Screw-in and screw-out type continuous suture needle

Abstract

The invention discloses a screw-in and screw-out type continuous suture needle, and relates to the technical field of medical instruments, in particular to a suture instrument used for suturing peritoneum, omentum majus, abdominal wall defects and the like under a laparoscope. The problems that in the prior art, sewing efficiency is low, and operation is very difficult are solved. According to the technical scheme, the needle comprises a needle point and an operating handle and further comprises a needle rod, the needle rod is a spiral cylinder formed by coiling a single metal wire for multiple circles, the needle point is fixed to the front end of the needle rod and located in the direction of a rotary extension line of the needle rod, and a threading hole is formed in the needle point. And the operating handle is fixed at the tail end of the needle rod and is positioned on the axial lead of the spiral cylinder of the needle rod. When the continuous suture needle is used, a doctor can continuously insert a needle and perforate without stop, continuous suture is achieved, the surface of the needle rod made of the metal wires is very smooth, the needle rod smoothly slides relative to human tissue, and friction between a pure suture line and the human tissue is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a suturing device used for suturing peritoneum, greater omentum, abdominal wall defects and the like under laparoscopy. Background Art

[0002] At present, when suturing the peritoneum, omentum, abdominal wall defects, etc. under laparoscopy, a needle holder is generally used to clamp the suture needle for suturing. This operation has limited instrument operation angles and requires multiple suturing, clamping, finding, scissoring, and knotting. The suturing efficiency is relatively low, which prolongs the doctor's operation time and anesthesia exposure time, increases clinical risks and costs, and also consumes the doctor's physical strength.

[0003] The Chinese patent with the authorization announcement number CN 201861686 U and the name of "Laparoscopic continuous suture device" discloses a laparoscopic continuous suture device, which includes a central rod, one end of which is connected to a suture needle, and the other end of which is connected to a rotating handle. The suture needle is spiral-shaped, and a threading hole is provided at the needle tip. Although the suture device proposes the idea of ​​continuous suture, since there is only a spiral shape behind the suture needle, it is very difficult to operate when performing continuous suture, and the help to doctors is limited, and it cannot achieve continuous suture in the true sense. Summary of the invention

[0004] The purpose of the present invention is to provide a continuous suture needle that can be rotated in and out to solve the problems of low suture efficiency and difficulty in operation in the prior art. The technical solution of the present invention is as follows:

[0005] It includes a needle tip 1 and an operating handle 3, and it also includes a needle rod 2, wherein the needle rod 2 is a spiral column formed by winding a single metal wire multiple times, the needle tip 1 is fixed to the front end of the needle rod 2 and is located in the direction of the rotation extension line of the needle rod 2, a threading hole 4 is opened on the needle tip 1, and the operating handle 3 is fixed to the end of the needle rod 2 and is located on the axis line of the spiral column of the needle rod 2.

[0006] The needle bar 2 is a spiral column, and its front end is a needle tip 1, which is a sharp part that penetrates the human skin tissue, and is provided with a threading hole 4, through which a suture 5 is passed. The needle bar 2 is set as a screw body formed by multiple turns of winding. When in use, the needle tip 1 penetrates the human tissue 6, and spirally advances in the human tissue 6, repeatedly and continuously penetrates the edges of the two tissues to be sutured forward, and forms a spatial spiral trajectory that continuously rotates and advances with the suture 5, so as to bring the suture 5 into the eye of the needle arranged at the edge of the two tissues. When the threading in the two tissues is completed and the needle needs to be withdrawn, the doctor separates the suture 5 from the threading hole 4, and the needle bar 2 drives the needle tip 1 to rotate in a spiral reverse direction, gradually withdrawing from the needle hole, while the suture 5 remains in the eye of the needle. The thread ends of the suture 5 are gathered and fixed to complete the suturing operation. During the entire operation of inserting and withdrawing the needle, the doctor manipulates the operating handle 3 to implement the surgical process.

[0007] When the present invention is used, the doctor can continuously insert the needle and pierce the hole without stopping, thus realizing continuous suturing. It is not necessary to ligate each needle hole, thus saving physical strength, reducing the patient's operation time, and reducing the doctor's operation time. Moreover, during the continuous needle insertion process, the surface of the needle rod 2 made of metal wire is very smooth, and it slides smoothly between the human tissue, thus avoiding the friction between the simple suture line and the human tissue. Since the surface roughness of the individual suture line is higher than that of the metal wire, it is easy to tear the human tissue at the needle hole during the spiral thread insertion process, thereby expanding the needle hole diameter and causing greater damage to the human tissue. The present invention avoids the occurrence of the above situation. The needle rod 2 of the metal wire has multiple turns, which is equivalent to providing guidance at multiple positions. The pitch is standard, and the position of the sutured needle hole is also standardized. The present invention solves the problems of low suturing efficiency and great difficulty in operation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the prior art. Figure 2 It is a schematic structural diagram of the present invention in the first embodiment. Figure 3 It is a structural schematic diagram of the present invention in use state, Figure 4 This is a diagram of the skin's appearance after surgery. Figure 5 It is a schematic diagram of the enlarged structure of the needle tip in the present invention. DETAILED DESCRIPTION

[0009] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0010] Specific implementation method 1: Combination Figure 2 , 34 illustrate this embodiment, which includes a needle tip 1 and an operating handle 3, and also includes a needle bar 2, wherein the needle bar 2 is a spiral column formed by winding a single metal wire multiple times, the needle tip 1 is fixed to the front end of the needle bar 2 and is located in the direction of the rotation extension line of the needle bar 2, and a threading hole 4 is opened on the needle tip 1, and the operating handle 3 is fixed to the end of the needle bar 2 and is located on the axis of the spiral column of the needle bar 2. Figure 3 As shown in FIG. 1 , the figure shows a side view of the present invention, which perforates the underlying human tissue. Figure 4 As shown, human tissue 7 and human tissue 8 can be sutured together.

[0011] Preferably, the metal wire is a steel wire, and the strength of the steel can meet the requirements of the spiral needle rod 2.

[0012] Preferably, the diameter of the needle rod 2 is between 1.2 mm and 2.0 mm, preferably 1.8 mm.

[0013] The value of the surface roughness Ra of the needle bar 2 is less than 0.80. Such a configuration can meet the product quality standard for medical suture needles in the "Pharmaceutical Industry Standard of the People's Republic of China" YY / T0043-2016.

[0014] Preferably, the surface roughness Ra of the needle bar 2 is between 0.2 micrometers and 0.05 micrometers. It is preferably achieved by polishing. The following table is the recommended selection of surface roughness Ra in relevant literature. Within the Ra selection parameter range of this embodiment, the effect of the present invention can be achieved.

[0015]

[0016] Specific implementation method 2: Combination Figure 2 The present embodiment is described in detail. The length of the needle bar 2 is between 70 mm and 120 mm; the outer diameter of the needle bar 2 is between 10 mm and 20 mm, and can be 10, 11, 12, 13, 14 or 15 mm.

[0017] The present invention has been disclosed as above in the form of a preferred embodiment, but it is not intended to limit the present invention. Any simple modification, equivalent changes and modifications made to the above implementation cases by any professional and technical personnel who do not deviate from the content of the technical solution of the present invention and based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A continuous suture needle with a screw-in and screw-out function, comprising a needle tip (1) and an operating handle (3); characterized in that: It also includes a needle bar (2), which is a spiral column formed by winding a single metal wire multiple times. The needle tip (1) is fixed to the front end of the needle bar (2) and is located in the direction of the rotation extension line of the needle bar (2). The needle tip (1) is provided with a threading hole (4). The operating handle (3) is fixed to the end of the needle bar (2) and is located on the axis of the spiral column of the needle bar (2).

2. The continuous suture needle according to claim 1, characterized in that: The metal wire is a steel wire.

3. The continuous suture needle according to claim 1, characterized in that: The diameter of the needle rod (2) is between 1.2 mm and 2.0 mm.

4. The continuous suture needle according to claim 3, characterized in that: The diameter of the needle bar (2) is 1.8 mm.

5. The continuous suture needle according to claim 1, characterized in that: The value of the surface roughness Ra of the needle bar (2) is less than 0.

80.

6. The continuous suture needle according to claim 5, characterized in that: The surface roughness Ra of the needle rod (2) is between 0.2 micrometers and 0.05 micrometers.

7. The continuous suture needle according to claim 6, characterized in that: The surface roughness is achieved by polishing.

8. The continuous suture needle according to claim 1, characterized in that: The length of the needle rod (2) is between 70 mm and 120 mm; the outer diameter of the needle rod (2) is between 10 mm and 20 mm.

9. The continuous suture needle according to claim 8, characterized in that: The outer diameter of the needle bar (2) is 10, 11, 12, 13, 14 or 15 mm.

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