Suture thread and suture device
By designing a suture line with a connection body with a suture needle with a width lower than that of the suture body, the problem of leakage caused by the existing suture line being unable to effectively block the needle hole is solved, and a lower permeability and faster surgical recovery are achieved.
Patent Information
- Application Number
- CN202411936530.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-04-04
AI Technical Summary
The existing sutures with needles cannot block the needle hole because the diameter of the suture is smaller than the needle diameter of the suture needle, resulting in blood or tissue fluid leakage, affecting the normal recovery of the suture part.
A suture is designed, which includes a connecting body and a suture body, a connecting body for connection with a suture needle, and a suture body for surgical suture. The width of the connecting body is lower than the suture body, and the outer diameter of the suture body is close to the outer diameter of the suture needle, so that the suture can effectively block the needle hole.
By using this designed suture, the penetration rate of needle holes can be effectively reduced, the surgical time and complications of patients can be reduced, and surgical recovery can be promoted.
Smart Images
Figure CN119745451A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of sutures, and in particular to a suture and a suture device. Background Art
[0002] Sutures are special medical threads used for ligation, hemostasis and tissue suture in surgical operations. Sutures can be used to keep the wound accurate and maintain the tension of the incision until it heals naturally.
[0003] In actual use, sutures are driven by a suture needle with a certain puncture force to suture the tissues and organs that have been cut or broken by trauma to align or reconstruct the channels, restore their functions, align the wound edges, bring them closer, eliminate the dead space, and facilitate early healing of the wound; or the suture system is tightened to close the lumen, which is used to stop bleeding or close the structure to prevent leakage.
[0004] The existing connection method of the suture thread and the suture needle is as follows: first, a needle hole is made at the tail of the suture needle, then the suture thread is passed into the needle hole of the suture needle, and finally the needle and thread are connected together by physically pressing the needle to form a suture thread with a needle.
[0005] For sutures with needles, the outer diameter of the suture needle is larger than the diameter of the suture thread due to the wall thickness of the outer diameter and inner diameter of the suture needle. This will result in that after the suture needle passes through the tissue or organ during the operation, the diameter of the suture thread is smaller than the needle diameter of the suture needle and cannot block the eye of the needle, causing blood or related tissue fluid to leak from the eye of the needle, causing inflammation or other related complications at the sutured site of the patient. Summary of the invention
[0006] In view of the shortcomings of the background technology, the present invention provides a suture thread and a suturing device. The technical problem to be solved is that after the existing needle suture thread is used in surgery, the suture thread cannot block the needle eye because the thread diameter is smaller than the needle diameter of the suture needle, and cannot prevent leakage, which will affect the normal recovery of the sutured part.
[0007] In order to solve the above technical problems, in the first aspect, the present invention provides the following technical solutions: a suture, the suture is a single strand, comprising a connecting body and a suture body, the connecting body is used to connect with a suture needle, and the suture body is used for surgical suture;
[0008] At least one end of the suturing body is connected to the connecting body, and the width of the connecting body is smaller than the width of the suturing body; for the connecting end between the connecting body and the suturing body, the end surface of the connecting body is in full contact with the end surface of the suturing body.
[0009] In a certain embodiment of the first aspect, when the suture is in a straightened state, the center line of the connecting body and the center line of the suture body are located on the same straight line, or on different straight lines.
[0010] In a certain embodiment of the first aspect, the length of the connecting body is between 0.5 mm and 3 mm, the widest line distance of the connecting body is between 0.045 mm and 0.7 mm; and the length of the suture line is between 10 cm and 5.5 m.
[0011] In a certain embodiment of the first aspect, the connecting body is overall in a right-angled trapezoidal or rectangular shape when viewed along the Z-axis direction of the suture body, and the connecting body is overall in a circular shape when viewed along the Y-axis direction of the suture body.
[0012] In certain embodiments of the first aspect, the suture body is cylindrical.
[0013] In a certain embodiment of the first aspect, the angle between the end surface of the connecting body facing away from the suture body and a plane parallel to the Y-axis direction of the suture body is greater than or equal to 0° and less than or equal to 45°.
[0014] In a certain embodiment of the first aspect, the connecting body is connected to the suture body via a transition body, and an angle between the connecting body and the transition body is greater than 90° and less than 180°.
[0015] In a certain embodiment of the first aspect, along the X-axis view of the suture body, the distance between the top of the suture body and the top of the connecting body and the distance between the bottom of the connecting body and the bottom of the connecting body are both greater than 0 mm and less than or equal to 0.4 mm.
[0016] In certain embodiments of the first aspect, a distance between a top end of the suture body and a top end of the connection body is the same as a distance between a bottom end of the connection body and a bottom end of the connection body.
[0017] In a second aspect, the present invention provides a suturing device, comprising the above-mentioned suture thread and a suture needle, wherein a needle hole is opened inward at one end of the suture needle, and the connecting body of the suture thread is fixed in the needle hole, and the ratio of the outer diameter of the suture needle to the width of the suture body is between 0.85 and 1.2.
[0018] Compared with the prior art, the present invention has the following beneficial effects: the suture of the present invention is provided with a connecting body connected to the suture needle, and the width of the connecting body is made lower than the suture body, so that the suture of the present invention can be inserted into a suture needle whose outer diameter is close to that of the suture body. When the suture device of the present invention is used for surgical suture and after the operation, since the suture body occupies a larger area of the needle eye, the permeability or permeation amount of the needle eye will be lower. In actual application, this can save doctors less operating time, reduce the cost of other occluding products for patients, and facilitate surgical recovery. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic diagram of the structure of the suture thread in Example 1;
[0020] Figure 2 for Figure 1 View in the Z-axis direction;
[0021] Figure 3 for Figure 1 The view in the Y-axis direction;
[0022] Figure 4 for Figure 1 View in the X-axis direction;
[0023] Figure 5 It is a schematic diagram of the suture thread and suture needle of the suturing device in the second embodiment in a separated state. DETAILED DESCRIPTION
[0024] The following is an explanation of the embodiments of a suture and a suture device disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.
[0025] It should be understood that, although the terms first, second, third, etc. may be used herein to describe various components or features, these components or features should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one feature from another feature. In addition, the terms or used herein may include any one or more combinations of the associated listed items depending on the actual situation.
[0026] Embodiment 1
[0027] like Figure 1 As shown, this embodiment provides a suture, wherein the suture is a single strand, comprising a connecting body 2 and a suture body 1, wherein the connecting body 2 is used to connect to a suture needle, and the suture body 1 is used for surgical suture;
[0028] At least one end of the suture body 1 is connected to the connection body 2, and the width of the connection body 2 is smaller than the width of the suture body 1; for the connection end of the connection body 2 and the suture body 1, the end surface of the connection body 2 is in full contact with the end surface of the suture body 1.
[0029] In actual use, the suture of the present invention is provided with a connecting body 2 connected to the suture needle, and the width of the connecting body 2 is lower than that of the suture body 1, so that the suture of the present invention can be inserted into a suture needle whose outer diameter is close to that of the suture body 1. When the suture of the present invention is used for surgery, the blank area of the needle eye can be reduced, thereby reducing leakage.
[0030] In addition, in this embodiment, Figure 1 The left end of the suture body 1 is connected to the connection body 2. In some embodiments, the right end of the suture body 1 can be connected to the connection body 2. In some embodiments, both the left and right ends of the suture body 1 can be connected to the connection body 2.
[0031] Specifically, in this embodiment, for the connecting body 2 and the suture body 1, when the suture line is in a straightened state, the center line of the connecting body 2 and the center line of the suture body 1 are located on the same straight line or on different straight lines. When the center line of the connecting body 2 and the center line of the suture body 1 are located on the same straight line, the suture line is composed of a concentric connecting body 2 and suture body 1.
[0032] In this embodiment, the connecting body 2 is connected along Figure 1 The view structures of the suture body 1 in the X-axis, Y-axis and Z-axis directions are as follows:
[0033] like Figure 2 As shown, the connecting body 2 is in a right-angle trapezoidal shape as a whole when viewed along the Z-axis direction of the suturing body 1. Figure 4 As shown, the connection body 2 is in a circular shape as a whole when viewed along the Y-axis direction of the suture body 1. In a certain overall embodiment, the connection body 2 is in a rectangular shape as a whole when viewed along the Z-axis direction of the suture body 1.
[0034] In addition, in this embodiment, the suture body 1 is cylindrical.
[0035] In addition, in this embodiment, Figure 2As shown, the angle 7 between the end surface of the connecting body 2 facing away from the suture body 1 and the plane parallel to the Y-axis of the suture body 1 is greater than or equal to 0° and less than or equal to 45°. For example, the angle 7 can be 15°, 25°, 30° or 40°. Figure 1 In the figure, the portion between the rightmost end face of the connecting body 2 facing away from the suture body 1 and the end face of the other end of the connecting body 2 is also cylindrical, and the diameter of the cylindrical portion is recorded as the line spacing 5. At this time, the line spacing 5 is smaller than the diameter of the suture body 1.
[0036] In this embodiment, the dimensions of the connecting body 2 and the suture are as follows:
[0037] The length 4 of the connecting body 2 is between 0.5 mm and 3 mm, the line distance 5 of the connecting body 2 is between 0.045 mm and 0.7 mm; the length of the suture line is between 10 cm and 5.5 m.
[0038] Exemplarily, the length 4 of the connecting body 2 can be 0.6mm, 1mm or 2mm, the widest line distance 5 of the connecting body 2 can be 0.05mm, 0.2mm, 0.4mm or 0.6mm; the length of the suture can be 20cm, 40cm, 80cn, 1.5m, 3m or 4m.
[0039] In addition, in this embodiment, the connecting body 2 is connected to the suture body 1 through the transition body 13. Figure 2 As shown, the angle 6 between the connecting body 2 and the transition body 13 is greater than 90° and less than 180°, wherein the angle 6 may be 100°, 120°, 140° or 160°.
[0040] In this embodiment, the transition body 13 is in a truncated cone shape. In some implementations, the transition body 13 may also be in other shapes.
[0041] In addition, in this embodiment, along the X-axis direction view of the suture body, as shown in FIG. Figure 2 As shown, the distance 8 between the top surface of the suture body 1 and the top surface of the connection body 2 and the distance 9 between the bottom surface of the connection body 2 and the bottom surface of the suture body 1 are both greater than 0 mm and less than or equal to 0.4 mm.
[0042] Meanwhile, the outer diameter 3 of the suture body 1 in this embodiment is composed of the distance 8 , the distance 9 and the line distance 5 of the connection body 2 .
[0043] Exemplarily, the distance 8 between the top surface of the suture body 1 and the top surface of the connection body 2 and the distance 9 between the bottom surface of the connection body 2 and the bottom surface of the suture body 1 may be 0.1 mm, 0.2 mm, 0.25 mm or 0.35 mm.
[0044] In some embodiments, the distance between the top surface of the suture body 1 and the top surface of the connection body 2 is the same as the distance between the bottom surface of the connection body 2 and the bottom surface of the suture body 1 .
[0045] In some embodiments, the distance between the top surface of the suture body 1 and the top surface of the connection body 2 and the distance between the bottom surface of the connection body 2 and the bottom surface of the suture body 1 may also be different.
[0046] Embodiment 2
[0047] like Figure 5 As shown, the present embodiment provides another suturing device, comprising the above-mentioned suture thread, and also comprising a suture needle 14, wherein a needle hole 12 is opened inwardly at one end of the suture needle 14, and a connecting body 2 of the suture thread is fixed in the needle hole 12, and a line spacing 5 of the connecting body 2 of the suture thread matches an aperture 11 of the needle hole 12, and a ratio of an outer diameter 10 of the suture needle 14 to a width of the suture body 1 is between 0.85 and 1.2; illustratively, the ratio may be 0.9, 1.0 or 1.1.
[0048] The suture in this embodiment is compared with the Prolene 3-0 polypropylene thread of Ethicon Company for needle and thread connection strength comparison test, wherein the specification of the suture in this embodiment is selected as 3-0, the average wire diameter of the suture is 0.296mm, the wire diameter of the connecting body 1 is 0.197, the length of the connecting body 1 is 1.2mm, the aperture of the needle hole 12 of the suture needle to be connected is 0.22mm, and the outer diameter 10 of the suture needle is 0.33mm; the number of test samples is five, and the test value is averaged. The final test results are shown in Table 1:
[0049] Table 1
[0050] sample Wire diameter specification Average wire diameter Needle and thread ratio Strong needle and thread connection standard Example 3-0 0.296mm 1.03 9.4N ≥6.8N Prolene 3-0 3-0 0.247mm 1.71 9.8N ≥6.8N
[0051] According to the test results in Table 1, the needle and thread connection strength after cutting of the present invention can still meet the requirements of the standards for the needle and thread connection strength of different sutures, and meet the needs of clinical use.
[0052] The suturing device in this embodiment and the existing suturing device were subjected to anti-seepage comparison test, and the specific test process is as follows:
[0053] Use a rubber tube to connect the propulsion pump and the pressure gauge to form a static pressure stabilization system. Use a suture needle 14 with a suture thread to penetrate the 3mm EVA foam, and leave the suture thread 1cm above and below the needle insertion point. Then use 502 glue to stick the test part in the middle of the rubber tube. The test part and the pressure gauge are on the same horizontal plane.
[0054] In addition, to simulate the extreme clinical situation, the test set the pressure value to 120mmHg, used purified water, and recorded the leakage of the test site every minute. Ten sutures of each type were taken and the average value was recorded. The final test results are shown in Table 2:
[0055] Table 2
[0056] sample Wire diameter specification Average wire diameter Needle and thread ratio Leakage rate ml / min Example 3-0 0.296mm 1.03 0.0023 Prolene 3-0 3-0 0.247mm 1.71 8.7024
[0057] It can be seen from Table 2 that the leakage rate of the suturing device of the present invention is greatly reduced when in use.
[0058] The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A suture, characterized in that: The suture thread is a single-strand thread, comprising a connecting body (2) and a suture body (1), wherein the connecting body (2) is used to be connected to a suture needle, and the suture body (1) is used for surgical suture; At least one end of the suturing body (1) is connected to the connecting body (2), and the width of the connecting body (2) is smaller than the width of the suturing body (1); for the connecting end of the connecting body (2) and the suturing body (1), the end surface of the connecting body (2) is in full contact with the end surface of the suturing body (1).
2. A suture according to claim 1, characterized in that: When the suture line is in a straightened state, the center line of the connecting body (2) and the center line of the suture body (1) are located on the same straight line, or on different straight lines.
3. A suture according to claim 1, characterized in that: The length of the connecting body (2) is between 0.5 mm and 3 mm, the line distance of the connecting body (2) is between 0.045 mm and 0.7 mm; the length of the suture line is between 10 cm and 5.5 m.
4. A suture according to claim 1, characterized in that: The connecting body (2) is generally in a right-angled trapezoidal or rectangular shape when viewed along the Z-axis direction of the suturing body (1), and is generally in a circular shape when viewed along the Y-axis direction of the suturing body (1).
5. A suture according to claim 4, characterized in that: The suture body (1) is cylindrical.
6. A suture according to claim 4, characterized in that: The angle between the end surface of the connecting body (2) at one end facing away from the suturing body (1) and a plane parallel to the Y-axis of the suturing body (1) is greater than or equal to 0° and less than or equal to 45°.
7. A suture according to claim 1, characterized in that: The connecting body (2) is connected to the suturing body (1) via a transition body (13); the angle between the connecting body (2) and the transition body (13) is greater than 90° and less than 180°.
8. A suture according to claim 1, characterized in that: In the X-axis view of the suture body (1), the distance between the top of the suture body (1) and the top of the connecting body (2) and the distance between the bottom of the connecting body (2) and the bottom of the suture body (1) are both greater than 0 mm and less than or equal to 0.4 mm.
9. A suture according to claim 8, characterized in that: The distance between the top surface of the suturing body (1) and the top surface of the connecting body (2) is the same as the distance between the bottom surface of the connecting body (2) and the bottom surface of the suturing body (2).
10. A suturing device, characterized in that: A suture thread comprising any one of claims 1 to 9, and also comprising a suture needle, wherein one end of the suture needle is provided with a needle hole (12) inwardly, the connecting body (2) of the suture thread is fixed in the needle hole (12), and the ratio of the outer diameter (10) of the suture needle to the width of the suture body (1) is between 0.85 and 1.2.