Suture cutting tool

Abstract

To provide a suture cutting tool easy to use in a diagnosis and a round of visits.SOLUTION: A suture cutting tool 1 comprises: a holding part 10 which is formed of a plate-shaped member and held with fingers; and a hook-shaped cutting part 20 extending from the holding part 10. The cutting part 20 has a blade 22 inside its hook shape and the width of the cutting part 20 is equal to or less than that of the holding part 10. Because the blade 22 is provided inside the hook-shape of the cutting part 20, the suture cutting tool 1 allows safe and precise manipulation and is easy to use in a diagnosis and a round of visits.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a suture cutting instrument, and more particularly to a suture cutting instrument that can be easily used in examinations and follow-up consultations.

Background Art

[0002] Conventionally, instruments for cutting sutures have been developed. For example, there are the surgical suture scissors of Patent Document 1 and the medical suture removal forceps of Patent Document 2. There is also Patent Document 3 as an instrument for cutting sutures in the oral cavity.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the medical field, there is a need to easily cut sutures during examinations and follow-up consultations, such as when removing a tube fixed by suturing to the patient's body or when removing sutures from a sutured wound.

[0005] However, scissors such as those in Patent Document 1 and Patent Document 2 are expensive and limited in the number that can be kept in a medical institution, and are strictly managed to prevent loss, so it is difficult to use them easily during examinations, follow-up consultations, etc.

[0006] In addition, since the blade of the suture cutting instrument of Patent Document 3 is provided on the outer shape, there is a risk that a user such as a doctor may be injured during handling, and it is difficult to carry it around during follow-up consultations, etc.

[0007] This invention has been made in view of the above circumstances, and aims to provide a suture cutting device that can be easily used during medical examinations and rounds. [Means for solving the problem]

[0008] To achieve the above objective, the suture cutting device according to the present invention is Formed from a plate-like member, A holding part that is held with the fingers, It comprises a hook-shaped cutting portion extending from the aforementioned holding portion, The aforementioned retaining part is The ring portion into which the fingers are inserted, It has a finger rest portion that protrudes from the holding portion so as to extend upward from the center of the ring portion at a predetermined angle from the cutting direction in which the cut portion is pulled when the suture is cut, in order to allow the fingers to be placed on it. The cutting portion has a blade on the inside of the hook shape, The width of the cutting portion is less than or equal to the width of the holding portion. the law of nature, The rising portion above the cut end from the ring section is curved to conform to the shape of the fingers.

[0009] Furthermore, the width of the cut portion is, The size gradually decreases from the side of the holding portion toward the tip. It would be acceptable to do so.

[0010] Furthermore, the cut portion is A blade is formed in the innermost part of the hook-shaped section. The hook-shaped tip does not have a blade. It would be acceptable to do so. [Effects of the Invention]

[0011] The suture cutting device of the present invention comprises a holding part for holding with the fingers and a hook-shaped cutting part with a width less than or equal to the width of the holding part, and has a blade on the inside of the hook shape of the cutting part, allowing for safe and precise operation, and can be easily used during examinations and rounds. [Brief explanation of the drawing]

[0012] [Figure 1]It is a perspective view of a suture cutting instrument according to an embodiment of the present invention. [Figure 2] It is a diagram showing the configuration of a suture cutting instrument according to an embodiment, (A) is a front view, and (B) is a side view. [Figure 3] (A) is a diagram showing an example of the cross-sectional shape of the blade portion, and (B) is a diagram showing another example of the cross-sectional shape of the blade portion. [Figure 4] It is a diagram showing the usage state of a suture cutting instrument according to an embodiment, (A) is a view of an example of the usage state seen from above, and (B) is a view of an example of a usage state different from (A) seen from the side. [Figure 5] It is a front view of a suture cutting instrument according to a modified example.

Mode for Carrying Out the Invention

[0013] Hereinafter, the suture cutting instrument 1 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the suture cutting instrument | 1. Further, FIGS. 2(A) and (B) are a front view and a side view of the suture cutting instrument 1.

[0014] In the drawings for explaining each part of the suture cutting instrument 1, the left direction in the front view of the suture cutting instrument 1 shown in FIG. 2(A) is taken as the front, the right direction as the rear, the upper direction as the upper, and the lower direction as the lower, and reference is made as appropriate.

[0015] The suture cutting instrument 1 is made by processing a plate-like member with a thickness of 1 mm made of four types of pure titanium. Pure titanium is lightweight and hard, and is excellent in rust prevention and metal allergy prevention, so it is a material widely used for medical purposes. Among pure titaniums, four types of pure titanium are harder. As shown in FIG. 1, the suture cutting instrument 1 includes a holding portion 10 held by a finger, more specifically, a fingertip, and a hook-shaped cutting portion 20 extending from the holding portion 10.

[0016] The holding portion 10 is the part in which a user, such as a doctor, holds the suture cutting instrument 1 with their fingers. It comprises a ring portion 11 formed in a ring shape by having through holes formed on the main surface so that fingers can be inserted, and a finger rest portion 12 protruding from the holding portion 10 for placing fingers on.

[0017] As shown in Figure 2(A), the ring portion 11 is ring-shaped with an outer diameter Do and an inner diameter Di. The sizes of the outer diameter Do and inner diameter Di are not particularly limited and should be set considering ease of insertion of fingers, ease of holding and operating the suture cutting instrument 1, etc. In this embodiment, the outer diameter Do = 28 mm and the inner diameter Di = 20 mm.

[0018] The formation of the ring portion 11 on the holding portion 10 allows fingers, such as the middle finger, to be inserted into the ring portion 11, making it easier to hold the suture cutting instrument 1 formed from a plate-like member. Furthermore, by inserting fingers into the ring portion 11, the suture cutting instrument 1 is less likely to fall or get lost. Moreover, when cutting sutures using the suture cutting instrument 1, placing fingers on the ring portion 11 prevents the suture cutting instrument 1 from slipping, making it easier to perform the pulling motion involved in cutting the sutures.

[0019] The finger rest 12 is the part on which the user places their fingers, for example, their ring finger, when holding the suture cutting instrument 1. The finger rest 12 protrudes from the rearward side of the ring portion 11 of the holding portion 10. More specifically, as shown in Figure 2(A), the finger rest 12 extends upward from the center of the ring portion 11 at a predetermined angle θ from the cutting direction in which the cutting portion 20 is pulled when cutting sutures, and is provided protruding from the inside of the ring portion 11 with a length Lf. The size of the predetermined angle θ and length Lf are not particularly limited and should be set considering the ease of holding and operating the suture cutting instrument 1. In this embodiment, the angle θ = 45° and the length Lf = 13 mm. When the user inserts their fingers into the ring portion 11 and holds the suture cutting instrument 1, placing their fingers on the finger rest 12 can suppress rotational wobble around the ring portion 11. Therefore, the user can easily perform precise work.

[0020] As shown in Figure 2(A), the cutting portion 20 is hook-shaped and extends from the ring portion 11 in the opposite direction to the cutting direction. In other words, the cutting portion 20 is formed on the front side of the suture cutting instrument 1 opposite the finger rest portion 12 via the ring portion 11. The width of the hook-shaped cutting portion 20 is less than or equal to the width of the holding portion 10 (outer diameter Do of the ring portion 11), and it is formed so that the hook-shaped cutting portion 20 protrudes from the ring portion 11. The rising portion above the cutting portion 20 from the ring portion 11 (hereinafter referred to as the rising portion 21) is curved to follow the shape of the finger, for example, the distal phalanx of the index finger. By making the rising portion 21 curved in this way, the tip of the index finger can be placed stably. This makes it easier to apply subtle force with the index finger, and allows for precise operation of the suture cutting instrument 1.

[0021] Furthermore, the cutting section 20 gradually narrows in width from the side of the holding section 10 towards the tip (W1 > W2 in Figure 2(A)). This reduction in width of the cutting section 20 towards the tip makes the tip side easier to see, thus facilitating precise cutting operations. The length Lc of the cutting section 20 is not particularly limited and should be set considering the ease of holding and operating the suture cutting instrument 1. In this embodiment, the length Lc of the cutting section 20, including the length from the inside of the ring section 11, is 29 mm.

[0022] The cutting section 20 has an arc-shaped blade portion 22 integrally formed in the innermost part of the hook-shaped section, also known as the throat. By forming the blade portion 22 from a single plate-like member in this way, the suture cutting device 1 can be manufactured inexpensively. The blade portion 22 integrally formed on the suture cutting device 1 can be formed from a plate material by wire cutting, punching, or the like.

[0023] Figures 3(A) and 3(B) show the cross-sectional shape of the blade portion 22. The shape of the blade surface of the blade portion 22 is not particularly limited and can be appropriately selected, such as the straight shape shown in Figure 3(A) or the arc shape shown in Figure 3(B). The blade portion 22 according to this embodiment has an arc-shaped blade surface, as shown in Figure 3(B). More specifically, the blade portion 22 is formed into a concave shape by machining it into a spherical shape using a method such as counterboring. In this embodiment, the thickness of the suture cutting instrument 1 is 1 mm, and the radius of the arc-shaped blade portion 22 is 2.5 mm. This makes the cutting edge thinner, thereby improving the sharpness of the blade portion 22. The sharpness of the blade portion 22 may also be improved by acid treatment.

[0024] Furthermore, although the blade portion 22 is formed as an integral part in this embodiment, the blade portion 22 can also be formed as a separate part.

[0025] The following describes a method for cutting sutures using the suture cutting device 1 of this embodiment, with reference to the figures. Figure 4(A) is a view from above of one example of the device in use, and Figure 4(B) is a view from the side of another example of the device in use.

[0026] As shown in Figure 4(A), in this example of use, the suture cutting device 1 is held by inserting the middle finger into the ring portion 11 and gripping the cutting portion 20 and the ring portion 11 between the thumb and index finger. Generally, if the suture cutting device 1 is made into a thin plate shape, it becomes difficult for the user to hold. However, in this embodiment, the suture cutting device 1 is held by inserting the middle finger into the ring portion 11 and gripping the cutting portion 20 and the ring portion 11 between the thumb and index finger, so that the wobble in the thickness direction of the suture cutting device 1 is suppressed and it can be held stably.

[0027] Furthermore, as shown in Figure 4(A), when the user holds the suture cutting instrument 1, the index finger comes into contact with the cutting section 20, allowing for stable and precise operation of the cutting section 20. In this example of use, the side of the ring finger comes into contact with the finger rest 12, which suppresses rotational wobble of the suture cutting instrument 1 and allows for stable holding. More specifically, the rotation of the suture cutting instrument 1 is performed by the index finger, which comes into contact with the cutting section 20 on the front side of the instrument, and the ring finger, which comes into contact with the finger rest 12, with the ring section 11 into which the middle finger is inserted as the center. This allows for precise operation, such as hooking the suture thread onto the hook-shaped cutting section 20.

[0028] Furthermore, as shown in Figure 4(B), in this example of use, the middle finger is passed through the ring portion 11, and the suture cutting instrument 1 is held by gripping the ring portion 11 between the middle finger and the thumb. The index finger is in contact with the arc-shaped raised portion 21. Therefore, precise operation at the cutting portion 20 is made easier, and it is easier to apply force when cutting. Also, in this example of use, the side of the ring finger is in contact with the finger rest portion 12, so the rotational wobble of the suture cutting instrument 1 caused by the ring portion 11 can be suppressed, and it can be held stably.

[0029] As described above in the usage state, the suture cutting device 1, held in the fingers, specifically the fingertips, guides the suture from the hook tip of the cutting section 20 to the blade section 22, and performs a pulling motion by pulling the holding section 10 in the cutting direction, thereby cutting the suture with the blade section 22. Thus, in the suture cutting method according to this embodiment, the cutting operation is performed by a pulling motion of hooking and pulling the suture. Generally, when cutting with a pushing motion, the patient's body is in the direction of cutting, so there is a risk of injuring the patient if the motion goes too far. In contrast, the suture cutting device 1 according to this embodiment cuts the suture with a pulling motion, so it can cut more safely compared to cutting with a pushing motion.

[0030] The method of using the suture cutting device 1 shown in Figures 4(A) and (B) is merely one example, and it can be used in other ways. For example, it can be used by inserting the ring finger instead of the middle finger into the ring portion 11 and resting the little finger against the finger rest portion 12.

[0031] As described above, the cutting portion 20 of the suture cutting instrument 1 according to this embodiment is formed in a hook shape extending from the holding portion 10, and the blade portion 22 is formed on the inside of the hook shape. As a result, the blade portion 22 is not exposed on the outside, so the risk of injury when carrying the suture cutting instrument 1 can be reduced. Furthermore, the suture cutting instrument 1 is made of a plate-like member and is configured as a small instrument that can be held and operated with the fingertips. Therefore, it is easy to carry and can be easily used during examinations, rounds, etc.

[0032] Furthermore, the width of the cutting portion 20 is less than or equal to the width of the holding portion 10. This makes the tip of the cutting portion 20 easily visible, allowing for precise work such as hooking sutures onto the hook-shaped cutting portion 20. In addition, the width of the cutting portion 20 gradually decreases from the side of the holding portion 10 towards the tip. When performing fine work such as hooking sutures with the tip of the cutting portion 20, a thin and pointed tip is easier to see, allowing for more accurate work. Therefore, the suture cutting device 1 according to this embodiment allows for more precise work. However, if the cutting portion 20 is too long, precise operation becomes difficult, and conversely, if it is too short, the sutures and the blade portion 22 may be difficult to see due to the shadow of the fingers. Therefore, it is preferable that the length of the cutting portion 20, including the length from the inside of the ring portion 11 of the holding portion 10, be about 29 mm, as in this embodiment.

[0033] Furthermore, the holding part 10 of the suture cutting instrument 1 is equipped with a ring-shaped ring portion 11. Therefore, by inserting a finger into the ring portion 11, the pulling motion when cutting sutures can be easily performed. In addition, the risk of dropping or losing the instrument can be reduced. Moreover, other tasks, such as peeling off tape securing a drain or performing disinfection, can be performed while wearing the suture cutting instrument 1 on the finger.

[0034] Furthermore, in this embodiment, the blade portion 22 is formed in the inner, hook-shaped part. This allows the suture to be cut by a pulling motion of the suture cutting device 1. Specifically, when cutting the suture, the suture is hooked with the hook-shaped tip, the inside of the hook acts as a guide for the suture, and the suture is cut with the inner part of the hook. Therefore, compared to conventional cutting devices that cut with a pushing motion, the risk of injuring the patient can be reduced.

[0035] The material of the suture cutting device 1 according to this embodiment is pure titanium type 4, but it is not limited to this. For example, stainless steel can be used to provide a less expensive suture cutting device 1. Alternatively, the suture cutting device 1 can be made of resin to create a less expensive disposable product.

[0036] Furthermore, while the thickness of the plate-shaped member of the suture cutting device 1 according to this embodiment is set to approximately 1 mm from the viewpoint of portability and stability in use, it is not limited to this. The thickness can be set appropriately based on the strength of the material of the suture cutting device 1, portability, stability in use, etc.

[0037] Although the ring portion 11 is ring-shaped, the shape of the ring is not limited to that shown in the illustration. It may also have a shape with a part of it missing, or be elliptical rather than circular.

[0038] Furthermore, when holding the suture cutting instrument 1, it is not necessary to insert the finger into the ring portion 11 more than necessary. If the inner diameter Di of the ring portion 11 is too large for the inserted finger, the holding and operation of the suture cutting instrument 1 will become unstable. Therefore, the inner diameter Di of the ring portion 11 is preferably about 20 mm, which is the dimension of the first joint of the middle finger, as in this embodiment.

[0039] Furthermore, in this embodiment, the holding portion 10 is provided with a ring portion 11, but it is not limited to this. Also, in this embodiment, the width of the cutting portion 20 is smaller than the width of the holding portion 10, but it is not limited to this, and it may be the same as the width of the holding portion 10. For example, as in the suture cutting device 2 shown in Figure 5, the width of the holding portion 10 and the width of the cutting portion 20 may be formed to be the same size. This makes it possible to provide a suture cutting device with a simpler structure and lower cost.

[0040] Furthermore, the width of the cutting section 20 can be made narrower than the width of the holding section 10, and the shape of the holding section 10 can be made into a rectangular plate-like shape. This makes the tip of the cutting section 20 easier to see and allows for more precise operation. In addition, a simple structure can be provided, making the suture cutting device 1 inexpensive. However, if the holding section 10 is made into a rectangular plate shape, and the length of the holding section 10 becomes too long, the cutting section 20 may become difficult to see depending on the holding position, or the operation of the suture cutting device 1 may become unstable. Therefore, the overall length of the suture cutting device 1 is preferably about 50 to 70 mm. Even when the suture cutting device 1 is made into such a rectangular shape, a finger rest 12 may be provided. This improves the stability of operation of the suture cutting device 1.

[0041] The present invention is not limited to the embodiments described above, and the scope of the present invention is indicated by the claims. Embodiments obtained by various modifications made within the scope of the claims and the equivalent scope of the meaning of the invention are also included in the technical scope of the present invention. [Industrial applicability]

[0042] The present invention is suitable for cutting sutures. In particular, it is suitable as a cutting device for cutting sutures during medical examinations, ward rounds, etc. [Explanation of Symbols]

[0043] 1,2 Suture cutting device, 10 Holding part, 11 Ring part, 12 Finger rest part, 20 Cutting part, 21 Riser part, 22 Blade part

Claims

1. Formed from a plate-like member, A holding part that is held with the fingers, It comprises a hook-shaped cutting portion extending from the aforementioned holding portion, The aforementioned retaining part is The ring portion into which the fingers are inserted, It has a finger rest portion that protrudes from the holding portion so as to extend upward from the center of the ring portion at a predetermined angle from the cutting direction in which the cut portion is pulled when the suture is cut, in order to allow the fingers to be placed on it. The cutting portion has a blade on the inside of the hook shape, The width of the cutting portion is less than or equal to the width of the holding portion. The upper part of the cut section from the ring is curved to conform to the shape of the fingers. A suture cutting device characterized by the following features.

2. The width of the cut portion is, The size gradually decreases from the side of the holding portion toward the tip. The suture cutting device according to feature 1.

3. The cut portion is A blade is formed in the innermost part of the hook-shaped section. The hook-shaped tip does not have a blade. The suture cutting device according to claim 1 or 2.

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