5 is a sectional view showing an a-a direction of the outer tube for fixing the EUS needle in another embodiment of the present invention.

Fig. 6 is a sectional view showing the direction of the needle B-B of the EUS needle of the present invention.

The reference numbers in the figures are: 1. the novel puncture needle comprises an outer tube, 2 parts of a handle, 3 parts of a sliding ring, 4 parts of a cable, 5 parts of a puncture needle handle, 5-1 parts of a holding part, 5-2 parts of a connecting tube part, 5-3 parts of an inserting part, 6 parts of a water injection hole, 7 parts of a fixed anchor, 8 parts of a needle head, 9 parts of a cable channel and 10 parts of a needle core rod.

Detailed Description

The utility model discloses not confine the following embodiment to, general technical personnel in this field can adopt other multiple embodiment to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The utility model discloses a concrete embodiment is shown in fig. 1 to fig. 6, a EUS pjncture needle is fixed to anchor formula, include along the axial from outer tube 1, handle 2 that left right side in proper order coaxial coupling set up and wear to establish the pjncture needle in outer tube 1 and handle 2 simultaneously along the axial, seted up in the pipe wall of outer tube 1 along the axial cable passageway 9 of outer tube 1, wear to be equipped with cable 4 in the cable passageway 9, the front end of cable 4 is connected with the tie anchor 7, cable passageway 9 and outer tube 1's hole do not communicate. The inhaul cable 4 and the fixed anchor 7 can be made of metal or plastic

A through hole coaxial with the inner hole of the outer tube 1 is formed in the handle 2, a sliding ring 3 is arranged on the handle 2, the sliding ring 3 is in sliding guide fit with the handle 2, and the rear end of the inhaul cable 4 is connected with the sliding ring 3; when the slip ring slides back and forth relative to the handle 2, the pull cable 4 can be pushed and pulled and the fixed anchor 7 is driven to penetrate out of or be retracted into the front end of the pull cable channel 9.

A water injection hole 6 is formed in the puncture needle along the axial direction, the front end of the water injection hole 6 extends forwards to the front end of the puncture needle and forms an outlet of the water injection hole 6, and the rear end of the water injection hole 6 extends backwards to the rear end of the puncture needle and forms an inlet of the water injection hole 6; when the puncture needle is pushed and pulled, the puncture needle can move back and forth relative to the outer tube 1, so that the front end of the puncture needle extends out of or is retracted into the front end of the outer tube 1.

In order to enhance the anchoring firmness, further, the number of the cable channels 9 is at least 2 (for example, fig. 5 shows the outer tube 1 provided with 2 cable channels 9, fig. 4 shows the outer tube 1 provided with 4 cable channels 9), and the cables 4 are distributed around the circumferential direction at intervals, and the cables 4 correspond to the cable channels 9 one by one. The anchor 7 may be regular or irregular in shape, for example straight or curved.

In order to facilitate control, the puncture needle comprises a puncture needle handle 5, through holes penetrating through the front end face and the rear end face of the puncture needle handle 5 are formed in the puncture needle handle 5, a handle 2 extends backwards from the rear portion of the puncture needle and is connected with the front end of the puncture needle handle 5, a water injection hole 6 is communicated with the through hole formed in the puncture needle handle 5 in a sealing mode, and when the puncture needle is used, the rear end of the through hole formed in the puncture needle handle 5 is used for being inserted with a water injection device or a sampling and sucking device. The puncture needle comprises a needle head 8 positioned at the front end and a needle core rod 10 coaxially connected to the rear end of the needle head 8, wherein the surface of the needle core rod 10 is coated with a film coating layer, so that mutual friction is overcome, and the puncture is easy. The needle head 8 can be made of stainless steel or nickel-titanium alloy needle core rod 10, the needle core rod 10 can be made of PTFE, the needle core rod can be connected with the puncture needle handle 5 through a stainless steel or nickel-titanium alloy tube, and the needle core rod 10 can also be bonded with the puncture needle handle 5 through PV glue and the like. The puncture needle handle 5 is an integrally formed part and comprises a connecting tube part 5-2, a holding part 5-1 and an inserting part 5-3 which are sequentially connected from front to back along the axial direction, wherein the connecting tube part 5-2 is used for being connected with the puncture needle core rod 10, the holding part 5-1 is used for pushing and pulling the puncture needle by holding the holding part 5-1 with hands when in use, and the inserting part 5-3 is used for inserting a water injection device or a sample suction device as required.

The application method of the anchor type fixed EUS puncture needle in the embodiment comprises the following steps: the fixed EUS puncture needle of anchor type is firstly sent into the human body through the endoscope channel hole, after the front end is close to the focus, the puncture needle handle 5 is pushed to push the puncture needle to pierce into the target tissue, then the fixed anchor 7 handle 2 is pushed, the cable channel 9 is pushed out fixedly and is clamped into the human body tissue, the outer tube 1 is effectively fixed, thus realizing the multiple piercing of the target spot, carrying out the sampling of multiple tissues at the target spot (namely, the repeated target piercing at a target center), avoiding influencing the positive rate, and having the characteristics of simple structure and convenient and effective use. In the process, a water injection device can be selected according to the requirement for flushing the target tissue to ensure that the visual field is clear, or a sample suction device is selected.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. An EUS puncture needle is fixed to anchor formula which characterized in that: the method comprises the following steps:

the cable pulling device comprises an outer tube (1), wherein a cable channel (9) along the axial direction of the outer tube (1) is formed in the tube wall of the outer tube (1), a cable (4) penetrates through the cable channel (9), the front end of the cable (4) is connected with a fixed anchor (7), and the cable channel (9) is not communicated with an inner hole of the outer tube (1);

the handle (2) is connected to the rear end of the outer tube (1), a sliding ring (3) is arranged on the handle (2), the sliding ring (3) is matched with the handle (2) in a sliding and guiding mode, and the rear end of the inhaul cable (4) is connected with the sliding ring (3); when the slip ring slides back and forth relative to the handle (2), the pull cable (4) can be pushed and pulled and the fixed anchor (7) is driven to penetrate out of or be retracted into the front end of the pull cable channel (9);

the puncture needle is axially penetrated in the inner hole of the outer tube (1), a water injection hole (6) is formed in the puncture needle along the axial direction, the front end of the water injection hole (6) extends forwards to the front end of the puncture needle and forms an outlet of the water injection hole (6), and the rear end of the water injection hole (6) extends backwards to the rear end of the puncture needle and forms an inlet of the water injection hole (6); when the puncture needle is pushed and pulled, the puncture needle can move back and forth relative to the outer tube (1), so that the front end of the puncture needle extends out of or is retracted into the front end of the inner hole of the outer tube (1).

2. The anchor-type fixed EUS puncture needle of claim 1 wherein: the number of the stay cable channels (9) is at least 2, the stay cable channels are distributed around the inner hole of the outer pipe (1) at intervals in the circumferential direction, and the stay cables (4) correspond to the stay cable channels (9) one to one.

3. The anchor-type fixed EUS puncture needle of claim 1 wherein: the fixing anchor (7) is straight or bent.

4. The anchor-type fixed EUS puncture needle of claim 1 wherein: still include pjncture needle handle (5), set up the through-hole that link up the front and back terminal surface of pjncture needle handle (5) in pjncture needle handle (5), handle (2) is extended backward to the rear portion of pjncture needle to be connected with pjncture needle handle (5), and the airtight intercommunication of through-hole of seting up in water injection hole (6) and pjncture needle handle (5), during the use, set up in pjncture needle handle (5) the rear end of through-hole is used for cartridge water injection device or sample suction means.

5. The anchor-type fixed EUS puncture needle of claim 1 wherein: the puncture needle comprises a needle head (8) positioned at the front end and a needle core rod (10) coaxially connected to the rear end of the needle head (8), and a film coating layer is coated on the surface of the needle core rod (10).

6. The anchor-type fixed EUS puncture needle of claim 1 wherein: the inhaul cable (4) is made of metal or plastic; and/or the material of the fixing anchor (7) is metal or plastic.