CN117958917A - Closed bypass connector and coaxial needle - Google Patents

Abstract

The invention provides a closed bypass connector and a coaxial needle, comprising: the connector comprises a connector body, wherein two ends of the connector body are respectively provided with a mounting end and an inserting end, the mounting end of the connector body is provided with a mounting hole, and the inserting end of the connector body is provided with a receiving hole; the bottom of the mounting hole is provided with a guide piece, the guide piece is provided with a guide through hole, and the guide through hole is communicated with the bearing hole; the outer side surface of the joint body is also provided with a connector, the connector is provided with a connecting part through hole, and the connecting part through hole is communicated with the guide through hole; the sealing piece is arranged in the bearing hole, a notch part is arranged on the sealing piece, and the notch part is opposite to the guide through hole. The closed bypass joint can prevent blood and the like from flowing out of the body, and can realize the effect of sucking abnormal bleeding.

Description

Closed bypass connector and coaxial needle

Technical Field

The invention relates to the technical field of puncture devices, in particular to a closed bypass connector and a coaxial needle.

Background

Before tumor treatment, a biopsy needs to be punctured to identify the property and the development stage, and the current common coaxial biopsy technique is a cutting biopsy mode, wherein the coaxial needle comprises a sheath tube and a needle core which can be inserted into the sheath tube, in the biopsy process, the coaxial needle firstly punctures to the vicinity of a tumor, the needle core of the coaxial needle is pulled out, the sheath tube of the coaxial needle is reserved in a patient, and then the biopsy needle is inserted through the sheath tube to cut and sample the tumor at the far end of the sheath tube. The cutting process is difficult to completely avoid the blood vessel and the trachea, so that complications such as bleeding and pneumothorax are easily caused, the bleeding can lead to the outflow of blood through a sheath tube or spread in a body, and the pneumothorax leads to the pulmonary compression and dyspnea of a patient. If a vein is cut, it may also cause gases to enter the blood and cause a gas embolism. In addition, in the combined biopsy and ablation of tumors, in order to avoid two punctures of biopsy and ablation and further cause bleeding, metastasis, pneumothorax and other complications, a coaxial needle is often used for establishing a single channel for biopsy and ablation in clinic. The coaxial needle used at present is mostly an open sheath tube, and after biopsy sampling bleeding, blood can flow out from the sheath tube, so that the operating table surface is polluted, a lot of inconvenience is brought to the operation, and the open sheath tube can possibly lead to the entering of external air into the blood to cause air embolism. How to design a connection structure which can form a closed structure after being connected with an open sheath tube and can suck abnormal bleeding is a problem which needs to be solved by a person skilled in the art.

Disclosure of Invention

In view of the above-described drawbacks of the prior art, an object of the present invention is to provide a closed bypass connector and a coaxial needle capable of forming a closed structure after connection with an open sheath and sucking abnormal bleeding, for solving the above-described problems in the prior art.

In order to solve the above technical problems, the present invention provides a closed bypass joint, including:

The connector comprises a connector body, wherein two ends of the connector body are respectively provided with a mounting end and an inserting end, the mounting end of the connector body is provided with a mounting hole, and the inserting end of the connector body is provided with a receiving hole; the bottom of the mounting hole is provided with a guide piece, the guide piece is provided with a guide through hole, and the guide through hole is communicated with the bearing hole; the outer side surface of the joint body is also provided with a connector, the connector is provided with a connecting part through hole, and the connecting part through hole is communicated with the guide through hole;

The sealing piece is arranged in the bearing hole, a notch part is arranged on the sealing piece, and the notch part is opposite to the guide through hole.

Preferably, the airtight bypass joint further comprises a sealing pressing piece, wherein the sealing pressing piece is arranged in the bearing hole and presses on the sealing piece, an axial passage opening is formed in the sealing pressing piece, and the axial passage opening and the guide through hole are coaxially arranged.

Preferably, the connector may be connected to one end of a connection pipe, and the other end of the connection pipe may be connected to a valve.

The invention also relates to a coaxial needle comprising: a sheath component, a needle core component which can penetrate into the sheath component and the airtight bypass joint; the sheath component is mountable on the mounting hole; the sheath component comprises a sheath tube seat and a puncture sheath connected with the front end of the sheath tube seat, and the sheath tube seat is provided with seat external threads; the wall of the mounting hole is provided with joint part internal threads; the external threads of the seat body are connected with the internal threads of the joint part; the core element is penetratable in the sheath element.

The airtight bypass joint and the coaxial needle have the following beneficial effects:

When the airtight bypass joint is used, the guide through hole of the joint body is communicated with the bearing hole, the sealing element is arranged in the bearing hole, the joint is connected with the valve through the connecting pipe, the sheath pipe part of the coaxial needle is arranged on the mounting hole, and the sealing effect of the sealing element enables the sheath pipe part and the airtight bypass joint to form an airtight structure; the guide through hole and the receiving hole in the closed bypass joint form a joint pore canal, the sheath pore canal in the sheath pipe component and the joint pore canal of the closed bypass joint form a treatment channel, the needle core component can reach a focus for treatment through the treatment channel, and the sealing component can prevent blood and the like from flowing out of the body; the connector can be connected with a connecting pipe, and liquid and gas can be discharged out of the body through the connecting pipe, so that the effect of abnormal bleeding during suction can be realized by using the closed bypass connector; the closed bypass joint is simple to operate, meanwhile, the burden of a patient can be reduced, meanwhile, the operation difficulty of a user is simplified, a doctor can perform multiple biopsies through a treatment channel established by the sheath pipe component and the closed bypass joint, the treatment channel is used for ablation, multiple punctures are avoided, and the working strength of the doctor is reduced.

Drawings

Fig. 1 is a schematic view showing the internal structure of the coaxial needle of the present embodiment.

Fig. 2 is a schematic diagram showing the internal structure of the coaxial needle when the closed bypass joint is connected to the connecting pipe.

Fig. 3 is a schematic diagram showing the internal structure of the airtight bypass joint of the coaxial needle of the present embodiment.

Fig. 4 shows a schematic structural view of a seal of the closed bypass joint of the coaxial needle of the present embodiment.

Fig. 5 shows a flow chart of the coaxial needle of the present embodiment in use.

Description of the reference numerals

100. Joint body

110. Mounting hole

111. Joint internal thread

120. Bearing hole

130. Guide piece

131. Guide through hole

140. Connector head

141. Through hole of connecting part

150. Sealing pressing piece

151. Axial passage opening

200. Sealing element

210. Scribing part

300. Sheath tube component

310. Sheath tube seat

311. External screw thread of seat

320. Puncture sheath

400. Connecting pipe

500. Valve

600. Needle core component

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.

Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

As shown in fig. 1 to 5, the closed bypass joint of the present embodiment includes:

The connector comprises a connector body 100, wherein two ends of the connector body 100 are respectively provided with a mounting end and an inserting end, the mounting end of the connector body 100 is provided with a mounting hole 110, and the inserting end of the connector body 100 is provided with a receiving hole 120; the bottom of the mounting hole 110 is provided with a guide piece 130, the guide piece 130 is provided with a guide through hole 131, and the guide through hole 131 is communicated with the receiving hole 120; the outer side surface of the joint body 100 is also provided with a joint 140, the joint 140 is provided with a connecting part through hole 141, and the connecting part through hole 141 is communicated with the guide through hole 131;

The seal 200 is provided in the receiving hole 120, and the seal 200 is provided with a notch 210, and the notch 210 is provided so as to face the guide through hole 131.

When the airtight bypass joint is used, the guide through hole 131 of the joint body 100 is communicated with the receiving hole 120, the sealing element 200 is arranged in the hole bottom of the receiving hole 120, the joint 140 is connected with the connecting pipe 400, the sheath pipe component 300 of the coaxial needle is arranged on the mounting hole 110, and the sealing effect of the sealing element 200 ensures that the sheath pipe component 300 and the airtight bypass joint form an airtight structure; the guide through hole 131 and the receiving hole 120 in the closed bypass joint form a joint duct, the sheath duct in the sheath component 300 and the joint duct of the closed bypass joint form a treatment channel through which the needle core component 600 can reach a focus for treatment, and the sealing component 200 can prevent blood and the like from flowing out of the body; the connection head 140 may be connected to a connection pipe, and the liquid and gas may be discharged outside the body through the connection pipe 400, so that the effect of abnormal bleeding due to suction can be achieved by using the closed bypass connection.

The closed bypass joint can be connected with the open sheath component 300 to form a closed structure, and is matched with the existing coaxial needle for use, so that the operation is simple, the burden of a patient can be reduced, the operation difficulty of a user is simplified, for example, in the scenes of biopsy, ablation and the like of tumors, a doctor can perform multiple biopsies through an established channel, and the channel is used for ablation, multiple punctures are avoided, and the working strength of the doctor is reduced.

When the needle core member 600 is not penetrated into the sealing member 200, the notched portion 210 of the sealing member 200 is in a closed state, and the sealing member 200 can isolate the inner space and the outer space of the airtight bypass joint. The sealing member 200 may be made of material such as nitrile or silicone.

When the core member 600 such as an ablation needle is used, the core member 600 passes through the notch 210 of the seal member 200, and the core member 600 expands the seal member 200, and the tumor ablation treatment is performed by sealing the joint hole of the bypass joint and the sheath hole of the sheath member 300, so as to reach the focus part. At this point, the seal 200 in the closed bypass joint is wrapped around the core member 600, preventing patient blood from flowing outside the body. In this embodiment, the core member 600 may be an ablation needle, a biopsy needle, or a suction needle, and each core member 600 may be treated by passing a treatment channel established between the sheath member 300 and the closed bypass connector to the lesion, and the sealing member 200 may be used to seal against blood and the like flowing out of the body. When each type of the needle core component 600 is used, the closed bypass joint is matched with the implementation, so that the exchange is easy to realize, the operation is simple, and the application range is wide.

The airtight bypass joint further comprises a seal pressing member 150 disposed in the receiving hole 120, the seal pressing member 150 is pressed against the seal member 200, an axial passage port 151 is provided on the seal pressing member 150, and the axial passage port 151 is disposed coaxially with the guide through hole 131.

The packing follower 150 provides a certain preload to the packing 200 to limit movement of the packing 200; may be attached to the receiving hole 120 of the connector body 100 by bonding, screwing, welding, or the like. An axial port 151 provided in the packing follower 150 provides access to a core member 600 of a biopsy needle, ablation needle, or the like. The seal 200 can prevent gas, liquid, etc. from flowing through the guide through-hole 131 in the joint body 100 and the axial passage port 151 in the packing follower 150.

The coaxial needle includes: sheath component 300, needle core component 600 that can be threaded into sheath component 300, and a closed bypass joint; sheath component 300 may be mounted on mounting hole 110; sheath component 300 comprises sheath holder 310 and puncture sheath 320 connected to the front end of sheath holder 310, sheath holder 310 is provided with holder external thread 311; the wall of the mounting hole 110 is provided with joint part internal threads 111; the external screw thread 311 of the seat body is connected with the internal screw thread 111 of the joint part; the needle core component 600 may be threaded into the sheath component 300. The puncture sheath 320 is connected to the sheath holder 310 by means of adhesion or the like, and a sheath channel is provided in the puncture sheath 320, the sheath channel being provided for the passage of a needle core member 600 such as an ablation needle. In this embodiment, the sheath hub 310 is sleeved on the guide 130, so that the connection between the sheath hub 310 and the airtight bypass connector is more stable. When the sheath hub 310 is connected to the airtight bypass connector, the central axis of the sheath aperture is collinear with the central axis of the guide through hole 131.

The connection head 140 may be connected to one end of the connection pipe 400, and the other end of the connection pipe 400 may be connected to the valve 500. The valve 500 has a closing function, and can prevent the blood of a patient from flowing outside; the valve 500 is provided with an interface which can be connected with a sucking and drug-feeding device, wherein the sucking and drug-feeding device can be a syringe, and a doctor can extract redundant blood, gas and the like of a patient through the syringe; the doctor can also administer medicine into the patient through the injector, and when cryoablating lung tumor, the normal saline can be injected into the ablation area by using the injector, and the method can improve the treatment effect and is beneficial to observing the size of the ablation area. The structural form of the valve 500 is not limited and can be selected according to the use situation.

The method for using the coaxial needle of the embodiment comprises the following steps:

1) The operator firstly punctures the coaxial needle to the vicinity of the tumor;

2) The core member 600 of the coaxial needle is then withdrawn;

3) The tail end of the coaxial needle is provided with a closed bypass joint, namely, the external screw thread 311 of the seat body of the coaxial needle is connected with the internal screw thread 111 of the joint part of the closed bypass joint;

4) The user inserts a biopsy needle from the closed bypass joint to sample;

5) When bleeding or pneumothorax occurs in the sampling process, the valve 500 is opened, the syringe sucks blood or gas, the negative pressure state of the pipeline is maintained, and then the biopsy needle is pulled out; when no bleeding or pneumothorax phenomenon exists in the sampling process, the biopsy needle is directly pulled out;

6) After the biopsy needle is pulled out, when the joint ablation is needed, on the basis that the closed bypass joint is connected with the coaxial needle, the ablation needle can be inserted into the closed bypass joint to start the ablation operation, and after the ablation is finished, the ablation needle is pulled out to observe whether bleeding or pneumothorax occurs; when the combined ablation is not needed, observing whether bleeding or pneumothorax occurs;

7) When the bleeding or pneumothorax phenomenon is observed, the valve 500 is opened, the valve 500 is connected with a syringe, the syringe sucks blood, and simultaneously, a treatment channel established by the sheath component 300 and the closed bypass joint is pushed into the gelatin sponge to stop bleeding, and then the sheath component 300 is pulled out; when pneumothorax occurs, the sheath tube part 300 of the coaxial needle is stirred to enable the distal end of the sheath tube part 300 to be positioned in the thoracic cavity, the valve 500 is opened, the valve 500 is connected with the injector, the injector sucks gas, for the sustainable pneumothorax, a drainage tube can be placed or sealing glue can be injected, and then the sheath tube part 300 is pulled out; when neither bleeding nor pneumothorax occurs, the sheath member 300 is pulled out;

8) After sheath member 300 is pulled out, the operation is ended.

The closed bypass connector is of an independent structure, and can be compatible with the existing coaxial needle, so that abnormal bleeding can be timely sucked, air embolism can be avoided, coaxial biopsy and ablation can be safely performed, and most importantly, the closed bypass connector can be matched with the existing coaxial needle for use, the cost of instruments is greatly reduced, and the economic burden of a patient is reduced.

In conclusion, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (4)

1. A closed bypass joint, comprising:

The connector comprises a connector body (100), wherein two ends of the connector body (100) are respectively provided with a mounting end and an inserting end, the mounting end of the connector body (100) is provided with a mounting hole (110), and the inserting end of the connector body (100) is provided with a receiving hole (120); a guide piece (130) is arranged at the bottom of the mounting hole (110), a guide through hole (131) is arranged on the guide piece (130), and the guide through hole (131) is communicated with the bearing hole (120); the outer side surface of the joint body (100) is also provided with a joint head (140), the joint head (140) is provided with a connecting part through hole (141), and the connecting part through hole (141) is communicated with the guide through hole (131);

And a seal (200) provided in the receiving hole (120), wherein a notch (210) is provided on the seal (200), and the notch (210) is provided so as to face the guide through hole (131).

2. The hermetic bypass joint according to claim 1, wherein: the sealing device further comprises a sealing pressing piece (150) which is arranged in the bearing hole (120), the sealing pressing piece (150) is pressed on the sealing piece (200), an axial passage opening (151) is formed in the sealing pressing piece (150), and the axial passage opening (151) and the guide through hole (131) are coaxially arranged.

3. The hermetic bypass joint according to claim 1, wherein: the connector (140) can be connected with one end of the connecting pipe (400), and the other end of the connecting pipe (400) can be connected with the valve (500).

4.A coaxial needle, comprising: a sheath component (300), a core component (600) that is penetratable in the sheath component (300) and a closed bypass joint according to any one of claims 1 to 3; the sheath member (300) is mountable on the mounting hole (110); the sheath component (300) comprises a sheath holder (310) and a puncture sheath (320) connected with the front end of the sheath holder (310), wherein the sheath holder (310) is provided with a holder external thread (311); the hole wall of the mounting hole (110) is provided with joint part internal threads (111); the external screw thread (311) of the seat body is connected with the internal screw thread (111) of the joint part; the core component (600) is penetrable into the sheath component (300).