Scalpel

Abstract

The utility model provides a scalpel which comprises a scalpel body, the scalpel body is used for penetrating into eye soft tissue, and the scalpel is characterized in that the scalpel body comprises a first thickness part and a second thickness part, and the thickness of the first thickness part is different from that of the second thickness part. By the adoption of the structure, at least two thicknesses are formed, so that the strength of the scalpel body can be improved through the thick part, fracture or deformation during an operation is avoided, the size of a surgical incision is reduced through the thin part, small puncture resistance is kept in the puncture process of the surgical scalpel, and a cut wound with high self-closing performance is formed; wound healing is facilitated, and postoperative complications of patients are reduced. Therefore, by the adoption of the structure of the implementation mode, the risks of fracture and deformation of the scalpel can be reduced, and postoperative complications of a patient can be reduced.

Description

Technical Field

[0001] This utility model relates to a surgical knife, for example, that can be used to cut open soft tissues such as the cornea. Background Technology

[0002] Figures 6a-6b A scalpel tip is shown, comprising a mounting portion 101 and a blade 103. The mounting portion 101 is for mounting on a handle (not shown). The blade 103 is triangular in shape when viewed perpendicular to its thickness and has two cutting edges after the tip. (See reference...) Figure 6b The blade 103 is plate-shaped with uniform thickness. Figures 7a-7c Another type of scalpel is shown in the image, along with... Figures 6a-6b The difference is, Figures 7a-7c The scalpel in the text has only a single-sided blade. Figures 8a-8d Another type of scalpel is shown, the blade of which is configured to include an arc-shaped blade at the top and straight blades extending rearward (towards the base) from both sides of the blade.

[0003] These scalpels are used for soft tissue cutting in eye surgery, aiming for very small incisions, generally 1.5-3.2 mm wide, to facilitate wound healing and reduce postoperative complications. A crucial factor in achieving a small incision is the thickness of the scalpel blade. If the blade is too thick, it increases penetration resistance, raising the risk of microscopic tearing; furthermore, a thicker blade itself results in a larger incision with poorer self-closure, affecting postoperative healing and increasing the risk of complications. Here, the blade refers to the portion of the scalpel that penetrates the soft tissue.

[0004] Surgical scalpels are generally made of stainless steel, such as 30Cr13, 40Cr13, 32Cr13Mo, 108Cr17, and some special grades of stainless steel. The thickness of the blade is generally 0.1-0.22mm. If the thickness is too small, the blade is prone to breakage or deformation due to the poor toughness of the material, especially at the tip. Furthermore, these problems are not limited to ophthalmic surgery; they also apply to other surgical procedures.

[0005] In summary, there is an urgent need in this field for a scalpel that can reduce the size of the surgical incision without increasing the risk of blade breakage or deformation, thereby maintaining low puncture resistance during the scalpel's penetration process, forming an incision with high self-closing properties, which is conducive to wound healing and reduces postoperative complications for patients. Utility Model Content

[0006] In view of this, the present invention provides a scalpel that can reduce the risk of scalpel breakage and deformation, and also reduce postoperative complications for patients.

[0007] To achieve the above objectives, this utility model provides a scalpel, including a blade for inserting into the soft tissue of the eye. The blade is characterized in that it includes a first thickness portion and a second thickness portion, wherein the first thickness portion and the second thickness portion have different thicknesses.

[0008] By employing the above structure and creating at least two thicknesses, the thicker portion increases the strength of the blade, preventing breakage or deformation during surgery, while the thinner portion reduces the size of the surgical incision. This minimizes puncture resistance during the procedure, resulting in a highly self-closing incision that promotes wound healing and reduces postoperative complications. Therefore, this structure reduces both the risk of blade breakage and deformation, and the likelihood of postoperative complications.

[0009] As one possible approach, the first thickness portion and the second thickness portion are arranged along the tip-to-base direction of the blade.

[0010] As one possible approach, the first thickness portion is located further to the top than the second thickness portion, and the thickness of the first thickness portion is greater than that of the second thickness portion.

[0011] By using the above method, the blade becomes thicker from front to back, which can strengthen the front end that is most stressed and prevent breakage or deformation.

[0012] As one possible approach, the blade may further include a third thickness portion, the thickness of which differs from that of the first and second thickness portions, wherein the first, second, and third thickness portions are arranged sequentially from the top end side to the base end side of the blade.

[0013] As one possible approach, the thicknesses of the first thickness portion, the second thickness portion, and the third thickness portion decrease sequentially.

[0014] As one possible approach, the blade may further include a fourth thickness portion, the thickness of which differs from that of the first and second thickness portions, and the fourth thickness portion is arranged in a direction that intersects the top-to-base direction of the blade.

[0015] As one possible approach, the first thickness portion is adjacent to the blade tip portion, and the thickness of the fourth thickness portion is less than that of the first thickness portion or the second thickness portion.

[0016] Using the above method, the wider part behind the blade is made thinner, which can more effectively prevent the surgical incision from being too large.

[0017] As one possible approach, the first thickness portion and the second thickness portion are arranged along a direction that intersects the tip-base direction of the blade.

[0018] As one possible approach, the first thickness portion and the second thickness portion are connected by an inclined plane or an arc surface.

[0019] As one possible approach, let the thickness of the first thickness portion be m, and the thickness of the second thickness portion be n, where n = 0.8m.

[0020] As one possible approach, the thickness of the blade is 0.1mm-0.18mm or 0.1mm-0.12mm.

[0021] As one possible approach, the blade includes a cutting edge, the cutting edge of which is straight, curved, or a combination of both.

[0022] As one possible approach, the cutting edge includes a tip and one or two side cutting edges, the tip being sharp in shape, and the side cutting edges extending from the tip toward the base.

[0023] As one possible approach, the cutting edge includes a first cutting edge with an arc-shaped cutting line located on the tip side and a second cutting edge with a straight cutting line located on the base side.

[0024] As one possible embodiment, the scalpel includes a blade head, which includes a blade body and a mounting portion for mounting on a handle.

[0025] As one possible approach, the blade is bent relative to the mounting portion.

[0026] As one possible approach, the first thickness portion and the second thickness portion have two surfaces perpendicular to the thickness direction.

[0027] As one possible approach, the blade is made of stainless steel.

[0028] As one possible approach, the first thicker portion is adjacent to the cutting tip. This structure can specifically strengthen the weaker cutting tip, preventing it from breaking or deforming.

[0029] As one possible approach, the blade is plate-shaped, and the greater of the first and second thickness portions is formed by providing raised portions on one or both of its surfaces.

[0030] As one possible approach, the first thickness portion and the second thickness portion are respectively adjacent to a cutting edge portion. Attached Figure Description

[0031] Figure 1a This is a front view of the blade of the scalpel according to the first embodiment of this utility model;

[0032] Figure 1b yes Figure 1a Side view of the blade tip;

[0033] Figure 1c It is along Figure 1a Sectional view of line AA in the middle;

[0034] Figure 1d yes Figure 1a Enlarged view at point D;

[0035] Figure 1e yes Figure 1b Enlarged view of point C in the middle;

[0036] Figure 2a This is a front view of the blade head of the scalpel according to the second embodiment;

[0037] Figure 2b yes Figure 2a Enlarged view at point D;

[0038] Figure 2c It is along Figure 2a Sectional view of the middle EE line;

[0039] Figure 2d yes Figure 2a Side view of the cutter head shown;

[0040] Figure 2e yes Figure 2d Enlarged view of point C in the middle;

[0041] Figure 3a This is a front view of the scalpel according to the third embodiment;

[0042] Figure 3b yes Figure 3a Side view of the scalpel shown;

[0043] Figure 4a This is a front view of the blade of the scalpel according to the fourth embodiment;

[0044] Figure 4b yes Figure 4a Side view of the blade tip;

[0045] Figure 4c yes Figure 4a Enlarged view at point D;

[0046] Figure 4d yes Figure 4b Enlarged view of point C in the middle;

[0047] Figure 4e It is along Figure 4a Sectional view of the middle EE line;

[0048] Figure 5a This is a front view of the blade of the scalpel according to the fifth embodiment;

[0049] Figure 5b yes Figure 5a Side view of the blade tip;

[0050] Figure 5c It is along Figure 5a Sectional view of line AA in the middle;

[0051] Figure 5d yes Figure 5a Enlarged view at point D;

[0052] Figure 5e yes Figure 5b Enlarged view of point C in the middle;

[0053] Figure 6a This is a front view of the blade of a surgical scalpel in the prior art;

[0054] Figure 6b yes Figure 6a A side view of the cutting head;

[0055] Figure 7a This is a front view of the blade head of another type of scalpel in the prior art;

[0056] Figure 7b yes Figure 7a A side view of the cutting head;

[0057] Figure 7c yes Figure 7a Cross-sectional view at point C;

[0058] Figure 8a This is a front view of the blade of another type of scalpel in the prior art;

[0059] Figure 8b yes Figure 8a A side view of the cutting head;

[0060] Figure 8c It is along Figure 8a A cross-sectional view of the EE line in the diagram;

[0061] Figure 8d yes Figure 8a A perspective view of the blade tip. Detailed Implementation

[0062] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0063] Figure 1aThis is a front view of the blade of the scalpel according to the first embodiment of this utility model; Figure 1b yes Figure 1a Side view of the blade tip; Figure 1c It is along Figure 1a Sectional view of line AA in the middle; Figure 1d yes Figure 1a Enlarged view at point D; Figure 1e yes Figure 1b A magnified view of point C in the middle.

[0064] like Figures 1a-1e As shown, the scalpel has a blade head 200, which has a mounting portion 201 and a blade body 203. The mounting portion 201 has a generally long rod-shaped main body located at the base end (or rear end, lower end in FIG. 1) and a connecting portion located at the top end (or front end, upper end in FIG. 1) whose shape transitions from rod-shaped to flat, and this connecting portion connects to the blade head 200. In use, the blade head 200 can be mounted on a handle (not shown) for the operator to grip via the mounting portion 201, facilitating operation. As another embodiment, the handle can also be integrally formed on the blade head 200.

[0065] In this embodiment, the cutter head 200 is a single-piece structure, meaning the mounting part 201 and the cutter body 203 are integrally formed. However, in other embodiments, they can be formed separately and then assembled together. Furthermore, the cutter head 200 is made of stainless steel (e.g., 30Cr13, 40Cr13, 32Cr13Mo, 108Cr17). However, in other embodiments, other materials can be used.

[0066] Additionally, in this instruction manual, the term "blade" refers to the portion that penetrates soft tissue (such as the cornea) during surgery, typically the part with a cutting edge. As an example, the blade thickness can be 0.1mm-0.18mm or 0.1mm-0.12mm.

[0067] like Figure 1d As shown, the blade 203 has a cutting edge 231, which includes a blade tip 220. In this embodiment, the cutting edge 231 is pointed and has two side blades (two side blades) extending from the blade tip 220 towards the base end, with a straight cutting line. In other embodiments, the cutting line may also be curved.

[0068] like Figure 1a , Figure 1d , Figure 1eAs shown, the blade 203 is plate-shaped or sheet-shaped and has at least two thicknesses. Specifically, the blade 203 has a first thickness portion 208 located on the front side adjacent to the blade tip 220 and a second thickness portion 204 located on the rear side. The two thicknesses are different, with the thickness 210 of the first thickness portion 208 being greater than the thickness 212 of the second thickness portion 204.

[0069] By forming at least two thicknesses, the thicker portion can increase the strength of the blade 203, preventing breakage or deformation during surgery, while the thinner portion reduces the size of the surgical incision, resulting in low puncture resistance during the scalpel's penetration and creating an incision with high self-closing properties, which is beneficial for wound healing and reduces postoperative complications. Therefore, the structure of this embodiment can reduce both the risk of scalpel breakage and deformation and postoperative complications. In this invention, the ratio between the two thicknesses can be, for example, 0.8.

[0070] Furthermore, in this embodiment, a transition connection 206 is provided between the first thickness portion 208 and the second thickness portion 206, and the transition connection 206 has a beveled surface 213. Figure 1e A transition is formed between the first thickness portion 208 and the second thickness portion 206. This surface 213 is planar, but in other embodiments, it can also be curved (e.g., an arc surface). Alternatively, the transition connection portion 206 can be omitted, and the first thickness portion 208 and the second thickness portion 206 can be connected by a vertical stepped surface.

[0071] Furthermore, in this embodiment, of the upper and lower surfaces of the blade 203, the lower surface ( Figure 1e The surface on the left side is generally flat, while the upper surface has a raised portion (raised portion), thus forming a first thickness portion 208 with a relatively large thickness. As another embodiment, the raised portion may also be formed on the lower surface or on both the upper and lower surfaces, thereby forming a portion with a relatively large thickness.

[0072] In addition, in this embodiment, the first thickness portion 208 and the second thickness portion 206 have two surfaces perpendicular to the thickness direction (vertical direction). However, the present invention is not limited to this and may also have inclined surfaces or curved surfaces.

[0073] Figure 2a This is a front view of the blade head of the scalpel according to the second embodiment; Figure 2b yes Figure 2a Enlarged view at point D; Figure 2c It is along Figure 2a Sectional view of the middle EE line; Figure 2d yes Figure 2a Side view of the cutter head shown; Figure 2e yes Figure 2dA magnified view of point C in the middle.

[0074] In the above embodiment, the parts with different blade thicknesses are arranged in the front-back direction. In this embodiment, the parts with different blade thicknesses are arranged in the left-right direction (that is, the direction that intersects with the front-back direction or the top-to-base direction).

[0075] Reference Figures 2a-2e The cutting head has a mounting portion 501 and a cutting body 505. The cutting body 505 has a first thickness portion 503 and second thickness portions 502 and 504. The first thickness portion 503 is located directly behind the cutting tip 502, and the second thickness portions 502 and 504 are located on the left and right sides of the first thickness portion 503, respectively. See also Figure 2e The thickness 510 of the first thickness portion 503 is greater than the thickness 511 of the second thickness portions 502 and 504.

[0076] As another implementation, the thickness of the portions of the blade 505 located on the left and right sides of the first thickness portion 503 can be different, thereby creating three thickness portions.

[0077] See Figure 2b , Figure 2c The first thickness portion 503 and the second thickness portions 502 and 504 are connected and transitioned by an arc surface 532.

[0078] Additionally, 531 in the figure refers to the cutting edge, which has the same structure as the cutting edge in the above embodiment, and detailed description is omitted here.

[0079] In this embodiment, similar to the embodiments described above, the blade has sections of varying thickness. The thicker sections increase the blade's strength, preventing breakage or deformation during surgery, while the thinner sections reduce the size of the surgical incision. This results in lower puncture resistance during the procedure, creating a highly self-closing incision that promotes wound healing and reduces postoperative complications. Therefore, the structure of this embodiment reduces both the risk of blade breakage and deformation, and the risk of postoperative complications.

[0080] Figure 3a This is a front view of the scalpel according to the third embodiment; Figure 3b yes Figure 3a The image shows a side view of the scalpel.

[0081] The main difference between this embodiment and the first embodiment is that the blade 403 of the cutter head 402 is bent relative to the mounting portion 404; in this embodiment, the bending occurs in the thickness direction. The other structures are the same as in the first embodiment, and detailed descriptions are omitted here.

[0082] in addition, Figure 3a , Figure 3bThe image also shows a handle 401. In use, the blade 402 is mounted on the handle 401 via a mounting part 404 to facilitate operation by the operator.

[0083] Figure 4a This is a front view of the blade of the scalpel according to the fourth embodiment; Figure 4b yes Figure 4a Side view of the blade tip; Figure 4c yes Figure 4a Enlarged view at point D; Figure 4d yes Figure 4b Enlarged view of point C in the middle; Figure 4e It is along Figure 4a A cross-sectional view of the EE line.

[0084] The fourth embodiment can be seen as a combination of the first and second embodiments. Specifically, in the first embodiment, multiple portions of different thicknesses are formed in the front-back direction; in the second embodiment, multiple portions of different thicknesses are formed in the left-right direction; and in this embodiment, the multiple portions of different thicknesses are arranged not only along the front-back direction but also along the left-right direction. That is, the arrangement direction of the multiple thickness portions in this invention is not limited. This embodiment will be briefly described below, while parts identical to those in the above embodiments will be omitted.

[0085] See Figures 4a-4e The blade has a mounting portion 701 and a blade body 702. The blade body 702 has a first thickness portion 703, a second thickness portion 704, and a third thickness portion 705 with progressively decreasing thicknesses, each of which is adjacent to a cutting edge. The first thickness portion 703 is located at the foremost point, adjacent to the blade tip; the second thickness portion 704 is located behind the first thickness portion 703; and the third thickness portion 705 is located on the left and right sides of the second thickness portion 704. The first thickness portion 703 and the second thickness portion 704, as well as the second thickness portion 704 and the third thickness portion 705, can be connected by a curved transition surface.

[0086] Using this implementation method, the same effect as the above implementation method can be obtained, and it will not be described again here.

[0087] Additionally, it may be necessary to clarify that the prefixes "first," "second," and "third" in the first thickness portion, second thickness portion, and third thickness portion in this application are merely for ease of explanation and have no structural limiting meaning. They do not imply that the numbering order in a certain embodiment is consistent with the numbering order used in other embodiments or the invention content of this utility model. For example, there is no necessary or unique correspondence between the third thickness portion in a specific embodiment and the third thickness portion in the invention content.

[0088] Figure 5a This is a front view of the blade of the scalpel according to the fifth embodiment; Figure 5b yes Figure 5a Side view of the blade tip; Figure 5c It is along Figure 5a Sectional view of line AA in the middle; Figure 5d yes Figure 5a Enlarged view at point D; Figure 5e yes Figure 5b A magnified view of point C in the middle.

[0089] The main difference between this embodiment and the first embodiment is that in the first embodiment, two thickness portions are formed in the front-to-back direction, while in this embodiment, three thickness portions are formed in the front-to-back direction. Other structures are basically the same, and detailed descriptions are omitted here.

[0090] Reference Figures 5a-5e The cutting head has a mounting portion 604 and a cutting body 605. The cutting body 605 has, from front to back, a first thickness portion 606, a second thickness portion 607, and a third thickness portion 608. The thickness 601 of the first thickness portion 606 is greater than the thickness 602 of the second thickness portion 607, and the thickness 602 of the second thickness portion 607 is greater than the thickness 603 of the third thickness portion 608. Furthermore, Figure 5d The number 609 indicates the cutting edge.

[0091] Using this implementation method, the same effect as the above implementation method can be obtained, and it will not be described again here.

[0092] The blade shape and other features described in the above embodiments are merely illustrative, and this utility model is not limited thereto. For example, it can also be applied to... Figures 7a-7c or Figures 8a-8d The blade shape shown in the figure can be arranged in a front-to-back direction, a left-to-right direction, or a combination of both directions. Figures 7a-7c It has only one side blade. Figures 8a-8d In the middle, the cutting edge includes a cutting edge with an arc-shaped cutting line located on the top end side and a cutting edge with a straight cutting line located on the base end side.

[0093] Furthermore, while the above embodiments used an ophthalmic scalpel as an example, it is self-evident that this invention can also be applied to other scalpels.

[0094] The term "comprising" as used throughout this application should not be construed as limiting itself to the contents listed below; it does not exclude other structural elements or steps. Therefore, it should be interpreted as specifying the presence of the mentioned technical features, integrals, steps, or components, but does not exclude the presence or addition of one or more other technical features, integrals, steps, or components and groups thereof.

[0095] It is understood that those skilled in the art can combine the features mentioned in one or more embodiments throughout this application with features from other embodiments in any appropriate manner to implement this application.

[0096] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the technical concept of this application, all of which fall within the scope of protection of this application.

Claims

1. A surgical knife comprising a blade for penetration into soft tissue of an eye, characterized in that, The blade body includes a first thickness portion and a second thickness portion, the first thickness portion and the second thickness portion are different in thickness, The first thickness portion and the second thickness portion are arranged along the top-end-base-end direction of the blade body, The first thickness portion is closer to the top end side than the second thickness portion, and the thickness of the first thickness portion is greater than that of the second thickness portion.

2. The scalpel of claim 1, wherein, The blade body further includes a third thickness portion, the third thickness portion is different in thickness from the first thickness portion and the second thickness portion, The first thickness portion, the second thickness portion and the third thickness portion are arranged in sequence from the top end side to the base end side of the blade body.

3. The scalpel of claim 2, wherein, The thickness of the first thickness portion, the second thickness portion and the third thickness portion decreases in sequence.

4. The scalpel of claim 1, wherein, The blade body further includes a fourth thickness portion, the fourth thickness portion is different in thickness from the first thickness portion and the second thickness portion, The fourth thickness portion and the first thickness portion or the second thickness portion are arranged along a direction intersecting the top-end-base-end direction of the blade body.

5. The scalpel of claim 4, wherein, The first thickness portion is adjacent to the tip portion, and the thickness of the fourth thickness portion is less than that of the first thickness portion or the second thickness portion.

6. A surgical knife comprising a blade for penetration into soft tissue of an eye, characterized in that The blade body includes a first thickness portion and a second thickness portion, the first thickness portion and the second thickness portion are arranged along the top-end-base-end direction of the blade body, 7. The scalpel of any one of claims 1-6, wherein, The first thickness portion and the second thickness portion are connected by an inclined plane or an arc surface.

8. The scalpel according to any one of claims 1-6, wherein, Suppose the thickness of the first thickness portion is m, and the thickness of the second thickness portion is n, n=0.8m.

9. The scalpel of any one of claims 1-6, wherein, The thickness of the blade body is 0.1mm-0.18mm or 0.1mm-0.12mm.

10. The scalpel of any one of claims 1-6, wherein, The blade body includes a blade portion, the blade line of the blade portion is in a straight line shape or an arc line shape or a combination of the two.

11. The scalpel of claim 10, wherein, The blade portion includes a tip portion and one or two side blade portions, the tip portion is in a sharp shape, and the side blade portion extends from the tip to the base end side.

12. The scalpel of claim 11, wherein, The blade portion includes a first blade portion with an arc line-shaped blade line on the top end side and a second blade portion with a straight line-shaped blade line on the base end side.

13. The scalpel of any one of claims 1-6, wherein, The surgical knife includes a knife head, the knife head includes a blade body and a mounting portion, and the mounting portion is used for mounting on a knife handle.

14. The scalpel of claim 13, wherein, The blade body is bent relative to the mounting portion.

15. The scalpel of any one of claims 1-6, wherein, The first thickness portion and the second thickness portion have two surfaces perpendicular to the thickness direction.

16. The scalpel of any one of claims 1-6, wherein, The blade body is made of stainless steel.

17. The scalpel of any one of claims 1-6, wherein, The first thickness portion is adjacent to the tip.

18. The scalpel of any one of claims 1-6, wherein, The blade body is in a plate shape, and the first thickness portion is formed by providing a raised portion on one or both surfaces thereof.

19. The scalpel of any one of claims 1-6, wherein, The first thickness portion and the second thickness portion are respectively adjacent to a blade portion.

20. The scalpel of any one of claims 1-6, wherein, It is an ophthalmic surgical knife.

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