Guide needle capable of breaking threads

Abstract

The invention discloses a guide needle capable of breaking a thread, and belongs to the technical field of medical instruments, the guide needle comprises a guide structure, the guide structure comprises a needle body and a cap body, a connector is arranged in the needle body, a thread cutting assembly is further arranged in the needle body, the thread cutting assembly comprises a cutting piece, an annular channel between the cutting piece and the needle body is a thread leading channel, and the thread leading channel is connected with the cap body. The guide needle comprises a needle body and a cutting part, the needle body is provided with a lead channel, a wire is arranged in the lead channel, a bearing part is arranged on the inner wall of one side close to the tip end of the needle body, and the cutting part comprises a pipe body, a threaded column and a cutting end. However, the operation that the wire rod can be cut off in situ in the deep tissue through the guide needle is utilized, the situation that the tissue is punctured repeatedly or the opening is expanded due to the fact that the wire rod needs to be exposed and broken, and then tissue damage is aggravated is avoided, meanwhile, the operation rhythm is accelerated without waiting for cooperation of an assistant, and the operation efficiency is improved. The implanted wire rod and the guide needle are always located in the tissue and are in little contact with air, so that the probability of possible additional bacterial contamination is reduced, and the sterile state of a surgical area is maintained to the greatest extent in a surgical environment with extremely high sterile operation requirements.

Description

Technical Field

[0001] The invention mainly relates to the technical field of medical devices, in particular to a guide needle with a breakable wire. Background Art

[0002] Medical devices refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials and other similar or related items that are used directly or indirectly on the human body. Medical devices include medical equipment and medical consumables. Their effectiveness is mainly achieved through physical means. Their purpose is to diagnose, prevent, monitor, treat or alleviate diseases, diagnose, monitor, treat, alleviate or compensate for injuries, inspect, replace, regulate or support physiological structures or processes, support or maintain life, and provide information for medical or diagnostic purposes by examining samples from the human body.

[0003] The guide needle is a common medical device. When performing some complex puncture operations, the guide needle can help doctors accurately locate the target tissue or organ. The guide needle can also be used as a preliminary channel establishment tool. In vascular interventional surgery, such as coronary angiography or stent implantation, the guide needle first punctures the blood vessel so that the subsequent wire can enter the blood vessel through the guide needle. The existing guide needle mainly includes a needle tip, a needle body and a needle seat. After the wire is introduced, an additional cutting tool is required to cut the wire. Generally, two to three people are required to cooperate in the operation. In addition to the attending physician, at least It is very inconvenient for an assistant to cut the wires. In emergency or complex medical operation scenarios, time is a critical factor. If the main operating doctor completes the operation of cutting the wires alone, the time spent on communication and handover can be reduced. For example, in cardiac interventional surgery, every second is related to the patient's life safety. When the main operating doctor determines that the guide wire needs to be cut to adjust the position of the instrument or end a certain operation step, it can be executed immediately without waiting for the assistant's cooperation, thereby speeding up the pace of the operation and reducing the risk of exposure of the patient's heart and other important organs during the operation. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the present invention mainly provides a breakable guide needle, which is used to solve the technical problem raised in the above background technology that at present, in the process of using the guide needle to pull the wire, at least two people are required to cooperate, which aggravates tissue damage, increases time consumption in emergency or complex medical operation scenarios, and affects the rhythm of the operation.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A wire-breakable guide needle comprises a guide structure, wherein the guide structure comprises a needle body and a cap body located at the rear end of the needle body, and the interior of the needle body is hollow and open at both ends. A connector is provided in the needle body, and the connector and the needle body are detachably connected. A wire cutting assembly is also provided in the needle body, and the wire cutting assembly comprises a cutting piece, and an annular channel between the cutting piece and the needle body is a guide channel, and wire material is provided in the guide channel, and a receiving portion is provided on the inner wall near the tip of the needle body, and the cutting piece comprises a tube body, a threaded column and a cutting end, and the cutting end presses the wire material onto the receiving portion and cuts it off.

[0007] Preferably, a knob is provided at one end of the cutting member, and the knob and the cutting member are connected by a bolt.

[0008] Preferably, a first threaded portion is provided at the tail end of the needle body, and the first threaded portion and the cap body are threadedly connected.

[0009] Preferably, a second threaded portion is provided on the inner wall of the connector, and the second threaded portion is threadedly connected to the threaded column.

[0010] Preferably, a limiting portion is provided on one side of the outer wall of the needle body, a through hole is provided on a side close to the limiting portion, and one end of the wire passes through the through hole.

[0011] Preferably, an annular groove is provided at the folded edge position on one side of the cap body, an anti-slip pad is provided in the annular groove, and the anti-slip pad presses the wire onto the limiting portion to position it.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The present invention realizes that during the operation with the guide needle, the main operating doctor does not need to expand the tissue opening to expose the wire and can complete the operation of cutting the wire alone by himself, which can reduce tissue trauma and the time spent on communication and handover. It does not need to wait for the cooperation of assistants and can be executed immediately, thereby speeding up the rhythm of the operation. For example, during the process of placing the wire in the deep tissue, it is necessary to cut the wire and re-place the wire in the adjacent place to continue the damage. The traditional method can only expand the tissue opening to expose the wire, cut it, remove the guide needle and re-place it before continuing the operation. This will prolong the operation time, aggravate tissue damage, and increase the burden on patients. In addition, the guide needle or wire is exposed to the air or repeatedly touched by gloves and gauze, which increases the risk of infection. The present invention can effectively reduce the risk of patient exposure during the operation, reduce tissue damage, and reduce additional bacterial contamination. In the operation environment with extremely high requirements for aseptic operation, the sterile state of the operation area is maintained to the maximum extent, which helps to improve the success rate of the operation to a certain extent.

[0014] (2) The present invention realizes cutting at the needle tip during medical operations by providing a needle body, a receiving portion, a tube body, a threaded column, a cutting end, a knob and a guide wire channel, so as to accurately control the length of the introduced wire, ensure the accuracy of the cutting position, and cut at the most appropriate position to avoid errors. When cutting with traditional tools, due to limited operating space, especially when operating around deep tissues or small blood vessels in the body, it is easy to cause damage to the surrounding tissues due to factors such as shaking of the tool and misoperation. The present application can complete cutting while minimizing interference with the surrounding tissues, and can avoid serious complications such as nerve damage or blood vessel rupture caused by accidental contact with manual cutting tools.

[0015] (3) The present invention realizes the rapid assembly of the needle body, the connector, the cap body and the cutting wire assembly by providing the first threaded portion, the limiting portion, the second threaded portion, the annular groove and the anti-slip pad. When a part of the guide needle is damaged or fails, the rapid assembly design means that only the problematic part needs to be replaced without discarding the entire guide needle, thereby effectively reducing medical costs and waste of resources.

[0016] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall structure decomposition of the present invention;

[0019] Figure 3 It is a schematic cross-sectional view of the internal structure of the needle body of the present invention.

[0020] In the figure: 1. guiding structure; 11. needle body; 111. first threaded portion; 112. limiting portion; 113. receiving portion; 114. through hole; 13. connector; 131. second threaded portion; 14. cap body; 141. annular groove; 15. anti-slip pad; 2. wire; 3. cutting wire assembly; 31. cutting piece; 311. tube body; 312. threaded column; 313. cutting end; 32. knob; 4. lead wire channel. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] Example 1, please refer to the attached Figure 1-3 As shown, a wire-breakable guide needle comprises a guide structure 1, wherein the guide structure 1 comprises a needle body 11 and a cap body 14 located at the rear end of the needle body 11, and the interior of the needle body 11 is hollow and has openings at both ends, a connector 13 is arranged in the needle body 11, and the connector 13 and the needle body 11 are detachably connected, a cutting assembly 3 is also arranged in the needle body 11, and the cutting assembly 3 comprises a cutting piece 31, and the annular channel between the cutting piece 31 and the needle body 11 is a guide channel 4, and a wire 2 is arranged in the guide channel 4, and a receiving portion 113 is arranged on the inner wall near the tip of the needle body 11, and the cutting piece 31 comprises a tube body 311, a threaded column 312 and a cutting end 313, and the cutting end 313 presses the wire 2 onto the receiving portion 113 and cuts it off.

[0025] Through the above structure, during the operation with a guide needle, the main operating doctor can complete the operation of cutting the guide wire alone, which can reduce the time spent on communication and handover. There is no need to wait for the cooperation of assistants, thereby speeding up the pace of the operation and reducing the additional bacterial contamination that may be caused by the participation of assistants. In an operating environment with extremely high requirements for sterile operation, the sterile state of the operating area is maintained to the maximum extent. In addition, the structure is simple and easy to operate, and the appropriate cutting point can be selected according to needs.

[0026] The specific operation is as follows: first, pass the wire 2 through the through hole 114 so that the front end of the wire 2 enters the guide channel 4 until the front end of the wire 2 protrudes from the front end of the needle body 11, and then it can be used normally. When the wire 2 needs to be cut, twist the knob 32, thereby driving the cutting piece 31 to approach the receiving part 113 of the needle body 11, and press part of the wire 2 on the receiving part 113. With the rotation and cutting of the cutting end 313, the wire 2 can be cut off. If the tail end of the wire 2 needs to be fixed, the cap body 14 can be rotated so that the anti-slip pad 15 on the cap body 14 presses the wire 2 on the limiting part 112.

[0027] Example 2, please refer to the attached Figure 2 and 3 As shown, a knob 32 is provided at one end of the cutting member 31, and the knob 32 and the cutting member 31 are connected by a bolt. The knob 32 is used to provide a fulcrum, so that medical personnel can conveniently twist the cutting member 31 to cut the wire 2. A first threaded portion 111 is provided at the tail end of the needle body 11, and a threaded connection is formed between the first threaded portion 111 and the cap body 14, which is convenient for installation and disassembly, and the cap body 14 can protect the tail end of the needle body 11. A second threaded portion 131 is provided on the inner wall of the connector 13, and a threaded connection is formed between the second threaded portion 131 and the threaded column 312 , so that the cutting piece 31 can rotate and cut, a limiting portion 112 is provided on one side of the outer wall of the needle body 11, and a through hole 114 is provided on the side close to the limiting portion 112, and one end of the wire 2 passes through the through hole 114. Through the design of the through hole 114, the wire 2 is introduced into the guide channel 4. An annular groove 141 is provided at the folded edge position on one side of the cap body 14, and an anti-slip pad 15 is provided in the annular groove 141, and the anti-slip pad 15 presses the wire 2 on the limiting portion 112 for positioning, and through the anti-slip pad 15, one end of the wire 2 is pressed tightly with the cooperation of the limiting portion 112.

[0028] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A guide needle with a breakable thread, comprising a guide structure (1), wherein the guide structure (1) comprises a needle body (11) and a cap body (14) located at the rear end of the needle body (11), and the needle body (11) is hollow inside and has two openings at both ends, characterized in that The needle body (11) is provided with a connector (13), and the connector (13) and the needle body (11) are detachably connected. The needle body (11) is also provided with a cutting assembly (3), and the cutting assembly (3) includes a cutting piece (31). The annular channel between the cutting piece (31) and the needle body (11) is a guide channel (4), and a wire (2) is provided in the guide channel (4). A receiving portion (113) is provided on the inner wall near the tip of the needle body (11). The cutting piece (31) includes a tube body (311), a threaded column (312) and a cutting end (313), and the cutting end (313) presses the wire (2) onto the receiving portion (113) and cuts it.

2. A breakable wire guide needle according to claim 1, characterized in that: A knob (32) is provided at one end of the cutting piece (31), and the knob (32) and the cutting piece (31) are connected via a bolt.

3. A breakable wire guide needle according to claim 1, characterized in that: The tail end of the needle body (11) is provided with a first threaded portion (111), and the first threaded portion (111) and the cap body (14) are threadedly connected.

4. A breakable wire guide needle according to claim 1, characterized in that: A second threaded portion (131) is provided on the inner wall of the connecting head (13), and the second threaded portion (131) is threadedly connected to the threaded column (312).

5. A breakable wire guide needle according to claim 3, characterized in that: A limiting portion (112) is provided on one side of the outer wall of the needle body (11), a through hole (114) is provided on a side close to the limiting portion (112), and one end of the wire (2) passes through the through hole (114).

6. A breakable wire guide needle according to claim 3, characterized in that: An annular groove (141) is provided at the folded edge position on one side of the cap body (14), an anti-skid pad (15) is provided in the annular groove (141), and the anti-skid pad (15) presses the wire (2) onto the limiting portion (112) for positioning.

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