CN223336177U

CN223336177U - Ultrasonic endoscope injection needle

Info

Publication number: CN223336177U
Application number: CN202422115762.8U
Authority: CN
Inventors: 李坪; 孙海滨; 王新如; 林昆; 冯相青
Original assignee: Nanjing Fmt Medical Co ltd; Beijing Ditan Hospital
Current assignee: Nanjing Fmt Medical Co ltd; Beijing Ditan Hospital
Priority date: 2024-08-30
Filing date: 2024-08-30
Publication date: 2025-09-16
Anticipated expiration: 2034-08-30

Abstract

The utility model discloses an ultrasonic endoscope injection needle, which particularly relates to the technical field of medical equipment, and comprises an outer tube assembly, a needle tube assembly and a core rod, wherein the outer tube assembly is sleeved outside one end of the core rod and can move along the axial direction of the core rod, the needle tube assembly comprises a needle tube capable of sequentially penetrating through the core rod and the outer tube assembly and a rear handle connected with the needle tube, the needle tube is provided with a needle tip part, a connecting part and a fixing part, two ends of the connecting part are respectively and fixedly connected with the needle tip part and the fixing part, the needle tip part is used for injecting gel into a bleeding point, the fixing part is fixedly connected with the rear handle, the inner diameter of the needle tip part is smaller than that of the connecting part, and the inner diameter of the connecting part is smaller than that of the fixing part. The utility model can reduce the blocking risk, reduce the blocking length of the needle tube, reduce the dredging time, avoid replacing the ultrasonic endoscope injection needle, shorten the operation time and reduce the medical cost.

Description

Ultrasonic endoscope injection needle

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an ultrasonic endoscope injection needle.

Background

The disposable endoscope uses an ultrasonic endoscope injection needle and a soft endoscope, is used for diagnosis and sampling of gastrointestinal mucosa injury and outer wall injury, and is used for puncturing tissue for sampling under ultrasonic guidance, and tissue adhesive injection is carried out by matching the endoscope to sometimes treat varicose lesions and venous blood vessel bleeding so as to close bleeding points.

However, when varicose lesions and venous hemorrhages are matched with an endoscope to inject tissue adhesives to close bleeding points, the condition that a needle tube of an ultrasonic endoscope injection needle is blocked after tissue gel injection often occurs, if the bleeding points need secondary or multiple hemostatic operations, the needle tube needs to be dredged for a long time, but when the blocked parts are positioned in the middle of the needle tube, the dredging is difficult, the ultrasonic aspiration biopsy needle used by a disposable endoscope needs to be replaced to perform operation again, the operation time is prolonged, the operation risk is increased, and meanwhile, the treatment cost of a patient is increased.

Disclosure of utility model

The utility model aims to provide an ultrasonic endoscope injection needle so as to solve the problems in the prior art, reduce the blocking risk, reduce the blocking length of a needle tube, reduce the dredging time, avoid replacing the ultrasonic endoscope injection needle, shorten the operation time and reduce the medical cost.

In order to achieve the above object, the present utility model provides the following solutions:

The utility model provides an ultrasonic endoscope injection needle which comprises an outer tube assembly, a needle tube assembly and a core rod, wherein the outer tube assembly is sleeved outside one end of the core rod and can move relative to the core rod along the axial direction of the core rod, the needle tube assembly comprises a needle tube and a rear handle fixedly connected with the needle tube, the rear handle is sleeved outside the other end of the core rod and can sequentially penetrate through the core rod and the outer tube assembly, the rear handle can move relative to the core rod along the axial direction of the core rod, the needle tube is provided with a needle tip part, a connecting part and a fixing part, two ends of the connecting part are respectively and fixedly connected with the needle tip part and the fixing part, the needle tip part is used for injecting gel to a bleeding point, the fixing part is fixedly connected with the rear handle, the inner diameter of the needle tip part is smaller than that of the connecting part, and the inner diameter of the connecting part is smaller than that of the fixing part.

Preferably, the inner diameter of the needle tip is 0.7mm, the inner diameter of the connecting portion is 0.9mm, and the inner diameter of the fixing portion is 1.3mm.

Preferably, the length of the needle tip is 3-5mm.

Preferably, the outer tube assembly comprises an outer tube and a front handle fixedly connected with the outer tube, one end of the front handle, which is far away from the outer tube, is sleeved outside one end of the core rod, and the front handle and the outer tube can move along the axial direction of the core rod relative to the core rod.

Preferably, the outer side wall of the core rod is provided with a limiting convex ring, the front handle is arranged on one side of the limiting convex ring, and the rear handle is arranged on the other side of the limiting convex ring.

Preferably, a first graduated scale and a second graduated scale are arranged on the outer side wall of the core rod, and the first graduated scale and the second graduated scale are respectively arranged on two sides of the limiting convex ring.

Preferably, the outer tube assembly further comprises a locking member for limiting movement of the outer tube assembly relative to the core pin.

Preferably, one end of the rear handle, which is far away from the needle tube, is provided with a luer head for connecting an injection instrument.

Compared with the prior art, the utility model has the following technical effects:

the utility model provides an ultrasonic endoscope injection needle, which is characterized in that a needle tube is provided with a needle tip part, a connecting part and a fixing part, wherein the inner diameter of the needle tip part for injecting gel to a bleeding point is smaller than that of the connecting part, the inner diameter of the connecting part is smaller than that of the fixing part, injected gel liquid is injected from the fixing part to the needle tip part, if the needle tip part with the smallest inner diameter is blocked, the needle tube is prevented from being blocked at first, the blocking part is shorter, the needle tube is convenient to clean in an operation, the operation time can be shortened, the operation risk is reduced, the replacement of the ultrasonic endoscope injection needle is avoided, and the medical cost is reduced.

Drawings

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

FIG. 1 is a schematic view of the structure of an ultrasonic endoscopic injection needle;

fig. 2 is a schematic view of the structure of a needle tube of an ultrasonic aspiration biopsy needle.

In the drawing, the needle tube comprises a 1-needle tube, a 11-needle tip part, a 12-connecting part, a 13-fixing part, a 2-outer tube, a 3-front handle, a 4-locking piece, a 5-rear handle, a 6-core rod, a 7-luer head, an 8-injection instrument and a 9-limit convex ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

The utility model provides an ultrasonic endoscope injection needle, which is shown in fig. 1, and comprises an outer tube assembly, a needle tube assembly and a core bar 6, wherein the outer tube assembly is sleeved outside one end of the core bar 6 and can move relative to the core bar 6 along the axial direction of the core bar 6, the needle tube assembly comprises a needle tube 1 and a rear handle 5 fixedly connected with the needle tube 1, the rear handle 5 is sleeved outside the other end of the core bar 6, the needle tube 1 can sequentially pass through the core bar 6 and the outer tube assembly, the rear handle 5 can move relative to the core bar 6 along the axial direction of the core bar 6 and is used for adjusting the penetration depth of the needle tube 1, the needle tube 1 is provided with a needle tip 11, a connecting part 12 and a fixing part 13, two ends of the connecting part 12 are fixedly connected with the needle tip 11 and the fixing part 13 respectively, the needle tip 11 is used for injecting gel to a bleeding point, the fixing part 13 is fixedly connected with the rear handle 5, the inner diameter of the needle 11 is smaller than the inner diameter of the connecting part 12, and the inner diameter of the connecting part 12 is smaller than the inner diameter of the tip 13. When using ultrasonic endoscope injection needle, connect injection apparatus 8 in luer 7, the gel liquid of injection is injected to tip portion 11 from fixed part 13, because the internal diameter of tip portion 11 is minimum, when taking place to block up, tip portion 11 is the jam first, and then avoided needle tubing 1 whole section to block up, and the jam position is shorter, the convenience is cleared up needle tubing 1 in the operation, need not carry out the step of changing ultrasonic endoscope injection needle and repeatedly insert the scope and find the operation position and reconnection supporting apparatus again, the risk that the operation time brought has greatly been reduced, simultaneously also reduced medical personnel's complexity and fatigue degree of operation, can shorten operation time, reduce the operation risk, the more probable help patient reduces medical expenses.

In the embodiment of the present utility model, it is further preferable that the inner diameter of the needle tip 11 is 0.7mm, the inner diameter of the connecting portion 12 is 0.9mm, and the inner diameter of the fixing portion 13 is 1.3mm.

It is further preferred in the embodiment of the present utility model that the length of the needle tip 11 is 3-5mm. The dredging section is short in length, so that the tissue penetration can be guaranteed, and the blocking length can be reduced.

It is further preferred in the embodiment of the present utility model that the outer tube assembly includes an outer tube 2 and a front handle 3 fixedly connected to the outer tube 2, one end of the front handle 3 remote from the outer tube 2 is sleeved outside one end of the core rod 6, and the front handle 3 and the outer tube 2 can move relative to the core rod 6 along the axial direction of the core rod 6.

In the embodiment of the utility model, it is further preferable that the outer side wall of the core bar 6 is provided with a limiting convex ring 9, the front handle 3 is arranged on one side of the limiting convex ring 9, the rear handle 5 is arranged on the other side of the limiting convex ring 9, the outer side wall of the core bar 6 is provided with a first graduated scale and a second graduated scale, and the first graduated scale and the second graduated scale are respectively arranged on two sides of the limiting convex ring 9. During the operation, the front handle 3 and the rear handle 5 can adjust the length of the needle tube 1 according to the scale.

It is further preferred in an embodiment of the present utility model that the outer tube assembly further comprises a locking member 4, the first locking member 4 being adapted to limit movement of the outer tube 2 assembly relative to the core pin 6. The locking piece 4 locks, so that the needle outlet length of each time is controlled during multiple punctures. Preferably, the locking member 4 is a tightening nut.

It is further preferred in the embodiment of the utility model that the end of the rear handle 5 remote from the needle cannula 1 is provided with a luer head 7 for connection to an injection device 8.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided herein to facilitate understanding of the principles and embodiments of the present utility model and to provide further advantages and practical applications for those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims

1. An ultrasonic endoscopic injection needle, characterized in that it comprises an outer tube assembly, a needle tube assembly and a core rod; the outer tube assembly is sleeved over one end of the core rod and can move relative to the core rod along the axial direction of the core rod; the needle tube assembly comprises a needle tube and a rear handle fixedly connected to the needle tube, the rear handle is sleeved over the other end of the core rod, and the needle tube can sequentially pass through the core rod and the outer tube assembly, the rear handle can move relative to the core rod along the axial direction of the core rod, the needle tube has a needle tip, a connecting portion and a fixing portion, the two ends of the connecting portion are respectively fixedly connected to the needle tip and the fixing portion, the needle tip is used to inject gel into the bleeding point, the fixing portion is fixedly connected to the rear handle, the inner diameter of the needle tip is smaller than the inner diameter of the connecting portion, and the inner diameter of the connecting portion is smaller than the inner diameter of the fixing portion, the outer tube assembly comprises an outer tube and a front handle fixedly connected to the outer tube, the end of the front handle away from the outer tube is sleeved over one end of the core rod, and the front handle and the outer tube can move relative to the core rod along the axial direction of the core rod.

2. The ultrasonic endoscopic injection needle according to claim 1, characterized in that the inner diameter of the needle tip is 0.7 mm, the inner diameter of the connecting portion is 0.9 mm, and the inner diameter of the fixing portion is 1.3 mm.

3. The ultrasonic endoscopic injection needle according to claim 1, wherein the length of the needle tip is 3-5 mm.

4. The ultrasonic endoscopic injection needle according to claim 1, characterized in that the outer side wall of the core rod has a limiting convex ring, the front handle is placed on one side of the limiting convex ring, and the rear handle is placed on the other side of the limiting convex ring.

5. The ultrasonic endoscopic injection needle according to claim 4, characterized in that a first scale and a second scale are provided on the outer side wall of the core rod, and the first scale and the second scale are respectively placed on both sides of the limiting protrusion ring.

6. The ultrasonic endoscopic injection needle according to claim 1, wherein the outer tube assembly further comprises a locking member, and the locking member is used to limit the movement of the outer tube assembly relative to the core rod.

7. The ultrasonic endoscopic injection needle according to claim 1, characterized in that a Luer head for connecting to an injection device is provided at one end of the rear handle away from the needle tube.