Integrated EUS-BD special puncture needle

Abstract

The utility model relates to the technical field of medical instruments, and discloses an integrated EUS-BD special puncture needle which comprises a center ring, a hollow pipe is fixedly connected to the interior of the center ring, the two sides of the hollow pipe are fixedly connected with a first handle and a second handle through locking mechanisms respectively, one side of the second handle is fixedly connected with an outer pipe, and the other side of the outer pipe is fixedly connected with an inner pipe. The other side of the outer tube is fixedly connected with a cutting knife head, a metal guide wire is fixedly connected into the first handle, the other end of the metal guide wire extends into the outer tube and is fixedly connected with a puncture needle, and the outer surface of the second handle is fixedly connected with an electrode plug. According to the device, the puncture needle and the incision knife head can be integrally designed, so that the device can complete the operations of puncture, radiography, guide wire placement, puncture path expansion and guide wire super-selection under the condition that accessories are not exchanged, and the occurrence rate of complications is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is integrated EUS-BD special puncture needle. BACKGROUND

[0002] Endoscopic ultrasound-guided biliary drainage (EUS-BD) has been in existence for more than 20 years, and it is one of the important means for treating biliary diseases. Due to the high technical difficulty, there are few medical units currently carrying out this technology. EUS-BD needs to be performed in large endoscopic treatment centers with rich operation experience, and strictly grasping the indications of EUS-BD is one of the prerequisites for improving the technical success rate.

[0003] EUS-BD is still a relatively complex operation in biliary and pancreatic endoscopy, and the difficulty is not only due to the high technical requirements, but also due to the complex steps and low fault tolerance, which can easily cause serious complications.

[0004] The first step of EUS-BD is puncture and contrast, and then a guide wire is inserted and the puncture path is expanded. However, due to the patient's respiratory movement and heartbeat, the complicated operation steps may cause the guide wire to come out at any time. After the guide wire comes out, the ultrasound vision will be poor due to the gas entering the hepatogastric space, and the bile duct will become thin due to the decompression of bile, which will increase the difficulty of re-puncture. Therefore, we propose a cystotome and ultrasound puncture needle integrated surgical instrument. SUMMARY

[0005] The utility model discloses a integrated EUS-BD special puncture needle, solved the problem that the background art has proposed.

[0006] The integrated EUS-BD special puncture needle provided by the embodiment of the application comprises a center ring, a hollow pipe is fixedly connected to the inside of the center ring, a first handle and a second handle are fixedly connected to the two sides of the hollow pipe through locking mechanisms, an outer pipe is fixedly connected to one side of the second handle, a cutting knife head is fixedly connected to the other side of the outer pipe, a metal guide wire is fixedly connected to the inside of the first handle, the other end of the metal guide wire extends to the inside of the outer pipe and is fixedly connected with a puncture needle, when the first handle and the second handle are in an unlocked state with the hollow pipe, the first handle and the second handle are in sliding connection with the hollow pipe, and a sealing sleeve is arranged at the connection between the first handle, the second handle and the hollow pipe.

[0007] By adopting the technical scheme, the device can be integrally designed with the puncture needle and the incision knife head, so that the device can complete the operations of puncture, imaging, guide wire placement, puncture path expansion and guide wire superselection without accessory exchange, thereby greatly reducing the incidence of complications.

[0008] Optionally, the locking mechanism comprises a plurality of positioning grooves formed on the outer surface of the hollow tube and a plug rod movably mounted on the outer surface of the first handle and the second handle, the bottom of the plug rod is fixedly connected with a positioning block, and the top of the plug rod is fixedly connected with a circular plate, the outer surface of each of the two plug rods between the first handle and the circular plate and between the second handle and the circular plate is provided with a return spring.

[0009] By adopting the technical scheme, the device can quickly lock the first handle and the second handle after length adjustment of the outer tube and the puncture needle through the locking mechanism, so that the puncture and incision range of the device can be greatly improved, and the practicability of the device is greatly improved.

[0010] Optionally, the outer surface of the second handle is fixedly connected with an electrode plug, and the electrode plug is electrically connected with the incision knife head through a wire.

[0011] By adopting the technical scheme, the device can energize the incision knife head through the electrode plug and the wire, so that the incision knife head can incise the puncture part.

[0012] Optionally, the incision knife head is an annular metal wire knife head made of shape memory alloy.

[0013] By adopting the technical scheme, the incision knife head has a certain deformation recovery ability.

[0014] Optionally, the positioning block and the positioning groove are both circular truncated cone structures, and the positioning block is matched with the positioning groove.

[0015] By adopting the technical scheme, the locking effect of the device on the first handle and the second handle is better.

[0016] Compared with the prior art, the beneficial effects of the technical scheme of the present application are as follows:

[0017] 1. The technical scheme of the present application is provided with a first handle, a second handle, a center ring, a hollow tube, an outer tube, a puncture needle, an incision knife head, a metal guide wire and an electrode plug, so that the device can be integrally designed with the puncture needle and the incision knife head, so that the device can complete the operations of puncture, imaging, guide wire placement, puncture path expansion and guide wire superselection without accessory exchange, thereby greatly reducing the incidence of complications.

[0018] 2. The technical scheme of the application is provided with a positioning groove, a hollow tube, a plug rod, a positioning block, a circular plate, a return spring, a first handle and a second handle, so that when the length of the outer tube and the puncture needle is adjusted, the first handle and the second handle after adjustment can be quickly locked by the locking mechanism, thereby greatly improving the puncture and incision range of the device, and greatly improving the practicality of the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0020] Figure 1 It is a front view of the whole integrated EUS-BD special puncture needle of the application;

[0021] Figure 2 It is a structural schematic view of the inside of the whole integrated EUS-BD special puncture needle of the application;

[0022] Figure 3 It is the integrated EUS-BD special puncture needle of the application Figure 2 It is an enlarged view of A in the middle.

[0023] In the figure: 1, center ring; 2, hollow tube; 3, first handle; 4, second handle; 5, outer tube; 6, incision cutter head; 7, metal guide wire; 8, puncture needle; 9, electrode plug; 10, positioning groove; 11, plug rod; 12, positioning block; 13, circular plate; 14, return spring. DETAILED DESCRIPTION

[0024] Please refer to Figures 1-3 The application provides a technical scheme: an integrated EUS-BD special puncture needle, which comprises a center ring 1, the inside of the center ring 1 is fixedly connected with a hollow tube 2, the two sides of the hollow tube 2 are fixedly connected with a first handle 3 and a second handle 4 through a locking mechanism, one side of the second handle 4 is fixedly connected with an outer tube 5, the other side of the outer tube 5 is fixedly connected with an incision cutter head 6, the inside of the first handle 3 is fixedly connected with a metal guide wire 7, the other end of the metal guide wire 7 extends to the inside of the outer tube 5 and is fixedly connected with a puncture needle 8, wherein when the first handle 3 and the second handle 4 are in an unlocked state with the hollow tube 2, the first handle 3 and the second handle 4 are in sliding connection with the hollow tube 2, and a sealing sleeve is arranged at the connection between the first handle 3, the second handle 4 and the hollow tube 2.

[0025] By adopting the above technical scheme, the puncture needle 8 and the incision cutter head 6 of the device can be designed integrally, so that the device can complete the operations of puncture, radiography, guide wire placement, puncture path expansion and guide wire superselection without exchanging accessories, thereby greatly reducing the incidence of complications.

[0026] In the embodiments of the present application, as shown in Figures 2-3 The locking mechanism comprises a plurality of positioning grooves 10 formed on the outer surface of the hollow tube 2 and a movable insertion rod 11 movably mounted on the outer surface of the first handle 3 and the second handle 4. The bottom of the insertion rod 11 is fixedly connected with a positioning block 12, and the top of the insertion rod 11 is fixedly connected with a circular plate 13. The outer surface of the two insertion rods 11 between the first handle 3 and the circular plate 13 and between the second handle 4 and the circular plate 13 is provided with a reset spring 14.

[0027] By adopting the above technical scheme, when the length of the outer tube 5 and the puncture needle 8 is adjusted, the locking mechanism can quickly lock the first handle 3 and the second handle 4 after adjustment, so that the puncture and incision range of the device can be greatly improved, and the practicability of the device is greatly improved.

[0028] In the embodiments of the present application, as shown in Figure 2 The outer surface of the second handle 4 is fixedly connected with an electrode plug 9, and the electrode plug 9 is electrically connected with the incision cutter head 6 through a wire.

[0029] By adopting the above technical scheme, the incision cutter head 6 can be powered through the electrode plug 9 and the wire, so that the incision cutter head 6 can cut the puncture part.

[0030] In the embodiments of the present application, as shown in Figure 2 The incision cutter head 6 is an annular metal wire cutter head made of shape memory alloy.

[0031] By adopting the above technical scheme, the incision cutter head 6 has a certain deformation recovery ability.

[0032] In the embodiments of the present application, as shown in Figure 3 The positioning block 12 and the positioning groove 10 are both circular truncated cone structures, and the positioning block 12 is matched with the positioning groove 10.

[0033] By adopting the above technical scheme, the locking effect of the first handle 3 and the second handle 4 of the device is better.

[0034] When the cyst puncture operation is performed, the operator can first extend the outer tube 5 into the puncture site of the patient, and use the puncture needle 8 to puncture the cyst. During puncture, the operator can adjust the extension length of the puncture needle 8 according to actual needs. During adjustment, the operator can first pull the circular plate 13 to make the positioning block 12 extracted from the inside of the positioning groove 10 through the insertion rod 11, and then push the first handle 3 to slide along the outer surface of the hollow tube 2, so that the first handle 3 can drive the puncture needle 8 to move horizontally through the metal guide wire 7. When the extension length of the puncture needle 8 is adjusted, the operator releases the force of pulling the circular plate 13, so that the positioning block 12 can be quickly inserted into the inside of the positioning groove 10 under the elastic action of the reset spring 14, thereby quickly positioning the first handle 3, and preventing the first handle 3 from sliding during the operation to cause the operation failure. After puncture, the operator can power the incision knife head 6 through the electrode plug 9 and the wire, so that the incision knife head 6 can cut the puncture part, thereby making the operator more convenient to perform surgical treatment on the puncture site of the cyst. During incision, the operator can also adjust the position of the second handle 4 according to the above principle, so that the second handle 4 can drive the outer tube 5 and the incision knife head 6 to move horizontally, thereby making the device can tightly adhere the incision knife head 6 to the puncture site according to actual needs, thereby greatly improving the incision effect of the device. In addition, the device integrates the puncture needle 8 and the incision knife head 6, so that the device can complete the operations of puncture, imaging, guide wire placement, puncture path expansion and guide wire superselection without exchanging accessories, thereby greatly reducing the incidence of complications.

Claims

1. An integrated EUS-BD dedicated puncture needle comprising a central ring (1), characterized in that: The inside of the center ring (1) is fixedly connected with a hollow tube (2), the two sides of the hollow tube (2) are fixedly connected with a first handle (3) and a second handle (4) through a locking mechanism respectively, one side of the second handle (4) is fixedly connected with an outer tube (5), the other side of the outer tube (5) is fixedly connected with a cutting knife head (6), the inside of the first handle (3) is fixedly connected with a metal guide wire (7), the other end of the metal guide wire (7) extends to the inside of the outer tube (5) and is fixedly connected with a puncture needle (8).

2. The integrated EUS-BD dedicated puncture needle of claim 1, wherein: The locking mechanism comprises a plurality of positioning grooves (10) opened on the outer surface of the hollow tube (2) and a plug rod (11) movably mounted on the outer surface of the first handle (3) and the second handle (4), the bottom of the plug rod (11) is fixedly connected with a positioning block (12), the top of the plug rod (11) is fixedly connected with a circular plate (13), the outer surface of the two plug rods (11) between the first handle (3) and the circular plate (13) and the second handle (4) and the circular plate (13) is provided with a reset spring (14).

3. The integrated EUS-BD dedicated puncture needle of claim 1, wherein: The outer surface of the second handle (4) is fixedly connected with an electrode plug (9), and the electrode plug (9) is electrically connected with the cutting knife head (6) through a wire.

4. The integrated EUS-BD dedicated puncture needle of claim 1, wherein: The cutting knife head (6) is an annular metal wire knife head made of shape memory alloy.

5. The integrated EUS-BD dedicated puncture needle of claim 2, wherein: The positioning block (12) and the positioning groove (10) are both circular truncated cone structures, and the positioning block (12) is matched with the positioning groove (10).

Images