Syringe structure and endoscopic intervention device
The needle tube structure with a polymer material tube and groove hole fixation method addresses the issues of guide wire damage and polymer material detachment in endoscopic intervention devices, ensuring secure attachment and preventing medical accidents.
Patent Information
- Application Number
- JP2025001127U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2024-04-12
- Filing Date
- 2025-04-11
- Publication Date
- 2025-06-11
- Estimated Expiration
- 2035-04-11
AI Technical Summary
Existing needle tube structures in endoscopic intervention devices easily rub and damage guide wires, and the polymer material cushion inside the needle tip blade is prone to falling off, leading to medical accidents.
A needle tube structure with a polymer material tube structure installed inside, featuring at least one groove hole on the side wall for fixation, which can be secured using various methods such as adhesive injection, co-injection molding, spray coating, or hot melt methods, ensuring a stable and secure attachment.
The solution effectively prevents guide wire damage by maintaining the polymer material tube structure securely in place, reducing the risk of medical accidents caused by the tube structure falling off during procedures.
Smart Images
Figure 0003251606000001_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of medical devices for endoscopes, and particularly relates to a needle tube structure and an endoscopic intervention device.
Background Art
[0002] An endoscopic intervention device constructs a passage for inserting a guide wire, and the guide wire reciprocally slides along the needle tube of the endoscopic intervention device to insert the distal end of the guide wire into the target position. Since a needle tip blade for cutting or puncturing is provided at the tip of the needle tube, when the needle tube slides along the guide wire, the guide wire is cut or rubbed by the needle tip blade, so that the skin of the guide wire is easily rubbed and peeled off, which in turn causes serious damage to the guide wire. In addition, a cushion layer for separating the guide wire and the needle tube is arranged inside the needle tip blade, and thereby, the rubbing of the skin of the guide wire by the needle tip blade of the needle tube can be prevented. However, in the medical process, the risk of the cushion layer inside the needle tip blade falling off is relatively high, and it is easy to cause a medical accident in which the cushion layer material remains in the human body.
Summary of the Invention
Problems to be Solved by the Invention
[0003] An object of the present invention is to provide a needle tube structure and an endoscopic intervention device that can solve the technical problems that the needle tube structure easily rubs and damages the skin of the guide wire and the tube structure made of a polymer material easily falls off.
Means for Solving the Problems
[0004] In a first aspect, the needle tube structure according to the present invention includes a needle tube body and a tube structure made of a polymer material installed inside the needle tube body, at least one groove hole is provided on the side wall of the needle tube body, and the tube structure made of a polymer material is fixed by using the groove hole.
[0005] In the first aspect, the first type of possible embodiment of the first aspect according to the present invention is that the pipe structure made of the polymer material is inserted into the syringe body, and the pipe structure made of the polymer material is fixed by an adhesive injected from the groove hole with respect to the syringe body.
[0006] In the first aspect, the second type of possible embodiment of the first aspect according to the present invention is that the syringe body and the pipe structure made of the polymer material are processed by a co-injection molding process, so that the syringe body and the pipe structure made of the polymer material are joined.
[0007] In the first aspect, the third type of possible embodiment of the first aspect according to the present invention is that the pipe structure made of the polymer material is formed on the inner wall of the syringe body by spray coating, so that the pipe structure made of the polymer material is closely adhered and joined to the inner wall of the syringe body.
[0008] In the first aspect, the fourth type of possible embodiment of the first aspect according to the present invention is that the syringe body and the pipe structure made of the polymer material are integrally formed by a hot melt method.
[0009] In the first aspect, the fifth type of possible embodiment of the first aspect according to the present invention is that a protrusion is formed on the pipe structure made of the polymer material and is fitted into the groove hole.
[0010] In the first aspect, the sixth type of possible embodiment of the first aspect according to the present invention is that a needle tip blade is provided at the end of the syringe body, and the pipe structure made of the polymer material has a notch covering the inside of the needle tip blade.
[0011] In the sixth type of possible embodiment of the first aspect, the seventh type of possible embodiment of the first aspect according to the present invention is that the needle tip blade and the notch are aligned along the blade surface, and the blade surface is provided inclined with respect to the axis of the syringe body. The inner edge of the notch close to the axis of the syringe body is exposed from the blade surface.
[0012] In the second aspect, the endoscopic intervention device according to the present invention comprises a guide wire and the syringe needle structure according to the first aspect, wherein the guide wire penetrates through the syringe needle structure and is slidable along the syringe needle structure.
[0013] In the second aspect, the syringe needle body is slidably inserted into the outer tube.
Advantages of the Invention
[0014] The embodiments of the present invention have the following beneficial effects. A tube structure made of a polymer material is installed inside the syringe needle body, and at least one groove hole is provided on the side wall of the syringe needle body. The tube structure made of a polymer material is fixed by using the groove hole, whereby it can be ensured that the tube structure made of a polymer material is firmly joined to the syringe needle body, and it is possible to prevent the guide wire passing through the syringe needle body from being rubbed and damaged by the syringe needle body, improve the stability of the tube structure made of a polymer material, and reduce the risk of the tube structure made of a polymer material falling off.
[0015] In order to make the above objects, features and advantages of the present invention more clear, the following preferred embodiments will be given and described in detail with reference to the drawings.
Brief Description of the Drawings
[0016] In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the related art, the drawings used in the following description of the specific embodiments or the related art will be briefly explained. The drawings to be explained show some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without using inventive capabilities.
[0017]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Embodiments for Carrying out the Invention
[0018] Hereinafter, with reference to the drawings, the technical solution of the present invention will be described clearly and completely. The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without using inventive ability also belong to the protection scope of the present invention.
[0019] In the description of the present invention, the directions or positional relationships expressed by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the drawings, and are only for the purpose of simply and briefly explaining the present invention, and do not expressly or implicitly imply that the corresponding device or element necessarily has a specific direction, or is configured or operated in a specific direction, so it does not limit the present invention. Also, the terms "first", "second", "third" are only for explaining the difference in names, and do not expressly or implicitly imply relative importance. The physical quantities in the formula are, unless otherwise specified, the basic quantities of the basic units of the International System of Units, or the derived quantities derived by mathematical operations such as multiplication, division, differentiation or integration based on the basic quantities.
[0020] In the description of the present invention, unless otherwise specified, the terms "mounting", "connecting", "connecting" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. And it may be a mechanical connection or an electrical connection. Also, it may be directly connected, indirectly connected through an intermediate, or the interiors of two elements may communicate. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
[0021] As shown in FIGS. 1, 3, and 5, the syringe structure according to the embodiment of the present invention includes a syringe body 100 and a tube structure 200 made of a polymer material installed inside the syringe body 100. At least one groove hole 101 is provided on the side wall of the syringe body 100, and the tube structure 200 made of a polymer material is fixed by using the groove hole 101.
[0022] In this embodiment, the tube structure 200 made of a polymer material is made of materials such as fibers, resins, plastics, and rubbers that are harmless to the human body. When using the syringe structure, the guide wire penetrates the syringe body 100 along the axial direction, and the tube structure 200 made of a polymer material is installed between the guide wire and the syringe body 100, whereby the syringe body 100 can be prevented from rubbing against the skin of the guide wire. In addition, at least one groove hole 101 is provided on the side wall of the syringe body 100, and the tube structure 200 made of a polymer material can be fixed by using the groove hole 101. By providing the groove hole 101, a reinforcing material can be added to enhance the bonding strength between the tube structure 200 made of a polymer material and the syringe body 100, improve the stability of the tube structure 200 made of a polymer material, and reduce the risk of medical accidents caused by the detachment of the tube structure 200 made of a polymer material.
[0023] As shown in FIGS. 1 and 2, in the first alternative embodiment, the tube structure 200 made of a polymer material is inserted into the syringe body 100, and the tube structure 200 made of a polymer material is fixed by an adhesive injected from the groove hole 101 with respect to the syringe body 100. The adhesive can flow into the gap between the outer wall of the tube structure 200 made of a polymer material and the inner wall of the syringe body 100 from the groove hole 101, whereby the tube structure 200 made of a polymer material and the syringe body 100 can be firmly bonded.
[0024] As shown in FIGS. 3 and 4, in the second alternative embodiment, the syringe body 100 and the tube structure 200 made of a polymer material are processed by a co-injection molding process, whereby the syringe body 100 and the tube structure 200 made of a polymer material are joined, and the syringe body 100 and the tube structure 200 made of a polymer material are molded simultaneously to achieve a strong bond between the two, and the processing efficiency is relatively high.
[0025] In a third alternative embodiment, a tube structure 200 made of a polymer material is formed by spray coating and solidifying on the inner wall of the syringe body 100, and the tube structure 200 made of a polymer material is closely adhered and joined to the inner wall of the syringe body 100. In this way, the processing and forming can be realized relatively quickly.
[0026] In a fourth alternative embodiment, the syringe body 100 and the tube structure 200 made of a polymer material are integrally formed by a hot melt method, with higher production efficiency. After solidification, the joint between the syringe body 100 and the tube structure 200 made of a polymer material is stronger.
[0027] As shown in FIGS. 2 and 5, in the above alternative embodiments, a protrusion 201 that fits into the groove 101 is formed on the tube structure 200 made of a polymer material. By fitting the protrusion 201 into the groove 101, the stability of the tube structure 200 made of a polymer material with respect to the syringe body 100 can be improved, and the risk of the tube structure 200 made of a polymer material falling off can be reduced.
[0028] As shown in FIGS. 2 and 4, a needle tip blade 102 is provided at the end of the syringe body 100. The needle tip blade 102 can cut or pierce the human tissue at the target site. The tube structure 200 made of a polymer material has a notch 202 that covers the inside of the needle tip blade 102. The notch 202 can separate the guide wire passing through the syringe body 100 from the needle tip blade 102, and can prevent the skin of the guide wire from being rubbed and damaged.
[0029] Furthermore, the needle tip blade 102 and the notch 202 are aligned along the blade surface, the blade surface is provided inclined with respect to the axis of the needle tube body 100, and the inner edge 203 of the notch 202, which is close to the axis of the needle tube body 100, is exposed from the blade surface. The blade surface includes a plane or an arc-shaped surface inclined with respect to the axis of the needle tube body 100, and the inner edge 203 is exposed from the blade surface, that is, the inner edge 203 can contact the guide wire, thereby preventing the guide wire from contacting the inner edge of the needle tip blade 102 and preventing the guide wire bent with respect to the axis of the needle tube body 100 from being rubbed and damaged by the needle tip blade 102.
[0030] As shown in FIG. 1, the endoscope intervention device according to the embodiment of the present invention includes a guide wire and the needle tube structure according to the above embodiment, the guide wire penetrates the needle tube structure and is slidable along the needle tube structure. The needle tube body 100 is inserted into the distal end spaced from the operation end, thereby performing puncture on the human tissue at the target site, and inserting the guide wire along the needle tube body 100. In this process, the tube structure 200 made of polymer material is interposed between the guide wire and the needle tube body 100 so as to separate them, thereby preventing mutual wear between the guide wire and the needle tube body 100 and preventing the needle tube body 100 from rubbing and damaging the epidermis of the guide wire. In addition, the tube structure 200 made of polymer material is firmly joined to the needle tube body 100, and the risk of medical accidents caused by the detachment of the tube structure 200 made of polymer material can be reduced.
[0031] In the embodiment of the present invention, the needle tube body 100 is slidably inserted into the outer tube 300, the outer tube 300 is inserted into the endoscope, the visible operation of the needle tube body 100 is realized by the endoscope, the needle tube body 100 can move telescopically with respect to the outer tube 300, the outer tube 300 first inserts the needle tube body 100 into a specific position, and then the needle tube body 100 is extended outward with respect to the outer tube 300 to perform puncture on the human tissue at the target site, and the guide wire is inserted along the needle tube body 100. In this process, the tube structure 200 made of polymer material can prevent the needle tube body 100 from rubbing against the guide wire.
[0032] Each of the above embodiments is only for explaining the technical solution of the present invention and does not limit it. Although the present invention has been described in detail with reference to each of the above embodiments, those skilled in the art may modify the technical solutions described in each of the above embodiments, or may perform equivalent substitutions for some or all of the technical features therein. These modifications or substitutions do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of each embodiment of the present invention.
Explanation of Reference Numerals
[0033] 100 Syringe Body 101 Groove Hole 102 Needle Tip Edge 200 Tube Structure Made of Polymer Material 201 Protrusion 202 Notch 203 Inner Edge 300 Outer Tube
Claims
1. The needle body (100) and a polymeric material tube structure (200) installed inside the needle body (100) are provided. At least one slot (101) is provided in the side wall of the needle tube body (100), and the polymeric material tube structure (200) is fixed using the slot (101). A needle tube structure characterized by:
2. The polymeric material tubular structure (200) is inserted into the needle tube body (100), and the polymeric material tubular structure (200) is fixed to the needle tube body (100) by an adhesive injected from the slot (101). The needle tube structure according to claim 1 .
3. The needle body (100) and the polymeric tubular structure (200) are processed by a co-injection molding process, so that the needle body (100) and the polymeric tubular structure (200) are joined together. The needle tube structure according to claim 1 .
4. The polymeric tubular structure (200) is formed on the inner wall of the needle body (100) by spray coating, so that the polymeric tubular structure (200) is closely attached to the inner wall of the needle body (100). The needle tube structure according to claim 1 .
5. The needle tube body (100) and the polymeric material tube structure (200) are integrally molded by hot melt molding. The needle tube structure according to claim 1 .
6. The polymeric tubular structure (200) is formed with a protrusion (201) that fits into the slot (101). The needle tube structure according to any one of claims 1 to 5.
7. A needle tip blade (102) is provided at the end of the needle tube body (100), and the polymeric material tube structure (200) has a notch (202) that covers the inside of the needle tip blade (102). The needle tube structure according to claim 1 .
8. The needle tip blade (102) and the notch portion (202) are aligned along a blade surface, and the blade surface is inclined with respect to the axis of the needle tube main body (100); The inner edge (203) of the cutout portion (202) close to the axis of the needle tube body (100) is exposed from the blade surface. The needle tube structure according to claim 7 .
9. A needle structure according to any one of claims 1 to 5, wherein the guide wire penetrates the needle structure and is slidable along the needle structure. An endoscopic intervention device characterized in that
10. The needle tube body (100) is slidably inserted into the outer tube (300).
10. An endoscopic intervention device according to claim 9.